1. The 4 Mandatory Code Requirements for Fire Pump Control Panels Mandatory under GB 50974-2014
Chapter 11 of GB 50974-2014 sets 4 mandatory requirements for fire pump control panels:
| Code | Clause | Requirement |
|---|---|---|
| ① Dual power source transfer | 11.0.1 | Fire pumps must be fed from two independent power sources, with ATS transfer ≤ 30s |
| ② Mechanical emergency start | 11.0.12 | If the PLC fails, the contactor must be startable directly by mechanical means |
| ③ Inspection function | 11.0.18 | Automatic inspection once a week, with operating data logged and faults alarmed |
| ④ Start time | 11.0.3 | Fire pump from signal receipt to normal operation ≤ 30s |
These 4 items aremandatory checks at fire acceptance inspection. Miss any one of them and the fire acceptance inspection will not pass. Zhejiang Golden Unicorn fire pump panelsComplete package, with full acceptance documentation and support for coordination with the local fire authority.
2. How do you wire the "one duty, one standby" fire pump setup? Standard 4-component + interlock
Typical 1 duty + 1 standby scheme for a fire pump panel:
- Main pump circuit: breaker (QF1) → contactor (KM1) → thermal overload relay (FR1) → motor 1
- Standby pump circuit: breaker (QF2) → contactor (KM2) → thermal overload relay (FR2) → motor 2
- Interlock: mechanical interlock between KM1 and KM2 (prevents simultaneous start)
- Emergency mechanical start: a mechanical emergency start/stop button wired in parallel next to each contactor, bypassing the PLC
The fire pump'sdual power supply transferis handled outside the cabinet by an ATS cabinet; this cabinet only needs one power feed.
3. Mechanical emergency start: start the pump without relying on the PLC Mandatory under GB 50974 Clause 11.0.12
Thecritical roleof mechanical emergency start: if the PLC crashes, the program faults, or the control board burns out, firefighters canstart the contactor directly with a physical button, bypassing the PLC.
Wiring method:
- In the coil circuit of each contactor (KM1 / KM2),wire a normally open mechanical button in parallel
- Press the button → contactor coil energizes → contactor pulls in → motor starts
- Fully independent of the PLC and the control circuit
The mechanical emergency start buttonmust be mounted on the front of the cabinet door, red, latching type, marked "Fire Emergency Start" with a guard against accidental operation. Fire acceptance testing will try it on site — press the emergency button and the pump must start within 30s.
4. Inspection routine: weekly self-test with fault alarm GB 50974 Clause 11.0.18
The purpose of the inspection routine isto prevent "never runs in normal times, fails when it matters". The inspection logic in the PLC program:
- Timed start every 7 days:Main pump runs at low speed for 30 s → stops → standby pump runs at low speed for 30 s
- Operating data logging:Starting current / run time / fault codes, stored in the PLC or uploaded to the host system
- Fault alarm:If either pump fails to start or shows abnormal running current, an alarm is sent to the control room immediately
- Fire mode lockout:When a genuine fire signal is triggered, the inspection cycle stops automatically so the main pump can run at full speed
Golden Unicorn fire pump panelOptional 4G IoT module, which uploads inspection data to a cloud platform in real time for viewing on a mobile phone.
5. Factory photos: fire pump control panel, 3 images (shop floor photos)
FAQ FAQ
Does a fire pump control panel require CCCF certification?
The fire pump panel itselfdoes not require mandatory CCCF certification; however, the fire pump does require CCCF certification. Golden Unicorn pump panels hold original ISO 9001:2015 / CE (LVD+EMC) / IP65 test reports; CCCF certification for the fire pump itself can be provided by the pump manufacturer, while Golden Unicorn supplies the assembled control panel.
How is the 30 s fire pump start time tested?
On-site fire acceptance test: ① simulate a fire alarm signal ② start the fire pump ③ use a stopwatch to measure the total time from signal trigger to water discharge.Must be ≤ 30 s(GB 50974, Clause 11.0.3). Golden Unicorn runs a simulated test before shipment and issues a test report.
Will mechanical emergency start and automatic start conflict?
No, but they must be interlocked. Mechanical emergency start wires directly to the contactor coil; automatic start controls the contactor through the PLC. The two arein parallel, so the contactor pulls in when either path is energized. The mechanical emergency start button must havemechanical latching, staying engaged when pressed and resetting by rotation, to prevent accidental operation.
Must the inspection cycle run every day?
No, once a week is sufficient(GB 50974, Clause 11.0.18). During inspection, the main / standby pumps each run at low speed for 30 s, with no water supply interruption and no impact on fire protection function. However, during inspection,any fire alarm signal must immediately stop the inspection cycleand switch to fire mode.
What IP rating does a fire pump panel need?
Indoor IP30 / outdoor IP54 minimum. If installed in a damp basement, IP54 is recommended. Golden Unicorn supplies IP30 indoor as standard, with IP54 / IP65 outdoor available at additional cost.
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