Model: REX521GHHPSH51G
Category: Protective relays
Warranty: 1 year
Maximum system voltage 250 V AC/DC
Continuous current carrying capacity 5 A
0.5 second current carrying capacity 30 A
3.0 seconds current carrying capacity 15 A
Dc 48/110/220 V, control loop time constant 5 A/3 A/1A

Power supply model PSS_87H PS_87Lhttps://www.gsplcdcs.com/product-category/abb/
(REX521xxHxx) (REX521xxLxx)
Operating range, DC 80… 265 V, 18… 265 V
(DI9 18… 265 V)
Input voltage, DC 110/125/220 V 24/48/60/110/
(DI9 24/48/60 V) 125/220 V
Current consumption about 2… 25 mA
Power consumption/input < 0.8W

The protective relay adopts multi-processor technology to achieve its high performance. Digital signal processing chip (DSP) combined with high-performance CPU to improve the measurement accuracy of the relay and speed up the protection response. The man-machine interface (the LCD on the relay panel and the interface of the background setting tool software) provides multiple images and detailed help information for easy use. Modern technology is used extensively in both software and hardware of relays.
The relay is a member of ABB’s family of substation automation products and has been updated in terms of functionality and flexibility, resulting from the application of the latest technologies in the electronics and electrical field.

REX521GHHPSH51G is widely used in transmission and distribution networks for protection, control and monitoring, and can be used for neutral ground, small resistance ground, neutral ungrounded and resonant ground networks of different voltage levels. The device is suitable for both radiating network and ring network, and can be used for single-ended power supply system or multi-ended power supply line.

REX 521REX521GHHPSH51G ground system and resonant ground system, single bus outlet overcurrent and ground protection. The REX 521 B02 is standard and can be used as overcurrent protection, ground protection and automatic reclosing for single bus outlets in neutral ungrounded, neutral direct grounded, resistance grounded and resonant grounded systems.