MV Motor Fire Pump Switch Gear and Control Panel
Nebras MV switch gear and controller type NPM/NFPA20/MV-SW has been designed in accordance with the latest requirements of NFPA20 standard for automatic, manual and emergency starting of MV motor driven pumps.
The components are installed in an enclosure having an ingress protection rated at IP: 42-55.
This controller has been certified by E.P.I.L laboratories.
Starting methods of this panel are as follows :
A. Automatic starting method
When pressure switch receives low pressure signal from pressure line, it sends a signal to the controller and therefore starts the E-Motor by method of D.O.L and by means of vacuum contactor.
B. Manual starting method
If E-Motor does not start automatically, the operator can start E-Motor manually by means of a push button.
C. Emergency starting method
If E-Motor does not start automatically and manually, the operator can start the E-Motor by means of the mechanical manual emergency starting system.
A. Power on signal light:
This signal light will be illuminated when the high voltage is connected and the power circuit is healthy.
B. Power failed signal light:
This signal light will be illuminated when the high voltage is disconnected or the power circuit has failed.
C. Pressure low signal light:
This signal light will be illuminated when the pressure of the line is low.
D. Pump running signal light:
This signal light will be illuminated when the E-Motor starts to run.
Remote Signal Contacts
These dry contacts are used for transferring remote signals to DCS.
These signals are as follows:
A. Power on
B. Power failed
C. Motor tripped
D. Pressure low
E. Pump running
F. Motor overload