Eaton MPCV Series User Manual

16
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 16 Effective: September 2004
Instruction for the
Cutler-Hammer Type MPCV
Network Protection Relay
MPCV-P Relay
Description
The MPCV-P is typically used on a MV switchgear/
substation to control the trip and close operation of the
breaker. This relay has two 9-pin terminal blocks for wiring
connections instead of the standard pin-type connector used
in the “D”, “22” and CM52 models. The three CT connec-
tions are isolated from any other terminals. This will give
the user a flexibility of connecting the CTs, grounded wye
or energized configuration.
CT Terminals
Due to the nature of the CT configuration, wires into or
from the CT may be connected to a device or devices that
an incorrect connection can cause damage to those device or
devices, the relay, an injury or a fire. Make sure that
each designated wire is connected to the correct terminal.
Re-check the CT connections after installing the relay and
before energizing the breaker.
When operating the breaker without the relay, terminate each
pair of the disconnected CT wires by shorting the ends and
securing this from any other energized wires. Use the short-
ing blocks to terminate the CT wires if equipped. This will
prevent dangerous high voltage across the disconnected CT
wires that can cause damage to any connected device
or devices, an injury or a fire.
Table 6. Terminal Designation
Figure 6. Top and Bottom Terminal Blocks
Term. Ref. Description
1
2
3
COM
TR
CL
Common of Trip and Close contacts
Trip Contact
Close Contact
4
5
6
—
GND
VAN
No connection
Ground
A-phase network voltage
7
8
9
VAT
IA
IAX
A-phase transformer voltage
A-phase CT -
A-phase CT +
10
11
12
ICX
IC
VCT
C-phase CT +
C-phase CT -
C-phase transformer voltage
13
14
15
VCN
IBX
IB
C-phase network voltage
B-phase CT +
B-phase CT -
16
17
18
—
VBT
VBN
No connection
B-phase transformer voltage
B-phase network voltage

Eaton MPCV Series Specifications

General

Brand	Eaton
Model	MPCV Series
Category	Relays
Language	English