Equipment for Japanese MarketOil-Immersed Type Earthed Voltage Transformer (EVT)
Earthed voltage transformers, which transform high voltage into low and easy-to-handle voltage, are used in connection with a protective device and supply meter.
Feature
- The main insulation medium of these products is electrical insulation oil. (The Fire Service Act is applied.) We can fabricate these products in conformance with JIS C 1731-2 and JEC-1201 as well as some foreign standards.
10-154 kV earthed voltage transformers
These transformers are mainly used to measure the voltages between the ground and an electrical circuit and between the ground and a neutral point in an electrical circuit, as well as to detect zero-phase voltage in the event of a grounding fault of a three-phase circuit.
JISC1731-2 JEC-1201 Frequency50,60Hz
Single-phase
| Model | Rated voltage（V） | Accuracy class (Rated burden) | |
|---|---|---|---|
| JEC-1201 | JIS C-1731-2 | ||
| EVO1-11 | 11000/√3 | 1P(50～200VA) | 0.5（50～200VA） 1.0（500VA） |
| EVO1-22 | 22000/√3 | ||
| EVO1-33 | 33000/√3 | ||
| EVO1-66 | 66000/√3 | ||
| EVO1-77 | 77000/√3 | ||
Three-phase
| Model | Rated voltage（V) | Accuracy class (Rated burden) | |
|---|---|---|---|
| JEC-1201 | JIS C-1731-2 | ||
| EVDO1-11 | 11000/√3 | 1P(50～200VA) | 0.5（50～200VA） 1.0（500VA） |
| EVDO1-22 | 22000/√3 | ||
| EVDO1-33 | 33000/√3 | ||
| EVDO1-66 | 66000/√3 | ||
| EVDO1-77 | 77000/√3 | ||
(1) The secondary voltage is 100/√3V V is standard.
(2) The tertiary voltage of 110/3 V, burden of 200 VA, is standard.
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