Introduction
Eaton 9EHD UPS (80-200 kVA, 380/400/415V) Installation and Operation Manual
1-3
1.2
Options and Accessories
Contact an Eaton sales representative for information about the following options.
1.2.1 External Battery Cabinet
Battery backup protection is provide by equipping the UPS system with up to four External Battery Cabinets
(EBCs) containing sealed lead-acid, maintenance-free batteries. The EBCs are housed in single, free-standing
cabinets designed for line-up-and-match installation, but may be installed separate from the UPS cabinet.
1.2.2 Parallel System
A parallel UPS system with up to four UPSs can be installed to provide a parallel capacity and/or redundant
system. This load sharing system provides more capacity than a single UPS, and can provide backup,
depending on the load and configuration. In addition, when one UPS is taken out of service for maintenance or
is not operating properly, a redundant UPS continues to supply uninterrupted power to the critical load. A
Controller Area Network (CAN) Bridge provides connectivity for system metering and operational mode
control.
1.2.3 Monitoring and Communication
Mini-Slot Cards – Optional Mini-Slot cards support several protocols, such as WEB/SNMP, RELAY / RS232 and
Modbus. See Chapter 7, “Communication,“ for additional information on monitoring and communication
features.
1.2.5 Maintenance Bypass
1.2.4 Dual Input
The optional internal Maintenance Bypass for 80-200 kVA models consists of input, output and bypass
switches used to control the AC input to the UPS the inverter output, and a Maintenance Bypass switch used
to partially isolate the UPS so that a limited number of components can be serviced without interrupting power
to critical systems.
The external Maintenance Bypass Switches (MBS) is an external wall mounting enclosures with bottom cable
entry to provide a simple solution primarily to manage single stand-alone UPS maintenance by providing
possibility to electrically isolate UPS completely while feeding the load directly from utility. The bypass
switches will be mounted separate from the UPS. The MBS cabinet with safety shields behind the hinged
doors for hazardous voltage protection. The cabinets match the UPS cabinet in color.
Dual feed models are available for 9EHD 80-200 kVAUPS. To update a single feed UPS to dual feed, field
update kits for dual feed can be purchased from Eaton. Connectors on dual feed models provide a separated
bypass input to UPS.
Summary of Contents for 9EHD Series
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