3.8.8.3.3
Testing Distribution Relays with Trip, Reclosing and Sequence to Lockout
From the
MAIN MENU
Screen, select
RECLOSING RELAY
. The following screen should be
displayed.
Figure 85 Reclosing Relay Menu Screen
Connect relays’ trip contacts to
BINARY INPUT #1
, and the reclosing contacts to the Timer
BINARY INPUT #2
.
Connect the desired
BINARY OUTPUT
contacts to the relays’ breaker sensing input (52B and/or
52A Contacts). Later in the Relay Specifications Screen, set the BINARY OUTPUT #1 for
Normally Closed and BINARY OUTPUT #2 for Normally Open, using the Timer Setup button.
Initially the 52
A
contacts are open and 52
B
contacts are closed, when the breaker is closed.
During the test, the BINARY OUTPUT contacts will be toggled to simulate the breaker opening.
When the test set senses the reclosing contacts on the BINARY INPUT #2, the BINARY
OUTPUT contacts will toggle to simulate the breaker reclose, and will be repeated as
programmed in the Relay Specifications Screen.
Connect
I1
output terminals to the appropriate relay current input terminals. Some of the
distribution relays show a three-phase voltage input requirement. Most of these relays can be
fooled by using a single-phase voltage output in parallel with all three relay voltage inputs. If it is
desired to use a single-phase voltage, connect
V1
output terminals in parallel to the relay voltage
input terminals. In the Relay Specifications Screen touch the Voltage window and enter the
desired voltage value. Press the down arrow and select either single phase AC or DC. If three-
phase voltage is required, connect
V1, V2
and
V3
output terminals to the appropriate relay input
terminals. Using the down arrow select
3
∅
. The output voltage entered in the window will be
applied, with each voltage separated by 120 degrees (V2 lags V1 by 120 degrees, and V3 lags
V1 by 240 degrees).
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114
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