Chapter 1 Installation
MUST400_User manual_EN_REV02 User Manual
17
Output System Connections
6. Connect the system output cables between the UPS output terminals (output A-B-C-N) Refer to Fig.4-11
and the critical load and tighten the terminals screws to 5Nm (M6 Bolt) or to 13Nm (M8 Bolt) or to 25Nm (M10
Bolt).
Note: ENSURE CORRECT PHASE ROTATION.
WARNING
If the load equipment will not be ready to accept power on the arrival of the commissioning engineer, then
ensure that the system output cables are safely isolated at their ends.
7. Re-install all the protective covers.
1.7 Control Cabling and Communication
1.7.1 UPS Dry Contact and Monitoring Board Features
According to the specific needs of the application, the UPS may need auxiliary connection to realize the
management of the battery system (including external battery switch and battery temperature sensor),
communication with PC, provide alarm signal to external device, or realize remote EPO.
These functions are realized through the UPS dry contact board (GJ) and monitoring board (JK) on the front
of bypass module.
The UPS system provides the following interfaces:
EPO (Emergency power off)
Environment and battery temperature input interface
Generator input dry contact interface
Battery warning output dry contact interface
Battery circuit breaker interface
Main failure warning output dry contact interface
Slot (TM) for intelligent card interface
User RS232 and RS485 communication interface
Fig.1- 4: Bypass Module (Include Interface of Dry Contact Board GJ and Monitoring Board FK)
警告
危 险
