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Unless chassis DC isolation is specified when ordering, this system is supplied with the
Note:
AC and DC earths connected. This system has DC Common in the Positive side of the
circuit (+ve earth system or -48 VDC). Before connecting the Batteries or Rectifiers
ensure that Earthing is correct for your application (24 VDC are normally wired for –ve
earth system or +24 VDC).
5. Turn on AC upstream and check that voltages from phase to neutral are as expected.
Rectifier Start-up
1. Turn the upstream AC circuits on.
a)
Confirm operation voltages between each set of Line inputs A, B, and C:
A-L1 to A-L2 = 208 or 230 volts, B-L1 to B-L2 = 208 or 230 volts, C-L1 to C-L2 = 208 or 230 volts
b) Check voltages between each set of Line inputs and ground:
A-L1 to Ground = 208 or 230 volts, B-L1 to Ground = 208 or 230 volts, C-L1 to Ground = 208 or
230 volts
A-L2 to Ground = 208 or 230 volts, B-L2 to Ground = 208 or 230 volts, C-L2 to Ground = 208 or
230 volts
2. Fully insert first rectifier, wait for the rectifier to start and its power on LED to remain green.
3. Check the SM36 powers up, and indicates the system default float voltage (approx. 54V on
its display). If the audible alarm activates, press any SM36 button to silence it.
4. If a different system float voltage has been specified, set this at this time using the
procedure specified in the SM36 Manual (either from the front panel or connected
computer).
5. Fully insert the rest of the rectifiers ensuring they power up with only their green "power on"
LED illuminated.
6. Check that the load and battery currents on the SM36 are 0 amps (+/- 1 or 2 amps).
7. Check that all SM36 configuration settings are correct (as per customer specification) with
respect to:
- Voltage levels
- Alarm settings
- Alarm mappings to the volts-free relays
(Refer to the SM36 manual for information on how to check these via the front panel or
locally connected computer).
Battery Start-up
It is preferable that battery circuit breaker connections should be made when the
Note:
rectifiers are turned on and the system is "live". This is because the system voltage
and battery voltages will be similar, thus minimizing any arcing during connection. This
also prevents high current arcing due to the charging of the rectifier output capacitors.
1. Power up only one rectifier initially (to limit any damage if any connections are incorrect).
2. Measure the voltage across each battery string at the terminals of the Compact System.
Ensure that the reading from the DC Common bus to the Battery Live Terminals is -48V as
per System specification.
3. Turn on battery circuit breaker measuring the battery voltage. Ensure that the voltage
increases slightly to the system Float Voltage (typically the voltage will increase from 2 to 3V
below float voltage. At this point the batteries will be drawing some current to bring them to
a full state of charge.
• Phone: 714-751-0488 • E-mail: techservice@newmarpower.com
Newmar • PO Box 1306, Newport Beach, CA 92663
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