Datasheet

Maintenance Bypass Panel 60kW /
Symmetra
®
PX 10 - 40 kW, 400V
990-1277
Maintenance Bypass Panel 60kW /
Symmetra
®
PX 10 - 40 kW, 400V
990-1277
Maintenance Bypass 60kW /
Symmetra
®
PX 10 - 40 kW, 400V
990-1277
8
Input/Output Wiring
This procedure will ensure correct wiring of Maintenance Bypass Panel

1 Ensure that both the DC Breaker and System Enable Switch are in the “OFF” or “STAND-BY” position.

2 Torque terminal screws to 1.6-1.8Nm, and terminal bolts to 6Nm. Verify wires in
terminal block X010. Wires 1-10 to be connected to equipment interface 1-10.

3 Apply power to system input of Maintenance Bypass Panel and measure voltage at input terminal
block (X001). Measure and record voltages below between
L1 and Neutral: __________ L2 and Neutral: __________ L3 and Neutral: __________

4 Ensure that phase rotation is correct.
Measured voltage must be 230 +/- 10%. If not, STOP! Verify correct wiring from the
power source to the input wiring connections. Repeat step 1.

5 Ensure that wiring is correct.

6 Switch on Q001, Q003 and Q002

7 Measure voltage between input and output points on the Symmetra PX.
L1 input & L1 output: ________ L2 input & L2 output ________ L3 input & L3 output ________
Measured voltage must be 0 Volt + /-2 Volt. If not, STOP! Verify correct wiring from
Maintenance Bypass Panel to Symmetra PX to Maintenance Bypass Panel.

8 Successful completion of steps 1 through 7 indicates that the Maintenance Bypass Panel wiring is
correctly installed and functioning correctly. Turn off breakers and switches and shut down input power
to the system. Reinstall all wiring access panels on the Symmetra PX.
Wiring completed by:
Name: _________________________________________________ Date: _____________
9
How to place the UPS into maintenance
bypass operation
When servicing the UPS, place the UPS into maintenance bypass operation. When the UPS is
operating in maintenance bypass, power flows directly from the utility to the Service Bypass
Panel and out to the load equipment.
1) Command the UPS into static bypass operation through the UPS display interface:
a) Press the ESC key at the Monitoring screen to open the Main menu.
b) Select Control on the Main menu and press the ENTER key.
c) Select UPS into Bypass on the Control menu and press the ENTER key.
d) Confirm the selection on the next screen: Select Yes, UPS into Bypass and press the ENTER
key. The BYPASS LED will illuminate and the display will show the following to screens:
The H3 LED above the Q3 breaker should illuminate, indicating that it is safe to oper-
ate the
Q3 breaker.
2) Close (turn ON) the Q3 breaker on the Maintenance Bypass Panel.
The H2 LED above the Q2 breaker should illuminate indicating that it is safe
to operate the Q2 breaker.
3) Open (turn OFF) the Q2 breaker on the Service Bypass Panel.
4) Set the Symmetra PX UPS System Enable switch and DC Disconnect breaker to the STANDBY
position.
5) If applicable, set the XR Battery Enclosure DC Disconnect breaker to the STANDBY position.
6) Open (turn OFF) the Q1 breaker on the Service Bypass Panel.
When steps 1-6 have been completed, the UPS will be in maintenance bypass
operation.
Control
Status
Setup
Accessories
Logging
Display
Diags
Help
UPS has been
commanded to go
into Bypass...
UPS load is in Bypass
Press any key...
Service Bypass
Switch
UPS
Service Bypass
Switch
UPS
Service Bypass
Switch
UPS