Basler Electric BE3-47N - Manual (Page 2)

CALIBRATION
The calibration marks on the faceplate have a maximum
error of 10% and are provided only as guides. Proper
calibration requires using an accurate voltmeter in parallel
with the input signal. Use the following procedure to
calibrate your relay.
Unbalance
1. Adjust the UNBAL control fully clockwise and the
DELAY control fully counterclockwise.
2. Apply three-phase, nominal input voltage with the
proper phase sequence to the relay. The output relay
should energize.
3. Lower one phase of the applied voltage to the desired
trip level. Slowly adjust the UNBAL control
counterclockwise until the relay trips.
Delay
1. Set the DELAY control at the desired time setting.
2. Apply three-phase, nominal input voltage with the
proper phase sequence to the relay.
3. Step down one phase of the applied voltage below the
relay trip point. Using an appropriate timing device,
measure the time from when the voltage is reduced
until the relay trips.
4. Compare the measured time to the desired time delay
and adjust the DELAY control accordingly.
5. Repeat Steps 3 and 4 as required.
MAINTENANCE
BE3 relays are solid-state devices that require no
maintenance. In the event that your relay requires repair,
contact Basler Electric, Highland, IL, USA for return
authorization.
ORDERING INFORMATION
Figure 2 shows the BE3 phase balance relay style chart.
•
BE3-47N - Phase Balance
•
BE3-47N/27 - Phase Balance/Undervoltage
FIGURES
Figure 1. BE3-47N, BE3-47N/27 Phase Balance Relay Connections
Figure 2. BE3-47N, BE3-47N/27 Style Number Identification Chart
Publication
9320300990
Revision
D
Instructions
Date
06/14
Page
2 of 2