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Digital Tester (Comparator) for Instrument Transformers
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Digital Tester (Comparator) for Instrument Transformers

WHES-1Cx

Digital Tester (Comparator) for Instrument Transformers is designed for the testing of ratio error and phase displacement of current transformers and voltage transformers (potential transformers).

About the Product

Digital Tester (Comparator) for Instrument Transformers is designed for the testing of ratio error and phase displacement of current transformers and potential transformers (voltage transformers). High in accuracy and wide in its measuring range, this calibrator is easy to use and provides a wide range of testing current and testing voltage to satisfy various CT and PT (VT) testing requirements.

Specifications

ModelWHES-1Cx
Error MeasurementRatio Error & Phase Error
Rated Current5A, 1A
Rated Voltage100 ~ 230V
Multiplier1/√3, 1/3, 1, 1.5, 2
Accuracy Class±2%
Operation Range1% - 200% In / 20% - 200% Un
Frequency50Hz/60Hz
Ratio-Error Range±0.0001% ~ ±19.99% (3 Ranges: 0.1999%, 1.999%, 19.99%)
Minimum Resolution: 0.0001%.
Phase-Error Range0.01' ~ ±900' (3 Ranges: 9.00', 90.0', 900')
Minimum Resolution: 0.01'
Impedance Range0.001Ω~ 19.99Ω (2 Ranges: 1.999Ω, 19.99Ω)
Minimum Resolution: 0.001Ω
Admittance Range0.001ms ~ 19.99ms. (2 Ranges: 1.999ms, 19.99ms)
Minimum Resolution: 0.001 ms
Alarm FunctionSound & Light Alarms

Input Load
(Load Impedance)


On Secondary of Reference CT: ≈0.11Ω, COSθ≈1.0
On Secondary of CT Under Test: ≈0.003Ω, COSθ≈1.0
On Secondary of Reference PT (VT): ≈0.05VA (when U = 100V)

Communication InterfaceRS232 Serial Communication Interface
DisplayLCD
Power SupplyAC 220V±10%, 50Hz/60Hz
Power Consumption< 20VA
Note: Technical data listed above are default values. Customer specifications can be requested.


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