S&C Instruction Sheet 659-555
13
Installation, Assembly, and Setup
Cable Terminations
NOTICE
For internal bus and cabling connections, refer to instal-
lation drawing PEA-1610-4-IN and any project-specific
drawings supplied with the PureWave SMS-250 system .
See Figure 6 for the location of the cable-termination
area .
Battery Connection
STEP 7.
The battery must be supplied with an adequate
protection fuse and a disconnect breaker. The
battery-protection fuse must be sized correctly for
the short-circuit current capacity of the battery.
The battery supplier shall include the BATTERY
DISCONNECT switch in the battery module.
NOTICE
DC protection must be supplied at the battery
branch level in the battery cabinet .
Terminate the dc cables from the separate
battery pack (if supplied) to the dc inputs in the
cable-termination area. The positive terminal of
the battery must connect to the positive terminal
on the PureWave SMS-250 system. The negative
terminal of the battery must connect to the negative
terminal on the PureWave SMS-250 system.
Note that battery voltage is floating from the
earth reference. The battery enclosure must be
bonded as indicated in the Earth Reference and
Bonding section on page 16.
Power Connections
Terminate the ac cables to the line inputs (L1, L2, and L3)
in the cable-termination area. The ac output of the SMS-250
(neutral) is not bonded to ground.
The input and output circuits are isolated from the enclo-
sure. System grounding, when required by Sections 690.41,
690.42, and 690.43 of the National Electric Code, ANSI/NFPA
70, or the Canadian Electrical Code Part 1, is the responsibil-
ity of the installer.
The SMS-250 is non-isolated; there is no galvanic isolation
provided inside the equipment between the dc input and the
ac output.
Wiring
Use 75°C (167°F) wire either two each No. 4/0 AWG copper or
two each 300-kcmil aluminum wire per terminal or equivalent.
For installations in the U.S., all wiring methods must be
in accordance with the National Electrical Code and ANSI/
NFPA 70.
For installations in Canada, all wiring methods must be
in accordance with the Canadian Electrical Code, Part 1.
Figure 6. Location of the cable-termination area.
