ABB-REX521GHHPSH07G

ABB-REX521GHHPSH07G is a feeder terminal power protection device.The following is a detailed introduction to it:

1.Basic information

Product model:REX521GHHPSH07G

Brand:ABB

ABB-REX521GHHPSH07G

2.Technical specifications

Working voltage:10~35 V DC

No-load current(maximum):40 mA

Insulation withstand voltage:500 V

Inner side length:125 mm

Casing size:144 x 155 x 12 mm

Casing material:aluminum(black,anodized)

Protection level:IP 67(some materials mention IP68,but IP67 is common and official data,and the official data should be used as the standard)

Switching frequency:2000 Hz

Working environment temperature:-10~+60°C

3.Product function

REX521GHHPSH07G feeder protection and control device is an important protection device in the power system.Its main function is to quickly cut off the fault and protect the stable operation of the power system when a short circuit,ground fault or other abnormal situation occurs in the feeder.

It can sense abnormal current and voltage signals in the power system and compare them with the pre-set fault protection conditions.When a fault is detected,the fault link can be quickly cut off to prevent the fault from spreading to the power grid.

The REX521 series device provides comprehensive power protection for the power system,such as phase overcurrent,grounding,overvoltage,low voltage,motor protection and frequency protection.

4.Applications

ABB-REX521GHHPSH07G

The REX521GHHPSH07G device is commonly used in the power industry,especially for relay protection of 220kv and below high-voltage transmission lines.

5.Use and Maintenance

When using ABB-REX521GHHPSH07G,it is necessary to strictly follow the operating manual to avoid equipment damage or power accidents caused by misoperation.

Regularly perform maintenance and inspection on the equipment to ensure that it is in good working condition.

6.Precautions

Before operating the ABB comprehensive protection REX521(including the REX521GHHPSH07G model),you must check the name of the equipment to prevent the wrong interval and misoperation of protection.

When the tester is working in the substation or on-site,he is not allowed to move the switch operating handle,trolley switch,grounding button alarm,alarm bell,reset button,tripping pressure plate,insurance,voltage switching switch,etc.If the above equipment needs to be operated for work,it must be allowed by the relevant operating personnel and operated under the supervision of the operating personnel.

In summary,ABB-REX521GHHPSH07G is a feeder terminal power protection device with comprehensive functions and reliable performance,which is suitable for high-voltage transmission line protection in the power industry.When using it,the operating specifications and maintenance requirements should be strictly followed to ensure its long-term stable operation.

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