American Power Conversion DC Series External Battery Installation, Battery Back-up function

Page 39

4.4 External Battery Installation

4.4.1Battery Back-up function

Battery backup may be achieved by connecting 48V strings of batteries onto the external battery terminals of the distribution module at the rear of the system. This battery string will be connected to the system bus voltage via an internal LVD contact. If for any reason the rectifier outputs are not present, either by component failure or by the loss of AC power then the battery string can supply the load for a limited time.

4.4.2LVD Function

An internal LVD contact is fitted for battery string protection. Its function is to connect or disconnect the battery string from the system bus. The LVD can be set to “ON”, “AUTO”, or “OFF”. In the On position the batteries are connected to the system bus. In “Off” the connection is broken. In “Auto” the batteries are connected to the system bus under normal system running conditions. If the system bus voltage falls the battery string will supply the load. If the battery voltage then falls below 42Vdc the LVD contact opens and disconnects the batteries to protect them. When system bus voltage is re-established the battery string will be trickle charged until the battery voltage is >50Vdc and then the batteries will be reconnected to the system.

4.4.3Installation procedure

!!! CAUTION !!!

Only connect external battery strings of 48V to the MX06 40A Shelf.

External batteries MUST have circuit breakers fitted at source.

Observe the polarity of the external battery connector.

See section 4.3.4 for connection photo.

Note : It is possible to connect external battery strings of different capacities but the backup duration will be affected.

•Ensure the battery breaker/s for the external batteries are in the ‘OFF’ position before connecting external batteries.

•Set the front panel “battery connection” switch to “OFF”.

•Choose cables rated at 50A and colour coded to meet local installation regulations.

•Cables should be crimped with M5 ring crimps for connection to system battery terminals.

•Connect battery string to system ensuring correct polarity of connection.

•Conduct a final check before turning on the external battery breaker.

User Manual 990-9178A

Page 39 of 44

18th FEB 02

DC MX06 40A Shelf

Page 38 Page 40
Image 39
Page 38 Page 40
Contents DC Series MX06 40A Shelf DC MX06 40A Shelf Contents Issue Record Safety Precautions General InformationIntroduction CEC Code C22.1-98 Canada Types of HazardsConcealed Damage Inspection upon Receipt of GoodsGeneral Visible External DamageAPC Worldwide Customer Support Warranty Information Limited WarrantyWarranty Limitations Specification Product Overview and Technical DescriptionRectifier Parameter per rectifier 1TWF0500H54 Display + LED’s SK11 Alarm Card LayoutController SK10Alarms Available AlarmsAccess Front Access Alarms Knockout Panels Rear Access AlarmsAlarm Description Major alarm Minor alarm Selection Major and Minor AlarmsCustomer Inputs Current Limit ProgrammingOutput Voltage Programming Enable Function Input Description Location Battery Test Function Input Description LocationSystem Controller Temperature Compensation Input Description Socket PinDimensions WeightMechanical Mounting Options Positive Earth Configured SchematicNegative Earth Configured DCM00K02W483 System ConfigurationDCM00K02W481 DCM00K02W482AC Primary Supply Installation ProcedureSingle Phase Rear Access ConnectionTerminal Block Cable Gland Front Access ConnectionSingle Phase, AB Feed Front Access Connection 3 3 Phase Star Supply Front access connection 4 3 Phase Delta Supply Front access connection DC Distribution 1 10 GMT Fuses Rear Access2 10 GMT Fuses Front Access Ambient Temperature3 4 Circuit Breakers Rear Access 4 4 Circuit Breakers Front Access 6 4 Cartridge Fuses Front Access 5 4 Cartridge Fuses Rear AccessInput cables Routing Of CablesOutput Cables External Battery Installation Battery Back-up functionLVD Function System Output Earthing Battery Connection DiagramPowering up the MX06 40A Shelf Commissioning the SystemGeneral Manual Handling Procedure PreparationMethod Fault Symptoms Fault Finding / SymptomsService, Accessories & Spares Rectifier replacementController replacement
Top Page Image Contents