Transformer A to Z Testing
Oil
Gas
Insulation
PD Test
Accuracy
Winding/ Re-Winding
(2008/2009) Item
Description
1
General Purpose Electrical Test Equipment for Transformers
1A
Multimeter type AVO310 with backlit LCD display, min/max store, analogue bar graph and standard accessories
1B
Multifunction Installation Tester type MFT1552 complete with standard accessories
1C
Power Clampmeter type VA6200 complete with Software
(2008/2009) Item
Description
1
General Purpose Electrical Test Equipment for Transformers
1A
Multimeter type AVO310 with backlit LCD display, min/max store, analogue bar graph and standard accessories
1B
Multifunction Installation Tester type MFT1552 complete with standard accessories
1C
Power Clampmeter type VA6200 complete with Software
(2008/2009) Item
Description
3D
Single-phase Hand-cranked Transformer Turns Ratio Test Set type 550005 complete with standard accessories
3E
Portable Digital Ratio meter type RTD/3
4 4A
Capacitance + Dissipation Factor (Tan Delta) Test Sets Tangent Delta / C+DF Test Set type Delta2000 complete with 12kV HV supply, all standard accessories, RS232 interface and software, hot collar straps and tap connectors, operation voltage 230V AC, 50Hz
(2008/2009) Item 7
Description Transformer Frequency Response Analyzer:
7A
Transformer Frequency Response Analyzer type FRAX101 complete with all standard accessories
7B
Insulation Diagnostic Analyzer (Capacitance and Dissipation Factor/Water content) for Power Transformers type IDEX300 with all standard accessories and software (AG-19090)
8
PD
Measurement
for
MV
and
HV.
(Applicable
to
latest
(2008/2009) Item 10 10A
11 11A
Description Transformer Oil Moisture Test Set Portable Moisture in Oil Test Set type KF-UNI complete with all standard accessories Transformer Oil Treatment Plant Transformer Oil treatment plant (3000L/H capacity) type THV3000 complete with standard accessories Note: Other Versions with different Capacities can be provided on
(2008/2009) Item
Description
12B
Dissolved Gas Analysis with Automatic Degassing unit According to IEC567 /ASTM 3612 type Top Toga GC.
13
Transformer Fault Indicator (Online Monitoring)
13A
Transformer monitoring unit type Hydrocal1002 complete with Hydrosoft software for data transfer and data administration
13B
Transformer monitoring unit type Hydrocal1003 as Hydrocal 1002 but with additional Water in oil/ moisture measurement.
1.General Purpose Electrical Test Equipment
Item 1A
AVO300 Digital Multimeter
AVO300 Digial Multimeter
DESCRIPTION
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Designed for Electricians
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Fully auto ranging
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Large display characters
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Separate battery and fuse cover
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Data hold
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Min/Max store
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IEC 61010 compliant
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Suitable for applications to CATIII 600 V
Large clear display
The LCD display has large high contrast 31/2 digit display
AVO300 Digital Multimeter Resistance, continuity and Diode testing
SPECIFICATIONS
Resistance can be measured directly on the ohms range from 0ohms up to 1.999Mohms. A continuity buzzer range is also available for checking low resistance between two points. The buzzer sounding if the resistance is less than 50ohms (35ohms on the AVO310).
Technical: Insulation: Class2, Double insulation.
Additionally a diode range exists for testing forward and reverse bias operation of transistors and diodes.
Overvoltage category: (AVO300/310) CATIII 600V / CATII1000V
Additional features
Display
A low battery indicator warns when batteries are low, and an auto-off function ensures no unnecessary battery wastage occurs if accidentally left on.
AVO300:
A built-in rear stand provides both a bench stand for comfortable use on the bench, as well as extending round 180° to act as a hanging bracket.
4000 counts LCD display, 20mm high
Product selection table
AVO300
DC Current
Backlight
Polarity
AC Voltage
AC Current
AVO310:
AVO310 only
AVO310
Technical Features
DC Voltage
4000 counts LCD display, 25.4mm high
1000 V 1000 V 10 A
1000 V Automatic, (-) negative polarity indication.
1000 V 10 A
10 A
10 A
Resistance 0.1 Ω to 40 MΩ
Y
Y
Di d
Y
Y
Over-range "OL" mark indication. Low battery indication: A Battery symbol is displayed when the battery voltage drops below the operating level.
Measurement rate
AVO300 Digital Multimeter Safety
AC Current (Auto-ranging)
The instrument complies with EN61010-2-32
Range
Resolution
400.0 µA
Accuracy
0.1 µA
Powe:
4000 µA
1 µA
One 9 V battery , NEDA 1604, IEC 6F22
40.00 mA
10 µA
400.0 mA
100 µA
Dimensions
10 A
10 mA
182 (H) x 82 (W) x55 (D) mm
Overload Protection: 0.5 A / 1000 V and 10 A / 1000 V Fuse.
+1.5% of rdg ±5 digits
+3.0% of rdg ±5 digits
AC Response: 50Hz to 400Hz
Weight: Approx
Maximum Input:
375g
4000 µA ac rms on µA 400 mA ac rms on mA 10 A ac rms on 10 A range.
Accuracy Accuracy is given at 18 ºC to 28 ºC (65 ºF to 83 ºF), less than 70 % RH
DC Voltage (Auto-ranging)
Range
Resolution
400.0 mV
0.1 mV
+0.5% of rdg ±2 digits
4.000 V
1 mV
40.00 V
10 mV
400.0 V
100 mV
600 V
1V
Accuracy
+0.8% of rdg ±2 digits
Resistance [Ω] (Auto-ranging)
Range
Resolution
400.0 Ω
0.1 Ω
4.000 kΩ
1Ω
40.00 kΩ
10 Ω
400.0 kΩ
100 Ω
4.000 M Ω
1 kΩ
40.00 M Ω
10 kΩ
Accuracy +0.8% of rdg ±5 digits
+0.8% of rdg ±2 digits +3% of rdg ±8 digits
Input Protection: 1000 V d.c. or 1000 V a.c. rms. +1% of rdg ±2 digits
Input Impedance: 7.8M Ω.
AVO300: Diode Test
Maximum Input: 1000 V d.c.
Test current
Resolution
Accuracy
AVO300 Digital Multimeter
Item 1B
MFT1500 Series
Combined Insulation, Loop & RCD Tester
MFT1500 Series Combined Insulation, Loop & RCD Tester ■
Combined 16th Edition testing
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Guaranteed non-tripping loop test range
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Backlit display and selector ranges
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Automatic RCD testing (MFT1552 & MFT1553 only)
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Bluetooth downloading (MFT1553 only)
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Illuminated switch probe
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Selectable touch voltage
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Touch (fault) voltage and display
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Calibrated earth loop test lead
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Calibration certificate
MFT1500 Series
Combined Insulation, Loop & RCD Tester ■
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V ariable buzzer thr eshold controls the limit at which the continuity buzzer stops so unding. Se lected f rom 2 to 100 in 6 steps.
Lead null stores the test lead resistance and deducts this v alue f rom the continuity result, e v en if the instr ument is s witched o ff . Thus reducing the chance of possible measurement errors.
RCD TESTING: ■
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Insulation testing: ■
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Insulation test at 250 V , 500 V and 1000 V f or testing lo w v oltage applications. A 1000 V w ar ning is issued pr ior to per f or ming the 1000 V insulation test. r ming insulation or Li ve cir cuit wa rning when per fo continuity measurements a liv e circuit w ar ning is displa y ed and an audible w ar ning sounded if connected to a c ircuit with a v oltage greater than 25 V (15 V f or continuity testing).
Safet y lockout at v oltages greater than 55 V dur ing continuity and insulation testing, the instr ument automatically w ar ns the operator and inhibits any testing, pre v enting accidental damage to the instr ument and full protection to the operator. The ‘ Auto dischar ge’ f acility saf ely dischar ges all circuits after an insulation test, pre v enting accidental shock f rom a stored char ge on a long cable dur ing or after disconnection.
LOOP TESTING
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10 m A to 1000 m A R CD r anges. All standard R CDs f rom 10 mA to 1000 mA are fully suppor ted. All standard R CD test functions are a v ailable with both 0° and 180° phase angle at 1 /2I, I and 5I up to 300 mA . R CD r amp test measures the R CD tr ip current. The ramp test displa y s the actual tr ip current on all R CD ranges instead of tr ip time. Ideal f or identifying nuisance tr ipping R CDs. The current is stepped up f rom 1 /2I to I in 200 ms s teps. Fault ( Touch) v oltage can no w be set f or either 25 V or 50 V depending on application. Fault/touch voltage can also be d ispla y ed up to 100 V on a selectable bar graph.
DC sensiti ve, R CD test option enables testing at I and 5I.
1 /2I,
GENERAL FEATURES: ■
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Quick to pick up and use by using colour coded ranges and no hidden functions the MFT1500 ser ies takes minutes to lear n ho w to use. Function buttons are colour matched to the test mode to e nsure eas y operation. Visible a nd audible Safet y warning f eatures are paramount with liv e circuit w ar ning and protection circuitr y . If liv e v oltages e xist on a circuit dur ing insulation or continuity testing the v oltage is d ispla y ed
MFT1500 Series
Combined Insulation, Loop & RCD Tester button in all test modes. ■
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LED tor ch using a built-in WHITE LED light pro vides illumination to the probe tip, pro viding essential lighting in lo w light conditions.
Live circuit warnings Insulation: 25 V threshold Continui t y :
R ed /gr een status LED duplicates the w ar ning displa y on the main instr ument displa y . A RED LED indicates a v oltage present on an insulation range. A GREEN LED indicates the instr ument is displa ying a v alid test result.
>15 V threshold
Thr ee inter changeable pr obe tips are supplied in standard shrouded, remo v able s hrouded and an e xtended probe tip to pro vides the ideal probe tip option.
55 V visual, audible and test inhibit
Insulation 25 V visual w ar ning Phase to ear th: >280 V visual, audible and test inhibit
Illuminated displa y and selector r anges. Not only the backlight, but also the selector dials are illuminated to allo w f or use in difficult lo w-light conditions. R ange or function change automatically operates the backlight, or by manual selection.
Continuity (to EN 61557-4) Ohms: 0.01 - 99.9 ( ±2% ±2 digits )
Instrument a nd document ca rry case is supplied to transpor t the instr ument as w ell as any necessar y test leads, documents, dra wings etc.
Buzzer Selectable limits of 2 , 5 , 10 , 20 , 50 , 100
MFT1552 & MFT1553 Additional features Selecting the auto (R CD ) f eature, star ts the R CD test current c y cle of 1 /2I, I and 5I. Each time the R CD is tr ipped, resetting it, automatically continues the test sequence.
Once completed, test results can be recalled on the MFT1552 or MFT1553.
100 - 99.9 k ( ±5% ±2 digits )
Open circuit v oltage 4-5 V d.c. Test curr ent:
>200 mA @ 2 Test Lead null :
Up to 9.99 (zero uses Test Button)
Loop test ranges (to EN 61557-3) Line /Ear th( Single phase )
MFT1500 Series
Combined Insulation, Loop & RCD Tester RCD ranges (to EN-61557-6) Supply : 100 V - 270 V 45Hz to 65Hz R anges:
1000 mA, 500 mA, 300 mA, 100 mA, 30 mA, 10 mA
Safety Double insulated to IEC61010-1-2001, Installation Categor y III, 300 V phase to ear th, 500 V phase to phase. In addition Probe designed to meet IEC 61010-031-2002 , Double insulated to Installation Categor y III, 300 V phase to ear th, 500 V phase to phase.
Ty pe: 1 /2I - 1/ 2 times the selected R CD rated current.
I - One times selected R CD rated current. 5I - Fiv e times I R CD rated current. RA MP - A ramp test that displa y s actual tr ip current .
DC sensiti ve - A DC test current at 1 /2I, I and 5I. Curr ent accur ac y : No tr ip ( 1 / 2I ) -8% to -2% Tr ip ( I ) and 5I +2% to +8% Trip t ime accur ac y :
±1% ±1 ms
EMC In accordance with IEC 61326 including amendment No. 1 Environmental Oper ating r ange: -5 to +40ºC Oper ating humidit y : 90% RH at 40ºC ma x Stor age temper atur e: -25 to 65ºC Max imum altitude: 2000 m Dust and w ater protection: Instr ument IP54, probe no rating
Touch (Fault) v oltage: 0 V to 100 V error ±5% to +15% ±0.5 V
Physical Dimensions:150 mm high x 85 mm wide x 235 mm deep
Selection: 25 V or 50 V
(6 in. x 3.5 in. x 9.5 in. )
Weight:1440 gms ( 3lb)
Power supply 8 x 1.5 V Alkaline cells type LR6
EN61557:
Fuses
Complies with the f ollo wing par ts of 61557, electr ical saf ety in lo w v oltage s y stems up to 1000 V a.c. and 1500 V d.c.Equipment f or testing, measur ing or monitor ing of protectiv e measures:-
R eplacea ble 500 mA (F) HBC 10 kA 500 V
Par t 1- General requirements
Non-replacea ble 7 A ( SIB A 70-065-6 3 ) x 2
Par t 2- Insulation resistance
Non-replacea ble 1 A
P t3 L
Battery life: 2600 insulation tests with a duty c y cle of 5 seconds on and 25 seconds off at 500 k.
i t
Item 1C
Network mains analysis clamp
Total effective current – THD Harmonic current no.1 % harmonic no.1 / fundamental component
Peak current – THD - Harmonic spectrum
Oscillogram U and I Phase angle ϕ
Reactive, active apparent power cos ϕ consumption
Item 1D
MIT400 CAT IV
Industrial Insulation Testers
MIT400 CAT IV Industrial Insulation Testers ■
CAT IV 600 V applications
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TRMS & DC Voltage measurement
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Insulation testing up to 1000 V and 200 G Continuity testing at 200 mA or 20 mA down to 0.01 Pass/Fail limit alarms Combined Analogue and dual digital display
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PI/DAR and Timer function
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Test result storage (MIT420)
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Bluetooth®
(MIT430)
wireless data transfer
MIT400 Series
Industrial Insulation Testers ■
k range e xtends resistance measurement to 1 M.
DISPLAY The displa y off ers a combination of analogue arc and a d ual digital readout: Analogue a r c: ■
Full displa y width analogue arc.
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Patented arc displa y sho w s essential char ge and d ischar ge character istics not visible o n a digital displa y .
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Single pointer “needle” response is similar to a mo ving coil meter.
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Logar ithmic displa y f or better lo w insulation v alue measurements.
Dual digital displa y : ■
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Lar ge main digital readout f or good visibility of all main measurement results
Second digital displa y for additional data such as:
transmitter being enabled when the Do wnload mode is selected on the instr ument. NOTE: The receiving PC needs to ha v e Bluetooth capability or a USB por t fitted a Bluetooth receiv er. Class II (10m) is acceptable.
SAFETY Designed to be e x ceptionally saf e to use, f ast detecting circuitr y pre v ents damage to the instr uments if accidentally connected to liv e circuits or across phases. Specifically, all instr uments: ■
Meet the inter national requirements of IEC1010-2 and EN61557.
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Liv e circuit detection inhibits insulation testing on circuits abo v e 50 V .
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Liv e circuit detection and test inhibit on continuity measurements.
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Def ault displa y of liv e circuit v oltage o n all ranges.
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Detection and inhibit functions e v en if the protection fuse has f ailed.
Insulation test v oltage. Insulation leakage current.
Supply f requenc y (when measur ing v olts ). Test mode eg. PI, D AR or TI (Timed mode ).
MIT40X - VARIABLE INSULATION VOLTAGE
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Suitable f or use on C AT IV applications and supply v oltages to 600 V .
600 V CAT IV All MIT400 instr uments are designed to meet the saf ety ui nt f C AT IV 600 V
MIT400 Series
Industrial Insulation Testers
All quoted accuracies are at +20°C.
A ccur ac y : Open cir cuit voltage: Shor t cir cuit c urr ent:
Insulation Nominal test voltages MIT400 250 V, 500 V, 1000 V MIT410, 420,430 50 V, 100 V, 250 V, 500 V, 1000 V MIT40 X 10 V to 100 V v ar iable (1 V increments )
Voltage range 0 to 600 V d.c. ±2% ±2 digits 10 mV to 600 V TRMS sinusoidal (40 to 400 Hz) ±2% ±2 d igits 0 to 1000 V on Analogue scale Unspecified input le v el 0 - 10 mV (40 to 400 Hz)
Insulation resistance range MIT400 20 G MIT410 100 G MIT420, 430 200 G MIT40 X 200 G
For non-sinusoidal wavefor ms additional specif ication apply : ±3% ±2 digits 101 mV to 600 V TRMS and ±8% ±2 digits 10 mV to 100 mV TRMS
SPECIFICATION
Range Full Scale Accuracy 1000 v olts ±3% ±2 digits ±0.2% per G 500 v olts. ±3% ±2 digits ±0.4% per G 250 v olts. ±3% ±2 digits ±0.8% per G 100 v olts. ±3% ±2 digits ±2.0% per G 50 v olts. ±3% ±2 digits ±4.0% per G 10 v olts ±3% ±2 digits ±2.0% per 100 M Analogue r ange:
±3% ±2 digits 5 V ±1 V 20 µA ± 5 µA
Default V oltmeter :
Operates at >25 V a.c. or d.c. on any range e x cept OFF
Fr eq uenc y :
40-450 Hz (40 Hz - 99,9 Hz) ±0.5% ±1 digit (100 Hz to 450 Hz)
Capacitance measurement MIT420, MIT430
1 G full scale
Shor t Cir cuit Curr ent: Ter minal voltage:
2 mA +0% -50% -0% +20% ±1 V
Test Curr ent on load: 1 mA at min. pass v alue of insulation specified in BS7671, HD384 and IEC364, 2 mA ma x .
Measur ement r ange: A ccur ac y :
100 pF to 10 µF ± 5.0% ±2 digits
Distance by capacitance: MIT420, MIT430 A ri thmetic conv ersion f rom capacitance measurement on Def ault capacitance measurement: 50nF/m
MIT400 CATIV
Industrial Insulation Testers E.M.C. In accordance with IEC 61326 including amendment No.1 Temperature effects Temper atur e coeff icient: <0,1% per °C up to 1 G Environmental Oper ating r ange: -10 to +55°C 90% RH at 40°C ma x . Oper ating humidit y : -25 to +70°C Stor age temper atur e r ange: Calibr ation Temper atur e: +20°C Max imum altitude: 2000 m Dust a nd water pr otection: IP54 Protected against dust and splashing w ater
Item 1E
MIT520/2 and MIT1020/2 5 kV and 10 kV Insulation Resistance Testers
MIT520/2 and MIT1020/2 5 kV and 10 kV In sulation Resistance Testers
DESCRIPTION
I
CAT IV 600 V
I
Mains or battery powered
I
Variable test voltage from 50 to 5000 or 10,000 V
I
Automatic IR, PI, DAR, SV and DD tests
I
Measures to 15 TΩ (5 kV) and 35 TΩ (10 kV)
I
RS232 and USB download of results to Megger Download Manager
I
On board memory for results storage
MIT520/2 and MIT1020/2 5 kV and 10 kV Insulation Resistance Testers Real time output Serial, once per second of test voltage, current and resistance
SPECIFICATION Voltage input range 85-265 V rms, 50/60Hz, 60 VA MIT520/2 batter y life Typical capacity is 6 hours continuous testing at 5 kV with a 100 M load MIT1020/2 batter y life Typical capacity is 4 hours continuous testing at 10 kV with a 100 MΩ load MIT520/2 test voltages 50 V to 1 kV in 10 V steps, 1 kV to 5 kV in 25 V steps MIT1020/2 te st voltage s 50 V to 1 kV in 10 V steps, 1 kV to 10 kV in 25 V steps MIT520/2 accuracy (23°C, 5 kV) ±5% to 1 TΩ ±20% to 10 T Ω MIT1020/2 accuracy (23ºC, 10 kV) ±5% to 2 TΩ ±20% to 20 T Ω Guard 2% error guarding 500 k Ω leakage with 100 M Ω load Display range Digital display (3 digits) 10 k Ω to 15 TΩ (MIT520/2) to 35 TΩ (MIT1020/2) Analogue display 100 k Ω to 1 T Ω Short circuit/ charge current 3 mA @ 5 kV (MIT520/2) or 10 kV (MIT1020/2) Capacitor charge time <3 seconds per µF at 3mA to 5 kV (MIT520/2) <5 seconds per µF at 3mA to 10 kV (MIT1020/2)
Operating temperature -20°C to 50°C Ω
Storage temperature -25°C to 65°C Ingress protection (lid closed) IP65 Humidity 90% RH non-condensing at 40°C Safety Meets the requirements of EN61010-1:2001 CATIV 600 V EMC Meets the requirements of EN61326-1:2006 for use in heavy industrial areas. Dimensions 305 x 194 x 360 mm (12.7 x 6 x 14.2 inches) Weight 7.1 kg (16lb) approx.
MIT520/2 and MIT1020/2 5 kV and 10 kV Insulation Resistance Testers
ORDERING INFORMATION
2.Winding Resistance Testing
Item 2A
MTO210 Transformer Ohmmeter
MTO210 Transformer Ohmmeter
DESCRIPTION The MTO210 Transformer Ohmmeter is a line-operated, field-portable instrument designed specifically to measure the dc resistance of all types of magnetic windings safely and accurately. It can test rotating machine windings and perform low-current resistance measurements on
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Direct 2-channel digital reading
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Patented “Quick Test” measurement technique
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0.25% measurement accuracy
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Integrated demagnetization feature
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Tests operation of on-load tap-changers
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Auto safety discharge circuit provided
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To help locate the presence of defects in transformers, such as loose connections
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To check the “make-before-break” operation of on-load tap-changers
A regular maintenance p rogram that includes winding
MTO210 Transformer Ohmmeter ■
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The MTO210 allows for test of transformers with onload tap-changers and provides a “break-before-make” indicator, in the event of any discontinuity. Beacon drive circuit is provided for use with optional beacon strobe light. For those users who choose to create an external interlock safety fence, a safety interlock circuit is provided.
SPECIFICATIONS Input 120/240 V, 50/ 60 Hz, 720 VA
Output Current Range: Up to 10 A (dc) Open -Circu it Tes t Vo ltage : up to 50 V dc
Resistance measurement/display
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Remote trigger switch is provided for testing transformers with tap-changers.
Resistance: 1 µΩ to 2000 Ω Accuracy: ±0.25% reading, ±0.25% full scale (when current has stabilized) Resolution: Up to 6 digits
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Internal flash memory allows for mass storage of dataset records, for later recall, printing, and analysis.
Environmental
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Ruggedized Kelvin clamps, with 4 inch (100 mm) jaws, are provided eliminating the need for bushing adapters.
Operating: 14° F to 122° F (-10° C to 50° C) Storage: 5° F to 158° F (-15° C to +70° C) Relative Humidity: 0-90% non-condensing
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Field upgradeable firmware.
Displays
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Compatible with PowerDB software package.
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Built-in discharge circuit safely discharges the specimen when test is completed, if lead accidentally disconnects or if power is lost.
Dimensions
Wide resistance range allows heat-run testing of many transformer types.
Net 28 lb (12.7 kg)
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Output RS232 serial port is provided for optional printing of results.
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Ideal for use in shop or substation environments because of its light weight and portability.
Two 1” high, 6 character, 7-segment, LCDs One 0.71” high, 6 character, 7-segment, LCD 8.5 H x 21.5 W x 13 D in (216 H x 546 W x 330 D mm)
Weight Printer Print to optional 4 inch strip thermal paper printer
Item 2B
DLRO 10 AND DLRO10X
Digital Microhmmeter
DLRO 10 and DLRO 10X Digital Microhmmeter ■
Auto current reversal cancels standing emfs
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Protected to 600 V
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Automatically detects continuity in potential and current connections
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Multiple operating modes including fully automatic
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Alpha-numeric keypad for entering test notes (DLRO 10X)
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User selectable high and low limits (DLRO 10X)
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Printer output and memory (DLRO 10X)
DLRO 10 AND DLRO 10X
Digital Microhmmeter DLRO 10 will display the average of the measurements achieved using forward and reverse current, while DLRO 10X displays both individual measurements and the average. Nor mal mode initiates a test by pressing the Test button on the instrument front panel after connecting the test leads. Continuity of all four connections is checked, forward and reverse currents are applied.
Auto mode allows forward and reverse current measurements to be made and the average displayed simply by making contact with all four probes. This mode is ideal when working with the supplied handspikes. Each time the probes are removed and reconnected to the load another test will be performed without the need to press the test button on the instrument. Continuous mode allows repeated measurements to be made on the same sample. Simply connect the test leads and press the test button. The measurement is updated every 3 seconds until the circuit is broken. Inducti v e mode is intended for use when measuring inductive loads. When measuring inductive loads it is necessary to wait for the voltage to stabilise. This means that the measurement could take a few seconds or several minutes. The test leads are firmly connected to the item to be measured and the Test button is pressed. The instrument will pass a current through the sample and wait for the voltage to stabilise. If possible the current will be increased. This procedure will be repeated until the voltage detected falls into the range 15 mV to 200 mV. The instrument will then continue to take readings, which will gradually decrease to
FEATURES AND BENEFITS ■
Small, lightweight and portable - can be used in tight places, reduces the need for extra long leads and two person operation.
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Four terminal resistance method shows the true resistance of the item under test.
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Bright LED (DLRO 10) and LCD (DLRO 10X) displays are easily visible under all lighting conditions and reduce human error.
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Automatically applies forward and reverse currents which cancel out any standing voltages across the sample under test. Checks for undue noise during measurement, reducing the possibility of recording the incorrect result. Automatically detects continuity in P and C circuits, preventing erroneously high reading to be taken due to high resistance contact.
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Battery module has a battery condition indicator allowing the user to check the state of spare batteries without connecting to the instrument.
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RS232 connector on the DLRO 10X allows downloading of results in real time or stored for later retrieval.
DLRO 10 AND DLRO 10X
Digital Microhmmeter Full Scale Volts
Test Current
Full Scale
Resolution
Accuracy
Resistive
Inductive
Resistive
Inductive
1.9999 mΩ
0.1 µΩ
±0.2% ±0.2µΩ
20 mV
n/a
10 A
n/a
19.999 mΩ
1 µΩ
±0.2% ±2 µΩ
20 mV
20 mV
1 A
1 A
199.99 mΩ
10 µΩ
±0.2% ±20 µΩ
20 mV
200 mV
100 mA
1 A
1.9999 Ω
100 µΩ
±0.2% ±0.2 m Ω
20 mV
200 mV
10 mA
100 mA
19.999 Ω
1 mΩ
±0.2% ±2 mΩ
20 mV
200 mV
1 mA
10 mA
199.99 Ω
10 mΩ
±0.2% ±20 m Ω
20 mV
200 mV
100 µA
1 mA
1999.9 Ω
100 mΩ
±0.2% ±0.2 Ω
200 mV
200 mV
100 µA
100 µA
D L RO 10 Measurement:
Mode: Control: Speed:
Display:
Measurement: Range and Safety:
Test Method: Test Current:
Manual, Auto, Continuous,
Manual, Auto, Continuous,
High Power
High Power, Unidirectional
Fully Automatic
Fully Automatic/Manual
<3s for forward & reverse current and to display average 41/2 digit seven segment LED LED indication
Large backlit LCD
Single cycle reversing d.c. ratiometric measurement -average result d isplay. Accuracy: Stability:
Ma x imum Lead Resistance:
Voltmeter input impedance: Hum rejection:
D L RO 10 X
±10% <10 ppm per second 100 mΩ total for 10A operation irrespective of battery condition. > 200 kΩ
Less than 1% ±20 digits additional error with 100 mV peak 50/60 Hz. on the potential leads. Warning will show if hum or noise exceeds this level.
DLRO 10 AND DLRO 10X
Digital Microhmmeter
ORDERING INFORMATION Item (Qty)
Order No.
DLRO 10 Digital Low Resistance Ohmmeter 6111-428 DLRO10X Digital Low Resistance Ohmmeter 6111-429 Complete with 7 Ah NiMH battery module. 6340-101 DH4 Duplex handspikes (2), one with indicator lights. 1.2m / 4 ft 6111-503 Battery charger for operation from 115/230 V . 50/60Hz supply. 6280-333 Cigar lighter adapter for battery charging. 6280-332 User guide. 6172-473 Warranty book. 6170-618 Optional Accessories at extra cost Carrying case for DLRO10/10X and all standard accessories. 6380-138 Carrying case for optional lead sets. 18313 Calibration Shunt,10 Ω, current rating 1 mA. 249000 Calibration Shunt, 1 Ω, current rating 10 mA. 249001 Calibration Shunt, 100 mΩ current rating 1A. 249002 Calibration Shunt, 10 mΩ current rating 10 A. 249003 Certificate of Calibration for Shunts, NIST CERT-NIST Replacement tips for DH4, DH5 and DH6 handspikes. Needle point 25940-012 Serrated end 25940-014 Optional Test Leads at extra cost
Item (Qty)
Straight Duplex Handspikes (2) Heavy Duty with fixed contacts.
Duplex Heavy Duty 5cm (2") C-Clamps. (2)
Order No.
2m/7ft 5.5m/18ft 9m/30ft
242002-7 242002-18 242002-30
2m/7ft 5.5m/18ft 9m/30ft
242004-7 242004-18 242004-30
Duplex handspikes with replaceable Needle Points 2m/7ft Duplex 1.27 cm (1/2 ") Kelvin Clips. (2) gold plated 2m/7ft silver plated 2m/7ft Duplex 3.8 cm (11/2") Kelvin Clips. (2) 2m/7ft 5.5m/18ft 9m/30ft Single Leads Single handspike (1) for potential measurement.
Current clip (1) for current connections
2m/7ft 5.5m/18ft 9m/30ft 2m/7ft
242003-7 241005-7 242005-7 242006-7 242006-18 242006-30
242021-7 242021-18 242021-30 242041-7
Item 2C
R8228-5 - IMPULSE WINDING TESTER Function: Function: Verification of the quality on electrical windings with control of the absence of short-circuits Application:: Application On any kind of winding with a minimum of 10 microHenry inductance Use:: Use Laboratory or small productions Features:: Features
Low energy test without damaging the coil 4 kind of waveform comparison methodes Up to 20 MSPS sampling rate Multi-trigger mode programmable Direct display of comparison results Technical specifications
Output impulse voltage : 500-5000V +/-3% +/-5V Voltage control mode
Normal : Voltage programmable on terminals when terminals are open
3.Transformer Turn Ratio Testing
Item 3A
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets
TTR®300 Series 3-Phase Transformer Turns Ratio Test Sets ■
Stand-alone or remote-control operation
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Accurately measures ratio, phase deviation and exciting current
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Field upgradeable without compromise to calibration
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Built-in capability for storing and downloading test results in an XML format, via RS-232, Ethernet or USB ports (depending on model)
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Works in the presence of high interference/ high voltage
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Highest ratio measurement (45,000:1); highest accuracy (0.1%)
TTR330 shown ■
Displays % error vs. name plate with pass/fail limits
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets Also, with a simple interface to PowerDB LITE PC software application (included), the user can perform data analysis and trending of results. The TTR320 includes the following features: ■
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TTR310 — text-based LCD interface unit ■
TTR310 This unit features an easy-to-read, high-contrast LCD which can be seen in bright sunlight and provides the user interface for instrument set-up and test operation. The unit comes complete with the software application, PowerDB LITE.
The TTR310 has the ability to store test results, upload results to a PC (via RS232 serial port), and/or print them in the field via optional thermal paper printer, without the use of an external computer. Some of the features of the TTR310 consist of: ■
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Fully automatic operation (either stand-alone or remote-control) Field upgradeable to a TTR330 or TTR320 without compromise to calibration
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Fully automatic operation (stand-alone or remotecontrol) Field upgradeable to a model TTR330 without compromise to calibration Graphical User Interface allows for automated setup and control through easy-to-read ICON based screens Built-in capability for storing test results, in an open XML format, to either internal memory or to an external USB storage device Built-in RS-232 port and optional thermal spool-paper printer allows for printing of test results, while in the field, and without the use of an external computer 5.7” VGA bright color display
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets The TTR330 offers the following: ■
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Fully automatic operation (stand-alone or remotecontrol) with user interface via on-screen customizable test forms Integrated PowerDB ONBOARD allows for data analysis and trending while in the field without the use of an external computer Built-in USB port and op tional USB printer allows for 8.5”x 11” test forms printing without the use of a laptop Built-in capability for storing test results, in an open XML format, to either internal memory or to an external USB storage device Full 8.4” VGA color display
PowerDB LITE™ Acceptance & Maintenance Test Data Management Software All four units in the TTR300 Series come complete, at no extra charge, with PowerDB LITE (a new powerful PC Windows ® based software program). PowerDB LITE allows the operator to completely program a test routine, in advance, for a transformer, save it under the transformer ID number, and then recall it in the future as required. Testing on the TTRs can be performed in a remote control manner, via PowerDB LITE. Once testing is complete on all of the instruments, results are easily downloaded to the external PC in an “open” XML data format. The instruments’ internal memory also maintains historical datafiles so that, through interface to PowerDB LITE, current
PowerDB™ ONBOARD Acceptance & Maintenance Test Data Management Software (Model TTR330 only) The “PowerDB ONBOARD” logo means PowerDB software is running on a computer embedded within the TTR330. This powerful feature provides the TTR330 with a common “User Interface” to minimize op erator training and provides a seamless interface to the full PowerDB (PC version) application. Easy-to-read on-screen test forms provide the user interface for instrument set-up and test operation. Results are displayed against pass/fail nameplate limits and can be stored (either internally or to a USB storage device) in an open XML data format. The ONBOARD software also maintains a historical data file so that, while in the field, current and past results can be analyzed, compared, and displayed in trend charts without the need of an external computer. An 8.5” x 11” test form can also be printed in the field via an optional USB printer, and without the use of an external computer.
Built-in Memory The TTRs come equipped with sufficient internal memory to store test results. The outcome of the results are based on the model: TTR310: stores up to 200 three-phase data sets in the field for later retrieval. Test results can be printed on an optional printer (using thermal spool paper) whenever a hard copy is desired, or the data can be downloaded to a
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets APPLICATIONS
Turns Ratio Range and Accuracy
The TTR300 Series applies voltage to the high-voltage winding of a transformer and accurately measures the resulting voltage from the low voltage winding. In addition to turns ratio, the units measure excitation current, phase angle deviation between the high- and low-voltage windings and percent ratio error.
8 V ac:
Transformer Turns Ratio Transformer turns ratio is the ratio of the number of turns in the high-voltage winding to that in the low-voltage winding. Complexity in the measured ratio versus nameplate ratio occurs with most three-phase power transformers because multipliers such as √3 are required to match the measured ratio to the nameplate ratio. The TTR300 Series automatically applies the multiplier in a form which allows the operator a direct comparison to the nameplate (or expected) ratio. The built-in calculator displays the % error versus nameplate for each tap and each winding, without the need for a computer.
Exciting Current The TTR provides accurate measurement of exciting current (to 0.1 mA) which can help provide information about the condition of a transformer’s core. Unwanted circulating currents or unintentional core grounds can increase the exciting current and indicate a problem.
Phase Angle Deviation and its Application The phase angle deviation, displayed in either degrees (minutes) or radians, is the phase relationship between the
±0.1% (0.8 to 2000) ±0.25% (2001 to 4000) ±0.35% (4001 to 8000) 40 V ac: ±0.1% (0.8 to 2000) ±0.15% (2001 to 4000) ±0.3% (4001 to 10,000) ±0.35% (10,001 to 25,000) 80 V ac: ±0.1% (0.8 to 2000) ±0.15% (2001 to 4000) ±0.25% (4001 to 10,000) ±0.30% (10,001 to 45,000) Resolution: 5 digit for all ratios
Printer Interface TTR300: TTR310: TTR320: TTR330:
Not applicable RS-232 port RS-232 port USB
Computer Interface TTR30 0 and TTR310: RS-232 port TTR320 and TTR330: Ethernet
User Interface TTR300: Not applicable TTR310: 5.7 in., B&W display, text on-screen view, numeric keypad TTR320: 5.7 in., full-color VGA, graphical icon on-screen view, full QWERTY keypad and navigational pushbuttons TTR330: 8.4 in., full-color VGA, test forms on-screen view, full QWERTY keypad and navigational pushbuttons
Internal Data Storage TTR310: up to 200 data sets
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets
FEATURES AND BENEFITS GUIDE
TTR300
TTR310
TTR320
TTR330
Field upgradeable/interchangeable to any other TTR in the Series without compromising calibration (patent pending)
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Remote controllable
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Works in the presence of high interference/high voltage
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Displays % error vs. name plate with pass/fail limits
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Measures the widest turns ratio range in the industry (45,000:1) and provides the highest accuracy (0.1%)
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Enables operator to enter the ratio of transformer and all of its taps letting operator know immediately when a tap is outside acceptable limits so problem can be flagged
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Equipped with “Remote TEST” switch for single person testing, allowing the operator to test transformers with “LTCs” very quickly
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Measures phase deviation of the transformer primary versus secondary; quickly indicates problems in the transformer such as partial shorted turns and core faults. Useful in verifying phase errors in PTs and CTs Rugged, lightweight design ideal for a harsh field and substation environment
TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets OPTIONAL ACCESSORY LEADS Our heavy duty leads feature right angle connectors for a more streamlined look and feel. The larger clips are useful when clamping onto large transformer bushings. Please specify catalog number for lead length/configuration when ordering.
ORDERING INFORMATION Item (Qty) Three-Phase TTR, remote controlled
Cat. No.
Item (Qty)
TTR300
Optional Accessories
Three-Phase TTR, stand alone or remote controlled
TTR310
PowerDB software, 1st machine license, soft key
Three-Phase TTR, graphical user interface
TTR320
PowerDB, 1st machine license, USB dongle
Three-Phase TTR with PowerDB ONBOARD
TTR330
Calibration device (for TTR verification)
Cat. No. DB1001 DB1001S 550555
Note: 120 V 50/60-Hz operation standard. For 230 V, 50/60-Hz operat ion Add -47 to Cat. No.
3-ø lead set adapter to allow use of Megger TTR C/N 550503 lead set (30915-xxx)
37087
Included Accessories
3-ø shielded test lead set, X and H winding 30 ft (9 1 m)
37093
Three-Phase TTR® Transformer Turns Ratio Test Set SPECIFICATIONS Input Power
Display LCD module, 256 x 128 dots (42 characters by 16 lines)
Cat. No. 550503: 120 V ac ±10%, single phase, 50 ±2 Hz or 60 ±2 Hz, 100 VA Cat. No. 550503-47: 230 V ac ±10%, single phase, 50 ±2 Hz or 60 ±2 Hz, 100 VA
Test Result Storage Internal, nonvolatile memory for storing up to 200 sets of threephase measured and calculated ratio, exciting current, phase, ratio error, plus serial number and transformer type.
Battery Operation (Optional) Inverter 12 V dc to 120 V/230 V ac for operation from vehicle battery.
Communication/Control Software — ComLink Included ComLink software for data storage, report printout and download of data to a PC, and control of the TTR via PC.
Excitation Voltage 8, 40, or 80 V rms, automatically or manually selected Excitation Current Range and Accuracy 0 to 500 mA, 3 digit resolution, ±(2% of reading + 1 digit) Phase Deviation Range and Accuracy ±90 degrees, 1 decimal point for the minutes display, 2 decimal points for the degree display, or for the centi-radian display Accuracy: ±3 minutes Turns Ratio Range and Accuracy 8 V ac: ±0.1% (0.8 to 2000) ±0.25% (2001 to 4000) ±0.35% (4001 to 8000) 40 V ac: ±0.1% (0.8 to 2000) ±0.15% (2001 to 4000) ±0.3% (4001 to 10,000) ±0.35% (10,001 to 25,000) 80 V ac: ±0.1% (0.8 to 2000) ±0.15% (2001 to 4000) ±0.25% (4001 to 10,000) ±0.30% (10,001 to 45,000) Resolution: 5 digit for all ratios PC/Printer Interface
Transformer Winding Phase Relationship ANSI C57.12.70-1978 CEI/IEC 76-1:1993 and Publication 616:1978 AS-2374, Part 4-1982 (Australian Standard) Safety/EMC/Vibration Meets the requirements of IEC-1010-1, CE and ASTM D999.75 Temperature Range Operating: 23° F to 122° F (-5° C to 50° C) Storage: -58° F to 140° F (-50° C to 60° C) Relative Humidity 0 to 90% noncondensing Measuring Time 8 to 20 seconds depending on mode of operation and type of transformer. Measurement Method ANSI/IEEE C57.12.90 Dimensions 10.5 H x 17.5 W x 6.9 D in. (266.7 H x 444.5 W x 175.3 D mm) Weight Approx. 16.5 lbs (7.5 kg), instrument only, not including leads
Item 3B
TTR™100 Single-Phase Handheld TTR
TTR™100 Single-Phase Handheld TTR
DESCRIPTION
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Fully automatic; fast; easy-to-use; handheld; robust; lightweight
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Battery powered with power-saving and shutdown function
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Tests turns ratio, phase displacement, excitation current, vector group, winding resistance and polarity
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Alphanumeric keyboard
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RS232 for data transfer and printing
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Stores 200 test results and 100 userdefined transformer test settings
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Six user-selectable languages
The TTR100 comes equipped with specially designed leads
TTR™100
Single-Phase Handheld TTR APPLICATIONS The proper operation of a transformer relies almost entirely on the electrical properties of its windings. To ensure continued proper operation, transformers are tested to verify that their electrical properties have not changed from design specifications. A TTR is an extremely useful instrument for testing transformer windings because it can locate several types of problems within a single- or a three-phase transformer. It is also ideal to use for testing in meter shops for the inspection of CTs and PTs. It can determine the no-load accuracy of CTs and PTs and also determine the need to further test faulty CTs and PTs.
The TTR100 applies voltage, with voltage ratio being directly proportional to turns ratio, to the high-voltage winding of a transformer and accurately measures the resulting voltage from the low voltage winding. In addition to turns ratio, the unit measures excitation current, phase angle deviation between the high and low voltage windings, percent ratio error, dc winding resistance and polarity. Transformer Turns Ratio Transformer Turns Ratio is the ratio of the number of turns in the high voltage winding to that in the low voltage winding.
A Transformer Turns Ratio Test Set such as the TTR100 can directly measure the ratio of single phase, as well as three phase transformers. Transformer ratio can change due to several factors, including physical damage from faults, deteriorated insulation, contamination and shipping
The Megger TTR100 can measure the DC resistance of both single phase and three phase transformer windings. Transformer Polarity Polarity of a distribution transformer becomes of interest in order to determine its proper connection within a power network.
The Megger TTR100 will identify subtractive and additive polarity of the single-phase distribution transformers. FEATURES AND BENEFITS ■ Faster, easier handheld operation. User no longer has to kneel or bend down to operate the instrument.
Powered by rechargeable battery, provides up to fifteen hours of field operation. ■
Report header information such as company name, substation name, transformer manufacturer, transformer ratio, operator, temperature and %RH can be entered and saved via the alphanumeric keypad. ■
Measures the widest turns ratio range in the industry (20,000:1) with the highest accuracy (±0.1%, 0.8 to 2000) at a low excitation voltage. ■
Enables the operator to enter the ratio of the transformer and all of its taps. This allows the operator to know immediately when a tap is outside the acceptable limits so that problem taps can be easily identified. ■
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Records ratio errors for bushing CTs to an accuracy of
TTR™100
Single-Phase Handheld TTR Rugged, lightweight design ideally suited for a harsh field and substation environment. ■
■ Three user selectable standards: ANSI, IEC, and Australian. Also meets IEC1010 as well as CE.
Winding Resistance Accuracy ±(10% of reading + 1 digit) for 10 Ω to 2000 Ω range ±(10% ±1 mΩ) for 10 mΩ to 9.99 Ω range ±(10% ±0.5 mΩ) for 0.1 mΩ to 9.99 mΩ range
Six user selectable languages: English, French, German, Italian, Portuguese and Spanish.
PC/Printer Interface RS232C port, 9-pin, 57.6 Kbaud (19.2 Kbaud for the printer)
SPECIFICATIONS
Display full graphics LCD module, wide temperature range, 128 x 64 dots (21 characters by 8 lines)
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Type of Power Rechargeable NIMH battery pack, 3.6 V dc, 3800 mAh Battery Life 15 hours of field operation Charger input voltage 100-250 V ac, 50/60 Hz ±2 Hz Unit can be operated while charging. Charging time is approximately three hours Optional charger source Optional inverter 12 V dc to 115 V ac for powering a charger from vehicle battery (non CE marked) Excitation Voltage 8 V rms for testing distribution or power transformers, and PTs; 1.5 V ac RMS, or 8 V ac RMS for testing CTs. The excitation voltage is switched automatically if excitation current exceeds a preset value. Test Frequency 55 Hz internally generated providing a universal 50/60 Hz test set Excitation Current Range 0 to 100 mA, 4-digit resolution
Test Result Storage Internal, nonvolatile memory for storing up to 200 sets of singlephase measured and calculated ratio, exciting current, phase, ratio error, winding resistance, polarity, vector group, plus header information (company, substation, transformer manufacturer, transformer rating, instrument serial number, temperature, relative humidity, and operator name) In addition, up to 100 user-defined transformer settings can be stored. Computer Software Included software for downloading of data to a PC, data storage to database and report printout. Test Leads Supplied with one complete set of single-phase leads, 6 ft (1.8 m) in length Transformer Winding Phase Relationship ANSI C57.12.70-1978 CEI/IEC 76-1:1993 and Publication 616:1978 AS-2374, Part 4-1982 (Australian Standard) Safety/EMC/Vibration
TTR™100
Single-Phase Handheld TTR OPTIONAL ACCESSORIES Power Inverter It may be necessary to have a portable power source in the field. A power inverter using a vehicle’s battery can provide the energy to the battery charger in order to power up the TTR100. The optional inverter can be connected to the vehicle’s cigarette lighter. The inverter’s output provides a true sine wave rated to deliver 60 watts of ac power continuously or 75 watts of power for 5 minutes. It is also protected with features that will automatically shut off in case of under-v under-voltage, oltage, over voltage, and over-temperatu over-temperature. re. (Non CE marked.) Test Leads A set of 12 ft (3.6 m) test leads is available for testing larger transformers (two leads for the H winding and three leads for the secondary winding with tap).
Printer Test results, including transformer vector group, can
MEGGER 1-ph. TRANSFORMER TURN RATIO TESTER Catalog No. TTR100 TRANSFORMER TEST REPORT COMPANY: SOUTHWEST ENERGY SUBSTATION: HARDWOOD MANUFACTURER: MANUFACTUR ER: DELTA-STAR, IL TRANSFORMER RATING: 375 KVA AMBIENT TEMPERATURE: TEMPERATURE: 78 F RELATIVE HUMIDITY: 83% TTR S/N: 200308001 OPERATOR(S): OPERATOR (S): MIKE BRIGHT COMMENTS/NOTES: TEST DATE (M/D/Y): 04/15/03 09:27 TEST NO: 033 TRANSFORMER TRANSFORME R ID: 3AG-872B/AD39AM H VOLTAGE, V: 13800 X VOLTAGE, V: 240 CALCULATED TURNS RATIO: 57.500 TEST VOLTAGE: 8 V TRANSFORMER POLARITY: SUBTRACTIVE TRANSFORMER VECTOR GROUP: 1PH0 RATIO: N1 57.536 PHASE N1 (min): -1.5
DEV. N1:0.06% Rx12 (Ohm): 0.127
RATIO N2: 56.978 PHASE N2 (min): 0.7
DEV. N2: -0.04% Rx32 (Ohm): 0.119
Exc. I (mA): 0.12
RH (Ohm): 191.6
Figure 1: Sam ple Sin Sin gle-pha se three-w three-w ire series conn ection transform er test report report
TTR™100
Single-Phase Handheld TTR
ORDERING INFORMATION Order a TTR100 configured to your specific application. To determine the catalog number, fill in the blanks below with the corresponding number from the detailed information boxes. Ordering Example: To order a TTR100 for North American application, application, without a deluxe kit, and instruction manual in the English language, request catalog number TTR100-NA0-ENG
TTR100 — N A 0 — E N G
To order a TTR100 for North American application, application, with a deluxe kit, and instruction manual in the English language, request catalog number TTR100-NA1-ENG
TTR100 — N A 1 — E N G
Fill in these blanks with the corresponding letter or number. TTR100 — X
X
X — X
X
X
Country NA = North America
Instruction Manual
UK = United Kingdom
ENG = English
EU = European Union
FRN = French
(Determines pow er cord cord r equirement) Deluxe Kit Option 0 = No Ki Kitt 1 = Deluxe Kit, 120 V, V, 60 Hz printer package
V, 50 Hz printer 2 = Deluxe Kit, 230 V, package (Kit consists of TTR100, included accessories as well as all optional accessories, excluding Inverter P/N 35973)
SPN = Spanish
Item 3C
TTR™25 Handheld TTR
TTR™25 Handheld TTR
DESCRIPTION The Megger TTR25 is an automatic hand-held battery operated transformer turns ratio test set. It is used to measure the turns ratio, excitation current and polarity of windings in single- and three-phase distribution and power
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Single- and three-phase transformer testing
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Fully automatic; fast; easy-to-use; robust; lightweight
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Battery powered
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Tests turns ratio, excitation current, and polarity
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Simple, one-button operation
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Quick-start guide on front panel
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Operator-selectable languages
to verify that their electrical properties have not changed from design specifications. A TTR is an extremely useful instrument for testing transformer windings because it can help locate several types of problems within single- and three-phase transformers.
TTR™25
Handheld TTR
FEATURES AND BENEFITS ■ Fast, easy hand-held operation. No need to kneel or bend down to operate the instrument.
Powered by six standard “AA” alkaline batteries; no charger needed. Provides up to 12 hours of field operation.
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Display full graphics LCD module, adjustable back-lighting, wide temperature range, 128 x 64 dots (21 characters by 8 lines) Transformer Winding Phase Relationship ANSI C57.12.70-1978 CEI/IEC 76-1:1993 and Publication 616:1978 AS-2374, Part 4-1982 (Australian Standard)
Measures turns ratio range of 20,000:1, with a high accuracy (±0.1%, 0.8 to 2000) at a low excitation voltage.
Safety/EMC/Vibration Meets the requirements of IEC-1010-1, CE and ASTM D999.75
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Records ratio errors for bushing CTs to an accuracy of ±0.1% nameplate. This reduces the need for additional test equipment and improves set-up time.
Temperature Range Operating: -20º C to 55º C (-5º F to 130º F) Storage: -50º C to 60º C (-55º F to 140º F)
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Perfect for meter shops, the TTR25 can be used for inspection purposes to determine the no-load accuracy of most CTs and PTs. It also can be used to determine the need to test potentially faulty CTs and PTs.
Relative humidity Operating: 0 to 90% noncondensing Storage: 0 to 95% noncondensing
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Automatic self-calibration for each test. User selectable languages: English, Spanish, German, French and Portguese.
SPECIFICATIONS Type of Power Six standard “AA” (IEC LR-6) alkaline batteries Battery Life 12 hours of field operation Excitation Voltage 8 V rms for testing distribution or power transformers and PTs;
Protective Devices High voltage side shorting relay, transient voltage suppressors and gas surge voltage protectors Measuring Time Less than 5 seconds Measurement Method ANSI/IEEE C57.12.90 Dimensions 240 H x 115 W x 50 D mm (9.5 H x 4.5 W x 1.9 D in.) Weight Approximately 1.3 kg (2.8 lb), including leads
Item 3D
SINGLE-PHASE TTR® TRANSFORMER TURNS RATIO TEST SET
SINGLE-PHASE TTR® Transformer Turns Ratio Test Set ■
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DESCRIPTION
Used for testing single phase power and distribution transformers Design based on precision bridge measuring technique Available in hand-cranked or line-operated models Unmatched accuracy (( 0.1%) in a portable design
APPLICATIONS º
The Single Phase TTR Transformer Turns Ratio Test Set measures the turns ratio and exciting current of windings in power, potential and current transformers. Deviations in turns ratio readings indicate problems i n one or both windings or
The single phase models are primarily used for testing singlephase power and distribution transformers, for low-ratio readings up to 129.99:1, or up to 329.99:1 with an auxiliary transformer.
SINGLE-PHASE TTR® TRANSFORMER TURNS RATIO TEST SET SPECIFICATIONS Output 8 V, 50/60 Hz. Line-operated models supply up to 5 A for testing specialty power transformers having a high ratio and a low secondary voltage.
Metering Four decade dials
Model
Single-phase field sets
Turn Ratio
Exciting Current
Dimensions Accuracy
0.001 to 129.999
0 to 5 A**
Weight H x W xD
0 to 1 A**
Hand-cranked Line*
Single-phase rack mounted
Range
Powe r Source
(
0.1%
Line*
CAT. NO.
7.5 H x 14 W x 12 D in. 189 H x 353 W x 302 D mm
16 lb (7.3 kg)
550005
12 H x 12 W x 30 D in. 300 H x 300 W x 756 D mm
26 lb (11.8 kg)
550027
10 H x 10.5 W x 19 D in. 255 H x 267 W x 483 D mm
22 lb (10 kg)
550022
* 120 Vac, 50/60 Hz. To order 240 Va c, 50/60 Hz, add –47 to Cat. No. ** Divide by 5 switch for increased resolution
OPTIONAL ACCESSORIES Auxiliary Transformer An auxiliary transformer extends the ratio range of single-phase models to 329.99:1. Turns ratio is 100:1 and 200:1, and is accurate to within (0.1%.
The auxiliary transformer includes all the necessary cables for connection to the TTR
Calibration Reference Transformer Calibration reference transformers are available for both single- and three-phase test sets. They provide a reference standard for periodic calibration checks to document proof of calibration.
A Calibration Certificate of Turn Rat io Ac curacy traceable to the NIST is furnished with each calibration reference transformer, providing accuracies of (0.05%.
Item 3E
(2008/2009) Item
Description
12B
Dissolved Gas Analysis with Automatic Degassing unit According to IEC567 /ASTM 3612 type Top Toga GC.
13
Transformer Fault Indicator (Online Monitoring)
13A
Transformer monitoring unit type Hydrocal1002 complete with Hydrosoft software for data transfer and data administration
13B
Transformer monitoring unit type Hydrocal1003 as Hydrocal 1002 but with additional Water in oil/ moisture measurement.
4.Capacitance + Dissipation Factor (Tan
Item 4A
DELTA-2000 10 kV Automated Insulation Power Factor Test Set
DELTA-2000 10 kV Automated Insulation Power Factor Test Set
DESCRIPTION
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Extremely easy to use, without any extensive hardware or software setup
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Designed to work in high interference switchyards of up to 765 kV
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Built-in capability for storing, printing and downloading test results
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Rugged, portable design for field/shop shop use with automated control via the PowerDB™ software package
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Optional HV reference capacitors (100 pF, 1000 pF) with 2% dissipation factor, and a 10 nF TTR capacitor
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Optional Priority Access package offering exclusive services/support
The Priorit y Access program pro vides specific guaranteed
