Description ：

RWK-55 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-55 series is suitable for up to 35kV outdoor switchgear using, include: vacuum circuit breakers, oil circuit breakers and gas circuit breakers. RWK-55 intelligent controller is gathering with line protection, control, measurement and monitoring of voltage and current signals integrated automation and control devices outdoors.

RWK-55 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-55 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：

• Protection relay functions, Thermal Overload, Three-section of Overcurrent, Sensitive Earth Fault, Under/Over Voltage, Cold load pickup.

• Supervision functions: CT Supervision, VT Supervision.

• Control functions: Lockout, circuit-breaker control, Auto reclose.

• Monitoring Functions: Primary currents for Phases and Zero sequence current, Primary PT Voltage, Frequency, Binary Input/Output status, Trip circuit healthy/failure, Time and date, Fault records, Event records.

• Communication functions: Passing RS485/USB or RS232/USB port PC software, Or passing IEC60870-5-101 or IEC60870-5-104, DNP3.0 or Modbus RTU Communication protocol link to ‌SCADA system; realizable Events\Faults and Measurands viewing, executing remote command, Time synchronizing, Viewing and Changing Settings.

•  Data Storage functions: Event Records, Fault Records, Measurands.

•  Remote signaling remote measuring, remote controlling function can be customized address.

Technology parameters：

Device structure：

About customization：

The following optional functions are available: Power supply rated at 110V/60Hz,3 Voltage transform, 1 Zero phase sequence voltage sensor, cabinet heating defrosting device, 1 battery measurement, 1 battery activation management, GPRS communication module,1~2 signal indicators,1~4 protection pressure plates, the second voltage transformer, custom aviation socket signal definition.

For detailed customization, please contact the salesman.

What does the line protection switch controller do? 

A: It is mainly used to protect the line security. When the line is overloaded, short circuit and other abnormal conditions, the line protection switch controller can quickly detect these problems, and then automatically cut off the circuit, to prevent the line from being damaged by too much current, to avoid causing fire and other dangerous situations. 

How does it detect a line anomaly?

A: It has a sophisticated current detection device inside. When the current in the line exceeds the set safe value, whether it is due to overload caused by too many appliances or short circuit caused by line fault, the detection device can sense the change in the current and trigger the controller action. 

Is the line protection switch controller durable? 

A: Generally speaking, if it is a qualified product, it is more durable. The electronic components used are strictly screened, and the housing has good protection and can adapt to different environmental conditions, but it is also checked and maintained regularly to ensure that it works properly.