Fire detection for cable trays and switchgear with self-powered fire detection sensors (Innoplatec) · Field Cases

Site: Cable tray manufacturing plant (Innoplatec)

Self-powered fire detection sensors were mounted directly on cable trays and on the busbars of the switchgear in a building, so overheating is detected before a fire starts.

1. Purpose

A power-free fire detection system using self-powered sensors.
The cable tray manufacturer and the switchgear in the building lacked an adequate disaster prevention system.
A disaster and fire response measure was needed for the workplace.
A fire management system was needed for the switchgear rooms, including the cable trays in use in the plant.
Adding signal repeaters extends the transmission range of the self-powered sensors.

2. Benefits

Prevents fires and explosions caused by cable heating: heat is detected earlier than smoke, allowing early response.
Prevents sudden outages and line stoppages and supports planned maintenance.
Cable trays have blind spots where detectors are hard to install: self-powered sensors mounted in close contact remove the blind spots.
Early detection of busbar overheating and early response before a fire occurs.

3. System configuration

Self-powered fire detection sensor — The sensor detects heat, generates its own power and sends an RF signal
Signal Monitor (receiver) — Shows a unique number for each signal; linked to the PC via RS485
PC monitoring — Fire detection monitoring and alarms for each sensor

4. Product specifications

Self-powered Fixed-temperature Fire Detection Sensor — SMA standard type (MWSF-100)

Size: W77 × D56 × H47.7 mm
Frequency: 920.700 MHz (FSK)
Antenna: Built-in antenna
Transmission range: Approx. 100 m (open field)
Power: Self-powered (no battery)
Dust / water protection: IP57 (water-resistant for everyday use)

Self-powered Fixed-temperature Fire Detection Sensor — SMA special type

Size: W77 × D56 × H165 mm
Frequency: 920.700 MHz (FSK)
Antenna: Built-in antenna
Transmission range: Approx. 100 m (open field)
Power: Self-powered (no battery)
Dust / water protection: IP57 (water-resistant for everyday use)

Signal Monitor (MWSM-700)

Size: W258 × D107 × H34 mm
Weight: 497 g
Frequency: 920.7 / 447.9 MHz (FSK)
Antenna: External antennas × 2
Transmission / reception range: Approx. 1 km (open field)
ID registration: Up to 999
Display: FND 5-digit, LED
External terminals: RS-485, warning light, speaker, power
Power: DC 12 V, 1 A adapter

5. Installation photos

▶ Fire detection sensors installed on cable trays

▶ Busbar fire detection installed in the switchgear of a building

Contact

MPIA Co., Ltd. · Tel. +82-32-666-8193 (8191) · Weekdays 09:00 – 18:00 (KST)
mpia@mpiatek.com · www.mpiatek.com