3: Installation
40
UPS471-02-00 PW9000DPA User Manual UK Dated 06/08/14
3.8
Battery cabling procedure
Safety Notes
Please ensure you read and understand the following safety notes before you begin the battery installation.
1. All the cable installation procedures detailed below must be supervised by the commissioning engineer.
2. Ensure that the UPS input and output supplies are isolated and locked out at their respective distribution boards.
Warning notices should be posted to prevent any inadvertent operation of the UPS mains supply isolators.
3. External battery cables and fuses are bespoke to the installation. Before you connect the battery cables ensure that
the customer-provided fuses and cables are suitably rated in accordance with the prescribed IEC standards or local
regulations (for example BS7671:2008).
4. Ensure that the UPS maintenance bypass switch (IA1).
5. Ensure that the UPS fused battery isolator(s) (F4) is open (DPA-50 & DPA-150) and the battery isolators are open in
the external battery cabinet (DPA-250 or where used) – the terminals to which the battery cables are to be fitted must
be electrically isolated.
3.8.1 Connecting the battery cables
Note:
The battery cables and fuses are bespoke to the installation.
UPS Cabinet mounted batteries
Internally mounted batteries will be connected by the commissioning engineer.
External battery cabinet mounted batteries
The batteries within the external battery cabinet will be connected by the commissioning engineer. The only wiring that
can be carried out by the installation engineer is the cabling between the external battery cabinet and the UPS battery
terminal blocks, as detailed below:
1. Familiarise yourself with the wiring diagrams in Figure 3.10 and determine whether the installation is designed to use
a common battery or individual battery
2. Ensure that the fused battery isolator(s) in the external battery cabinet are open.
3. Connect the protective earth cable (PE) between the UPS and external battery cabinet.
4. Connect the battery cables, from the UPS battery terminal blocks to the corresponding battery terminal blocks in the
external cabinet, ensuring that the cables are connected to the corresp / N /- terminals as illustrated in Figure
3.10.
WARNING:
Opening or removing the UPS/Battery enclosure covers will create the risk of exposure to
dangerous voltages if power is connected to the UPS.
If the UPS is delivered without batteries, Uninterruptible Power Supplies Ltd is not responsible for any
damage or malfunction caused to the UPS by the incorrect storage, installation or connection of batteries
by third parties.
The final assembly and battery connection must be supervised by the commissioning engineer. Do not
attempt to complete the battery wiring or close the battery isolators before the system has been
commissioned.
WARNING:
Do not re-close the fused battery isolators in the battery cabinet before the UPS system is
commissioned.