Manual Bypass Mode Start-Up Procedures - Delta Modulon DPH Series User Manual

6.2.4 Manual Bypass Mode Start-up Procedures

WARNING:
1. For parallel units, ensure that every operation procedure mentioned below is
3. Please note that you can turn on the Manual Bypass Breaker (Q2) only when
4. In manual bypass mode, the connected critical loads will be supplied by the
5. Ensure that all of the breakers and switches (except the Manual Bypass
6. Please note that the wiring terminals and the Manual Bypass Breaker (Q2)
From Online Mode to Manual Bypass Mode
1
In online mode, the LCD's main screen shows as follows and the tri-color LED
indicator illuminates green. For the tri-color LED indicator location, please refer to
Figure 2-11.
UPS-1.1
Power Flow
Power Flow
Summary
System Status
(Figure 6-14: Online Mode Screen_ User Login & ON/ OFF Button Location)
simultaneously executed and performed to all of the parallel UPSs.
parallel ones, please contact service personnel.
the UPS needs maintenance. In manual bypass mode, the connected critical
loads will be supplied by the manual bypass and the output won't be protected.
Please ensure that the bypass AC source is normal.
manual bypass; thus, maintenance personnel can perform maintenance
without interrupting the power supplying to the critical loads.
Breaker (Q2)) are in the OFF position, and use a voltmeter to check there is
no high voltage inside the UPS (except the wiring terminals and the Manual
UPS maintenance.
have high voltage. Do not touch the wiring terminals and the Manual Bypass
Breaker (Q2) during UPS maintenance process to avoid electric shock.
MEASUREMENT SETUP
POWER FLOW
Maintenance
Bypass
Bypass
Mains
90 %
5 mins
MAINTENANCE LOG IN EVENT LOG
User
6-13
6 UPS Operation
10:15
May 25,2018
On-Line
ON/ OFF
Button
Load
30 %