Equipment for Japanese MarketGas-insulated 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 is SF6gas. We can fabricate these products in conformance with JIS C 1731-2 and JEC-1201 as well as some foreign standards.
60-500 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
Feature
As an option, a device that disconnects an EVT from the main circuit can be incorporated.
Single-phase
| Model | Rated voltage (V) | Accuracy class (Rated burden) | |
|---|---|---|---|
| JEC-1201 | JIS C-1731-2 | ||
| VGT4-66 | 66000/√3 | 1P(50～200VA) | 0.5（50～200VA） 1.0（500VA） |
| VGT4-77 | 77000/√3 | ||
| VGV4-110 | 110000/√3 | ||
| VGW4-154 | 154000/√3 | ||
| VGX4-275 | 275000/√3 | ||
| VGZ-550 | 550000/√3 | ||
Three-phase
| Model | Rated voltage(V) | Accuracy class (Rated burden) | ||
|---|---|---|---|---|
| JEC-1201 | JIS C-1731-2 | |||
| VDGT4-66 | 66000/√3 | 1P(50～500VA) | 0.5（50～200VA） 1.0（500VA） |
|
| VDGT4-77 | 77000/√3 | |||
| VDGV4-110 | 110000/√3 | |||
| VDGW4-154 | 154000/√3 | |||
(1) The standard secondary voltage is 100/√3V is standard.
(2) The tertiary voltage of 110/3 V,200VA is standard.
(3) The structure of the EVT is such that the neutral point is earthed.Be sure to earth the neutral point before use.
(4) For overseas standards,consult us separately