Use : To protect the protection systems within a power plant/transformer station.

- Digital Protection Relay base on Real-Time Operation

- Detect Fault Signal by CT with Communication

- Measurement Method by Removing Noise Signal

- Possible to Select Fault Detection Method in Each Channel

- Possible to Extend and Select Channels

- Monitoring and Control Function by Communication Interface

Product

The product has alarm output function per each channel & fault record function in case grounding fault is occurred, as it is always monitoring the leakage current values in DC power supply line (P/N phase) at the power plant or the substation through CT with communication.

Features

1. Digital Protection Relay    base on Real-Time    Operation	- Adopt 32bit digital signal processor
2. Detect Fault Signal by CT    with Communication	- Use RS-485 communication between DGPS to DCT - Detective current range: 1~12mA, Accuracy: ±2%
3. Measurement Method by    Removing Noise Signal	- Adopt measurement method which removes noise signal by learning    in advance
4. Possible to Select Fault    Detection Method in Each    Channel	- Absolute method, Increment method
5. Possible to Extend and    Select Channels	- Possible to select channel number from 30ea to 60ea
6. Monitoring and Control    Function by    Communication Interface	- Local: RS-232C port - Remote: RS-485 port(Possible to extend DGPS up to 10ea)

Main functions

1. Protection metering functions

- Leakage current detection

2. Metering function

- Leakage current in each channel(mA)

3. Communication function

- Front : RS232C, Rear: RS485

Specification

Control Power Source		DC 125V ±20%, 60Hz
Rated	Voltage	AC 5A
Input Contact	Voltage	1ea(DC line voltage)
	Digital	2ea(SCADA Clear, Spare)
Output Contact	Signal Generator	AC 30~65V, 27.5Hz
	Alarm	4ea('a' contact×3ea, ‘1a1b’ contact×1ea)
Communication	Front	RS-232C
	Rear	RS-485×6ea
Outer Case	Material	Steel
	Size	400×191×110(mm)