Sel 421 - Page 207

U.4.69
Date Code 20090715 User’s Guide SEL-421 Relay
Basic Relay Operations
Operating the Relay Inputs and Outputs
Figure 4.59 Control Input Pickup Level Settings in ACSELERATOR Quickset SEL-5030 Software
Step 7. Set the control input IN101 pickup threshold.
For this example, a 125 Vdc station battery is providing the
control voltage. Referring to Table 2.1 on page U.2.5, the
appropriate pickup voltage settings is 100 Vdc. Click the
mouse cursor (or press <Tab>) to highlight IN101P Main
Board Input 101 Assertion Level.
a. Delete the present setting by pressing <Delete>.
b. Type 100, and then click or <Tab> to another value.
The relay checks the new value and enters the value in
the
ACSELERATOR QuickSet database.
Figure 4.60 Control Input Pickup and Dropout Delay Settings in ACSELERATOR QuickSet
Courtesy of NationalSwitchgear.com