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Instruction Booklet IB02402001E
December 2010
Instructions for the Eaton Type
MPCV Network Protection Relay
EATON CORPORATION www.eaton.com
For more information visit: www.EatonElectrical.com IB02402001E
Instruction Bulletin
Page 12 Effective: September 2004
Instruction for the
Cutler-Hammer Type MPCV
Network Protection Relay
MG14 — 125/216 V with Time Delay
1. For delayed sensitive operation using electromechanical
relays (Type CHN, CHL) add “TD” device and jumpers to
“OR” device. Delayed sensitive function is incorporated
within MPCV Relay. When applying MPCV Relay with
delayed sensitive function, remove external “TD” and
“OR” devices and add jumpers between 17 – 18,
27 – 28, 37 – 38 and 41 – 45.
2. The MPCV Relay is housed in one case and is received
into the master relay (CHN) connector. No connections to
phasing relay (CHL) plug is necessary except for a jumper
across terminals 1 and 2 (wire No. 6 – 6A). Lifting wire
6A and attaching to terminal wire 6 can accomplish this.
All field units previously having Type CHN – CHL relays
also require the addition of a wire from master relay plug
terminal 4 to ground.
MG14 — 277/480 V with Time Delay
1. For delayed sensitive operation using electromechanical
relays (Type CHN, CHL) add “TD” device and jumpers to
“OR” device. Delayed sensitive function is incorporated
within MPCV Relay. When applying MPCV Relay with
delayed sensitive function, remove external “TD” and
“OR” devices and add jumpers between 17 – 18,
27 – 28, 37 – 38 and 41 – 45.
2. The MPCV Relay is housed in one case and is received
into the master relay (CHN) connector. No connections to
phasing relay (CHL) plug is necessary except for a jumper
across terminals 1 and 2 (wire No. 6 – 6A). Lifting wire
6A and attaching to terminal wire 6 can accomplish this.
All field units previously having Type CHN – CHL relays
also require the addition of a wire from master relay plug
terminal 4 to ground.
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