VSPLC Start Up Device (REQUIRED by NFPA with engine higher than 200kW）
Due to the pump drive engine always start engine with water pump connected, which have large torque on the engine, so NFPA20 have clearly requirement for VSPLC start up device of the engine higher than 200kW, which start the engine by 15 seconds soft start, to lower down the harms on the engine caused by the quick start up, so A8: VSPLC Start Up Device is required by NFPA20 standard.
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Why is 15 seconds a mandatory requirement in NFPA20?
1.Address the unique challenges of direct pump-engine connection
Fire pumps are directly connected to engines, generating significant torque (pump inertia + water system resistance) at the moment of startup.Traditional direct startup causes severe mechanical impact on the engine, shortening its service life.
2. Scientific basis for the 15-second requirement
Tests have shown that 15 seconds is the optimal time to balance "startup smoothness" and "response speed."It not only limits the starting current to a safe range (1.5-2.5 times the rated current) but also avoids delaying fire protection water supply.This duration completely eliminates water hammer effect, protecting the piping system and valves.
3.Explicit requirements in NFPA20
For fire pump engines with power greater than 200kW, NFPA20 mandatorily requires the use of VSPLC soft start with a startup time of not less than 15 seconds.The purpose is to protect the engine from startup impact caused by high torque loads of the fire pump, ensuring long-term reliability.
Optional Components
This list including all Series of NFPA20 Components.
Click here to find pump engines by type (Fuel System & Engine Speed).
Spring Starter Motor
Spring Starter Motor (Required by NFPA) Spring Starter Motor — Provides rotational energy for diesel engine starting. Pure mechanical energy storage concentrates released human-generated energy to propel the engine to starting speed.Power Loss Control Unit— Provides...
Cardan Shaft
Cardan Shaft (Required by NFPA) The cross-type cardan shaft utilizes its structural characteristics to enable two shafts that are not on the same axis, have a large angular misalignment, or have significant axial movement to operate continuously at constant angular...
Spark Arrester
Spark Arrester (Requied by NFPA) After long-term use of the engine, a large number of carbon particles accumulated in the exhaust pipe fall off and encounter high temperature gas, which will burn and produce sparks flying out of the exhaust pipe. If there is...
Diesel Engine Fire Pump Drivers
PumpMac Diesel Engine Fire Pump Drivers Diesel Engine Fire Pump Drivers are composed of diesel engine controller SY-DEC-F010, water pump coordination module SY-WPC-F090, information display module SY-DCP-F070 and other relevant command switches and buttons. They are...
Emergency Engine Stop Device
Emergency Engine Stop Device (Requied by NFPA) The fire pump emergency engine stop device is the last line of defense for fire safety, and its practical application cases cover three core dimensions: equipment protection, personnel safety, and system reliability. From...
Fire Engine Monitor
Fire Engine Monitor (Requied by NFPA) When the fire-fighting pump system need to work, the environment might have lot of smoke which make it difficult for rescue team to read anything, so NFPA20 standard have clearly requirement on the easy access of engine running...
Water Heater
Water Heater (Requied by NFPA) To make sure engine start up very fast at any working environment, have to make sure the coolant water keep at a reasonable temperature, its required to maintain water temperature at 49 degrees (+-5 degrees), So we have to add the A7:...
Over Speed Protection Device
Over Speed Protection Device (Requied by NFPA) Due to the engine overspeed can caused huge damages to engine itself, sometimes the parts inside of engine can be damaged and break out from engine block, can caused people injured. So NFPA20 standard have clearly...
Two-ear Flywheel Housing
Two Ear Flywheel Housing (Requied by NFPA) To make sure engine maintain good condition, in NFPA20 standard required to start up the engine with NO FLOW, which mainly to rotate the engine to protect the crankshaft and camshaft of engine to aviod the harms from the same...
Engine Starting System
Engine Strating System (Requied by NFPA) When the automatic control circuit fails and the storage battery of the main circuit and the starting motor are in good condition, Battery Contactors can be used to start the diesel engine fire pump mechanically (directly...
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