Power Safety Platforms

Extra-high-voltage Switchgear Power Safety Platform

A disaster monitoring system that monitors the temperature, doors and emergencies of switchgear using self-powered sensors

01Why it is needed

In the LBS, MOF/PT and VCB/CT panels of extra-high-voltage switchgear, overheating of busbars, terminals and cables leads to fires.

Sensors must be attached inside panels where wiring is difficult to give advance warning of abnormal signs.

Switchgear busbar temperature sensor data displayed on screen
Up to 999 sensors registered, unique IDs with no radio interference
Text message service is optional after monitoring is installed
Protocol matching with existing solutions via the Signal Monitor's RS485

02System configuration

Temperature sensor80 ℃ alarm

Door sensorPanel opening

Emergency bellEmergency notification

100 m

RepeaterMWSR2-900

1 km

Signal MonitorMWSM-700

RS485

PC monitoringSensor location · detection history

Text alertsManager's mobile phone

Ranges are based on open field with no obstacles. Each added repeater extends the range by approx. 1 km.

LBS panel

Busbar fire detection 3 · switchboard door 1 · emergency bell 1

MOF / PT panel

Busbar fire detection 3 · switchboard door 1 · beacon light 1

VCB / CT panel

Terminal · cable fire detection 4 · switchboard door 1

Control room

Repeaters 2 · Signal Monitor (PC 485 link) 1 · monitoring program · text messages

03Products · specifications

Fixed-temperature Fire Detection Sensor — SMA busbar type

Model MWSF-100 (Busbar)

Size	W77 × D56 × H140 mm
Weight	200 g
Frequency	920.700 MHz (FSK)
Transmission range	approx. 100 m (open field)
Operating temperature	approx. 75 – 85 ℃ or above
Power	Self-powered (no battery)
Dust · water protection	IP57

Repeater

Model MWSR2-900

Size	W115 × D115 × H30 mm
Weight	167 g
Frequency	920.7 / 447.9 MHz (FSK)
Antenna	External antenna × 2
Tx/Rx range	approx. 1 km (open field)
Range extension	+approx. 1 km (open field)
Display	FND 3-digit, LED (Rx · Tx · Power)
Power	DC 12 V 1 A adapter

Signal Monitor

Model MWSM-700

Size	W258 × D107 × H34 mm
Weight	497 g
Frequency	920.7 / 447.9 MHz (FSK)
Antenna	External antenna × 2
Reception range	approx. 1 km (open field)
ID registration	max. 999
Signal storage	Up to 10 overlapping signals
Display	FND 5-digit LED
External terminals	RS-485, beacon light, speaker, power
Power	DC 12 V 1 A adapter

PC monitoring program

Model —

Operating environment	Runs on an on-site PC
Map	MAP layout (sensor location check)
Sensor display	Icon for each self-powered sensor
History management	Detection history saved
Protocol	RS485
Port	RS485 to USB cable

Text message (SMS) delivery

Model —

Operating environment	Internet-connected PC with the monitoring program installed
ID registration	Phone number registration
Message text	Edit · delete beyond the default text
History management	Text message history management
Protocol	Internet-based

04Case studies

Extra-high-voltage switchgear busbar fire detection

Fixed-temperature Fire Detection Sensors are attached to busbars, terminals and cables, and door sensors to panel doors, monitored via the Signal Monitor and monitoring program.