Mody Pumps MS 6202 - Manual (Page 6)

MOTOR PROTECTION
IT IS ESSENTIAL THAT THE PUMP BE USED WITH A STARTER AND PREFERABLY A PANEL
BOARD. PANEL BOARDS INCORPORATING ALL PROTECTIVE DEVICES ARE AVAILABLE WITH US.
THE FULL LOAD AMPERE RATINGS OF THE TWO MODELS ARE AS PER TABLE BELOW. THE
OVERLOAD RELAY IN THE STARTER SHOULD CHOSEN ACCORDINGLY AND AMPERES SET AT THE
FULL LOAD SETTING FOR THE PARTICULAR MODEL OF THE PUMP. (DETAILS BELOW ARE FOR
230/460 VOLT PUMPS. CHECK FULL LOAD AMPERES FOR DIFFERENT VOLTAGES ON PUMP NAME
PLATE)
MODEL FULL LOAD AMPERES .
MS 6152 20 AMPS @ 460V
MS 6202 28 AMPS @ 460V
IMPORTANT.
THE PUMP IS SUPPLIED WITH A FOUR CORE CABLE AND THE FUNCTION OF THE SAME IS AS
UNDER:
• RED/YELLOW(WHITE)/BLUE(BLACK) ARE THE POWER CORES.
• GREEN CORE IS FOR EARTHING.
• IN THE EVENT THERMAL OVERLOAD PROTECTION IS REQUIRED A SIX CORE CABLE WILL
BE SUPPLIED OR A TRAILING CABLE WILL BE USED.
THREE THERMAL SWITCHES ARE EMBEDDED IN THE MOTOR WINDING OF WHICH TWO ARE
CONNECTED IN SERIES. THESE ARE CONNECTED TO THE WHITE CORES OF THE CABLE. THE
WHITE CORES OF THE CABLE ARE TO BE CONNECTED IN SERIES WITH THE CONTACTOR COIL
OF THE STARTER. THIS IS MOST IMPORTANT.
IN THE EVENT OF OVERHEATING OF THE STATOR WINDING FOR ANY REASON, THE EMBEDDED
THERMAL SWITCHES WILL OPEN, CAUSING THE STARTER COIL TO DROP OUT AND ISOLATE
THE PUMP UNIT FROM THE MAINS. THESE SWITCHES DO NOT PROVIDE ANY PROTECTION IN
THE CASE OF A SHORT CIRCUIT, AND ADEQUATE H.R.C. FUSES SHOULD BE USED FOR SHORT
CIRCUIT PROTECTION.