Sel 421 - Figure 2.38 Rear-Panel Receptacle Keying, SEL-421

U.2.38
SEL-421 Relay User’s Guide Date Code 20090715
Installation
Connection
Figure 2.38 Rear-Panel Receptacle Keying, SEL-421
Power Connections
The terminals labeled POWER on the rear panel (#Z29 and #Z30) must connect
to a power source that matches the power supply characteristics that your
SEL-421 specifies on the rear-panel serial number label. (See Power Supply
ABC123 ABC123
ABC 213 CAB B213 AC 123
ABC 213 CAB B123
A
C123
Key Inserts
(One Pair for Each
Screw Terminal Connector)
200-Addresses
Receptacles
100-Addresses
Receptacles
300-Addresses
Receptacles
Courtesy of NationalSwitchgear.com