Description

RWK-LC overhead line protection switch intelligent controller is medium voltage overhead line grid monitoring unit, it can be equipped with RCW(RVB) type vacuum circuit breaker for achieve of automatic monitoring, fault analysis and event records.

Its given to us a safety power grid for cutting line fault and automatic recovery operation and power automation.

 RWK-LC series is suitable for up to 35kV outdoor switchgear using, include: vacuum circuit breakers, oil circuit breakers and gas circuit breakers. RWK-LC intelligent controller is gathering with line protection, control, measurement and monitoring of voltage and current signals integrated automation and control devices outdoors.

RWK is an automatic management unit for single way/multi ways/ring network/two power sourcing, provided with all voltage and current signals and all functions. RWK-LC column switch intelligent controller supports: Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, power line carrier, RS232/485, RJ45 and other forms of communication, and can access other station premises equipment (such as TTU, FTU, DTU, etc.).

Main function introduction

1. Protection relay functions:

1) 49 Thermal Overload,

2) 50 Three-section of Overcurrent (Ph.OC) ,

3) 50G/N/SEF Sensitive Earth Fault (SEF),

4) 27/59 Under/Over Voltage (Ph.OV/Ph.UV),

5) 51C Cold load pickup (Cold load).

2. Supervision functions: 

1) 60CTS CT Supervision,

2) 60VTS VT Supervision,

3. Control functions:

1) 86 Lockout,

2) 79 Auto reclose,.

3) circuit-breaker control,

4. Monitoring Functions:

1) Primary currents for Phases and Zero sequence current,

2) Primary PT Voltage,

3) Frequency,

4) Binary Input/Output status,

5) Trip circuit healthy/failure,

6) Time and date, 

7) Fault records,

8) Event records.

5. Communication functions:

a.  Communication interface: RS485X1,RJ45X1

b. Communication protocol: IEC60870-5-101; IEC60870-5-104; DNP3.0;  Modbus-RTU

c. PC software: RWK381HB-V2.1.3,The address of the information body can be edited and queried by PC software,

d. SCADA system: SCADA systems that support the four protocols shown in "b.”.

6. Data Storage functions:

1) Event Records,

2) Fault Records，

3) Measurands.

7. remote signaling remote measuring, remote controlling function can be customized address.

Technology parameters

Device structure

About customization

The following optional functions are available: GPRS communication module. Upgrade SMS Function.

For detailed customization, please contact the salesman.

Q: What is the function of Microcomputer protection device?

A: The microcomputer protection device is mainly used to protect the electrical equipment in the switchgear. It can monitor electrical parameters such as current and voltage in real time. When there is overcurrent, overvoltage, undervoltage and other fault conditions, the rapid response, such as tripping to cut off the circuit, to prevent equipment damage, to ensure the safe and stable operation of the power system.

Q: What are its advantages over traditional protection devices?

A: The precision of The microcomputer protection device is higher, and the electric quantity can be measured accurately. It has the function of self-diagnosis, can find its own fault in time for maintenance. Moreover, the protection parameters can be set flexibly to adapt to different power system requirements. It can also realize remote communication and facilitate remote monitoring and operation, which is difficult to do with traditional protection devices.