ABB CVQ Instruction Leaflet

Effective: August 1998
Supersedes I.L. 41-223.1B, Dated July 1998
( | ) Denotes Change Since Previous Issue
These instructions are to be used in conjunction with I.L. 41-223 and differs only as indicated for
Type CVQ Class 1E relay applications.
CAUTION
!
Before putting relays into service, remove all
blocking which may have been inserted for the
purpose of securing the parts during shipment.
Make sure that all moving parts operate freely.
Inspect the contacts to see that they are clean
and close properly. Operate the relay to check the
settings and electrical connections.
1.0 APPLICATION
These relays have been specially designed and
tested to establish their suitability for Class 1E appli-
cations in accordance with the ABB Power T&D Com-
pany program for Class 1E Qualification Testing as
detailed in bulletin STR-1.
"Class 1E" is the safety classification of the electric
equipment and systems in nuclear power generating
stations that are essential to emergency shutdown of
the reactor, containment isolation, cooling of the
reactor, and heat removal from the containment and
reactor, or otherwise are essential in preventing sig-
nificant release of radioactive material to the environ-
ment.
All possible contingencies which may arise during installation, operation or maintenance, and all
details and variations of this equipment do not purport to be covered by these instructions. If further
information is desired by purchaser regarding this particular installation, operation or maintenance
of this equipment, the local ABB Power T&D Company Inc. representative should be contacted.
Printed in U.S.A .
ABB Automation Inc.
Substation Automation and Protection Division
Coral Springs, FL 33065
Type CVQ Relay
(Class 1E Applications)
Relay Style
1339D96A01
1339D96A02
1339D96A03
2.0 CONSTRUCTION AND OPERATION
The Class 1E relay uses the same type wire for
interconnecting operating units as does the com-
mercial type relay. This wire is irradiated polyolefin
insulation and does not contain PVC. A special
slow-operate-slow-release telephone type relay is
used to provide greater security against malfunction
due to seismic vibration. See internal schematics
3526A50, 3528A01 and 3533A31. Also, the disc unit
contains a special shield covering the spring located
above the disc.
3.0 CHARACTERISTICS
The characteristics are the same as described in I.L.
41-223 except the T1 relay adds additional time delay
and a burden of 3.1 volt-amperes at 125 volts dc
nominal. Seismicly rated contacts are both opened
and closed T2 contacts and opened CV contacts.
Closed CV contacts are seismicly rated only when
the ICS contacts are allowed to seal around them.
Instruction Leaflet
41-223.1C
Internal Schematic
3526A50
3528A01
3533A31