Application scope

The HL-600 self powered microcomputer comprehensive protection and measurement device is a high-performance protection and measurement device developed to meet the needs of power system development and the market. It integrates measurement, metering, and control, and is suitable for small current grounding systems with voltage levels below 10KV. Can be used as a routine protection for power lines and plant transformers. The fully sealed small structure can be directly installed on low-voltage switchgear (PC cabinet or MCC), and its performance and technology are at the advanced level in China.

main features

·Adopting advanced 32-bit embedded ARM processors.

·Humanized human-machine interface, simple and intuitive operation.

·SOE and self-test report for power outage maintenance.

·Complete software and hardware self checking functions, and a second level watchdog software and hardware redundancy design with strong anti-interference capabilities.

·The switch input and relay output can be customized.

·Powerful vectorization calculation method.

·Adopting a graphic LCD display (128x64) with full Chinese language display.

·Embedded panel structure design, fully enclosed thin metal chassis. The device is small in size, light in weight, and easy to install, suitable for installation in compact switch panels, distribution boxes, and other situations.

·Surface mount technology, important components such as power modules, transformers, relays, LCD displays, wiring terminals, etc., all use mature products from well-known domestic and foreign enterprises to ensure that the average time between failures of the device is greater than 100000 hours.

Protection function

1.　　 current quick-break protection

2.　　 Time limited quick break protection

3.　　 Overcurrent protection

4.　　 Overload protection (timed limit, inverse time limit)

5.　　 Zero sequence overcurrent protection

6.　　 CT disconnection alarm

7.　　 Control circuit disconnection detection

8.　　 non-electricity protection

9.　　 Device fault self check

Measurement and control function

1.　　 Electricity measurement: three-phase current, zero sequence current

2.　　 8-channel switch quantity acquisition

3.　　 5-way relay output

4.　　 64 fault records kept during power failure

5.　　 Normal circuit breaker opening and closing