Description

RVR-3 type feeder automatic step voltage regulator

The RVR-3 type feeder automatic step voltage regulator is actually a three phase oil immersed auto-transformer with SVR controller and gathering sampling of voltage ¤t signal, on load tap charger controlling device to achieve gird more efficient from adjust the load character by increase and decrease the voltage.

So This RVR is equivalent to a transformer equipped with on load tap charger with SVR controller sampling voltage and current data and on load tap charger steps from current transformer and voltage transformer and limit switches.- The RVR-3 type feeder automatic step voltage regulator is actually a three phase oil immersed auto-transformer with SVR controller and gathering sampling of voltage ¤t signal, on load tap charger controlling device to achieve gird more efficient from adjust the load character by increase and decrease the voltage.

Normal Operating environment of Three phase step voltage regulator

1. Below an altitude of 2000m
2. Ambient temperature: Max. temperature is +40℃and the min. temperature is -25℃
3. Outdoor wind speed shall not exceed 35m/s
4. Pollution grade: Class II
5. Earthquake horizontal acceleration is not greater than 3m/s2, the vertical acceleration is not greater than 1.5m/ s2, and the safety factor is more than 1.67.

Electrical Schematic of Three phase step voltage regulator

Three phase step voltage regulator

Technical Parameter of Three phase step voltage regulator

Item	Parameter
Rated voltage	Under 6.9kV	10kV up to 22kV	Under 35kV
Rated capacity	Less than 12500kVA	Less than 4000kVA	Less than 24000kVA
No of phases		Three phase
Cooling method	ONAN
Vector group	Yao
Steps	7/9/16* steps
Mechanical life	1000,000 times
Electrical life	50,000times
Voltage scope	20%, 30%, 40%