Jlszw 10kv 5-1000A 10-80ka Outdoor Combined Metering Unit Combined Transformer Metering Box

This type of voltage and current combined transformer (measuring box) is used for AC 50Hz, rated voltage 20KV three-phase line, for voltage, current and energy measurement and relay protection. It is suitable for outdoor substations of urban power grids and rural power grids, and can also be used for various transformer power distribution stations in industrial and mining enterprises. The combined transformer is equipped with active and reactive watt-hour meters, which is called a high-voltage power metering box. This product can replace the oil-immersed combined transformer (metering box).

Ordering instructions:
1. Model, name and quantity of circuit breakers;
2. The rated voltage, rated current and rated short-circuit breaking current of the circuit breaker;
3. Circuit breaker shell material;
4. The operation mode of the operating mechanism (manual, electric, with remote control), the type and rating of the operating current;
5. Accuracy, transformation ratio, and quantity of current transformers; determine zero-sequence transformers, voltage transformers, etc.
6. The name and quantity of spare parts and spare parts;
7. If users have special requirements, please explain them when ordering.
Precautions:
1. When the primary current passes through the current transformer, the secondary winding is not allowed to open circuit, otherwise high voltage will be generated, which will affect the performance of the product.
2. The secondary winding of the voltage transformer is not allowed to be short-circuited. Otherwise it will burn the transformer.
3. The repeated power frequency withstand voltage test of the primary winding shall be performed at the specified test voltage.80% of the value.