ABB 41-331.21 Manual
ABB Automation Inc.
Substation Automation and Protection Division
Coral Springs, FL 33065
Instruction Leaflet
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.
41-331.21
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, and operate the relay to
check the setting and electrical connection
Effective: May 1980
NEW INFORMATION
Type CA Percentage Differential
Relay for Generator Protection
For Class 1E Applications
41-331.21 Type CA Percentage Differential Relay For Generator Protection
For Class 1E applications
2
Type CA Percentage Differential Relay For Generator Protection 41-331.21
Class 1E applications
3
41-331.21 Type CA Percentage Differential Relay For Generator Protection
For Class 1E applications
4
Type CA Percentage Differential Relay For Generator Protection 41-331.21
Class 1E applications
5
41-331.21 Type CA Percentage Differential Relay For Generator Protection
For Class 1E applications
6
Type CA Percentage Differential Relay For Generator Protection 41-331.21
Class 1E applications
7
41-331.21 Type CA Percentage Differential Relay For Generator Protection
For Class 1E applications
8
Type CA Percentage Differential Relay For Generator Protection 41-331.21
Class 1E applications
9
41-331.21 Type CA Percentage Differential Relay For Generator Protection
For Class 1E applications
10
Reserved for Notes
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