Instrument Transformer Testing System
WHES Series
WHES Series Instrument Transformer Testing System is designed to measure various properties of electromagnetic current transformers and potential transformers (voltage transformers).
About the Product
WHES Series Instrument Transformer Testing System is designed to measure various properties of electromagnetic current transformers and potential transformers (voltage transformers). The choice of actual components for the system can be custom-configured according to the types of tests and measurements needed, which can include ratio-error tests, phase-error tests, CT volt-ampere characteristic tests, PT (VT) no-load-loss tests, DC resistance tests, open-circuit voltage tests, etc.
Featuring coarse adjustments and fine adjustments of the system power supply, this testing system can also perform open-circuit and closed-circuit demagnetizations of current transformers. Each system is equipped with overcurrent and overvoltage protection measures.
The overall structure, including the tabletop and cabinet design, of the testing system can be made or modified according to customer requirements.
Specifications
| Input Voltage | AC 220V ± 10%, 50/60Hz |
| Rated Capacity | 10 ~ 30kVA |
| Output Voltage | Coarse Adjustment & Fine Adjustment |
| CT Demagnetization Function | Open-Circuit & Closed-Circuit Demagnetization |
| Protection Functions | Overcurrent & Overvoltage Protection |
| Available Components to Include in Testing System | Digital Tester (Comparator) for Instrument Transformers, Burden for CT, Burden for PT (VT), etc. |
| Accuracy Class of the Reference CT & PT (VT) | 0.05%, 0.02%, 0.01 %, or Other |
| Primary Current Range of the Reference CT | 5 ~ 5000A, or Other |
| Primary Voltage Range of the Reference PT (VT) | 6kV (6/√3kV) ~ 35kV (35/√3kV), or Other |
| Secondary Voltage Range of the Reference PT (VT) | 100V (100/√3V), or Other |
| Frequency | 50Hz or 60Hz |
| Note: Technical data listed above are default values. Customer specifications can be requested. | |
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