Power Safety Platforms

Distribution Panel Power Safety Platform

A disaster monitoring system that monitors emergency, fire and door information in extra-high-voltage switchgear using self-powered sensors

01Why it is needed

Unmanned substations supplying subway power are installed every two subway stations, so disaster and fire response measures are needed.

A fixed-temperature fire detection and monitoring system that installs wirelessly and is easy to maintain can be used.

Emergency, fire and door sensor data from extra-high-voltage switchgear 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

Emergency bellEmergency notification

Door sensorPanel opening

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.

03Products · specifications

Fixed-temperature Fire Detection Sensor — SMA standard type

Model MWSF-100

Size	W77 × D56 × H47.7 mm
Weight	82 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

On-site verification — distribution panels

Sensors were installed and tested at cable joints in distribution panels. On a temperature rise above 75 ℃, they send an RF signal by self-powered generation, and PC monitoring and text messages to staff via the receiver's RS-485 link were verified.