Table Of Contents; Introduction; Functional Characteristics - Eaton MPCV Series Instruction Booklet

Instructions for the Eaton Type
MPCV Network Protection Relay

Table of Contents

Description
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional Characteristics . . . . . . . . . . . . . . . . . . . . . . . 3
Trip Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Close Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Data Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pendant Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Instructions for the Type MPCV-D Relay . . . . . . . . . . . . 8
Instructions for the Type MPCV-22 Relay . . . . . . . . . . . 9
Instructions for the Type MPCV-GE Relay. . . . . . . . . . . 10
GE Relay Installation Notes . . . . . . . . . . . . . . . . . . . . . . 11
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 13
Communication System Using a Laptop . . . . . . . . . . . 17
Communication System . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installation Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PowerNet Reason Descriptions . . . . . . . . . . . . . . . . . . . 24
Relay Replacement Guidelines . . . . . . . . . . . . . . . . . . . 25
Relay Conversion Guidelines . . . . . . . . . . . . . . . . . . . . . 26
Curve Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 1 - Network Protector Rating . . . . . . . . . . . . . . . 5
Table 2 - Overvoltage Close Values . . . . . . . . . . . . . . . 8
Table 3 - Terminal Configurations MPCV-D . . . . . . . . 9
Table 4 - Terminal Configuration MPCV-GE . . . . . . . . 10
Table 5 - Trip Amperage as a Function of Percent . . . 15
Table 6 - Terminal Designation . . . . . . . . . . . . . . . . . . 16
Table 7 - PowerNet Reason Descriptions . . . . . . . . . . 24
Table 8 - MPCV-D Replacement Guide . . . . . . . . . . . . 25
Table 9 - MPCV-22 Replacement Guide . . . . . . . . . . . 25
Table 10 - MPCV-2X Replacement Guide . . . . . . . . . . 25
Table 11 - MPCV-GE Replacement Guide . . . . . . . . . . 25
Table 12 - MPCV-P Replacement Guide . . . . . . . . . . . 25
Figure 1 - MPCV Pendant Control Screen. . . . . . . . . . 5
Figure 2 - Digital Control Pendant . . . . . . . . . . . . . . . . 7
Figure 3 - Cutler-Hammer Relay . . . . . . . . . . . . . . . . . 9
Figure 4 - GE Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5 - Jumper Phase A and Phase C Resistors . . 10
Figure 6 - Top and Bottom Terminal Blocks . . . . . . . . 16
Figure 7 - PMCOM5 - mini-MINT . . . . . . . . . . . . . . . 17
Figure 8 - Daisy Chain . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 9 - Simple Tap . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10 - Complex Tab . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11 - Main Network . . . . . . . . . . . . . . . . . . . . . . 21
Figure 12 - Cable Star . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 13 - Cable Branch . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 14 - Straight Closing Curve . . . . . . . . . . . . . . . 27
Figure 15 - Circular Closing Curve . . . . . . . . . . . . . . . 28
Figure 16 - Reverse Trip, Sensitive Curve . . . . . . . . . . 29
Figure 17 - Watt-Trip with Non-Sensitive Range . . . . 30
Figure 18 - Watt-Var with Non-Sensitive Trip . . . . . . . 31
IB02402001E
Instruction for the
Cutler-Hammer Type MPCV
Network Protection Relay

Introduction

Page
The Type MPCV microprocessor controlled relays are
designed to replace the Type CN-33 electromechanical master
relay, the Type CNJ electromechanical phasing relay, and the
Type BN electromechanical desensitizing relay. The MPC
series relays use the same voltage and current inputs as do
the electromechanical equivalent. They also continually moni-
tor voltage across an open breaker and current through a
closed breaker, and perform the following functions.
A. The trip contact will close upon balanced fault conditions if
the positive sequence power flow is out of the network.
B. The close contact will close if the ensuing positive
sequence power will be into the network.
C. The trip contact will close upon the flow of reverse
magnetizing current of its associated transformer.
The MPCV series of relay will mount on standard existing
CMD, CM-22 and CM52 network protectors utilizing the
present system of low voltage or high voltage relay mounting
studs, without breaker wiring modification.
THE MPCV RELAYS ARE DESIGNED TO BE USED ON
NETWORK PROTECTORS WHICH HAVE BEEN WIRED FOR
216Y/125 VOLT OR 480Y/277 VOLT SERVICE USING RELAY
POTENTIAL TRANSFORMERS. THIS RELAY IS DESIGNED TO
OPERATE AT 125 VOLTS (LINE TO GROUND). DO NOT
ATTEMPT TO APPLY THIS RELAY ON ANY OTHER SYSTEM
VOLTAGE OR CONFIGURATION. SPECIAL STYLES ARE
AVAILABLE FOR 480-VOLT APPLICATION.
FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT
IN SEVERE PERSONAL INJURY, DEATH, AND/OR PRODUCT
OR PROPERTY DAMAGE.

Functional Characteristics

All measurements in the relay are made as net voltages and
currents, computed as the positive sequence voltage and cur-
rent (represented as V1X or l1), and the negative sequence
voltage and current (represented as V2X or l2). The network
positive and negative voltages sequence are denoted V1N
and V2N respectively. The other important voltage is the
phasing voltage, which is the difference between the trans-
former and network voltages, whose sequence components
are denoted V1P and V2P.
The V1N is defined as the reference phasor for all phase mea-
surements, and the normal phase-to-neutral voltage
(1 P.U.) is defined as 125 Vac rms. From this, the basis func-
tional requirements are graphically depicted in Figures 14
and 15.
For more information visit: www.EatonElectrical.com
Instruction Bulletin
Instruction Booklet IB02402001E
Effective: September 2004
WARNING
EaToN CoRPoRaTIoN www.eaton.com
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December 2010
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