Service manual

in the long backup time model UPS. Photos of super charger can be found in Fig. 3.2.2.1 & Fig.

3.2.5.1.

41.2V CHARGER MODULE 110V CHARGER MODULE

Fig. 5.2.5.2 Standard 1A charger

5.2.6 Auxiliary Power Supply (SPS)

The Auxiliary Power Supply (SPS) module supplies DC power for UPS operation. The input of the

SPS is the battery, or the output of the charger. The SPS module output +12 Vdc and a High

frequency low level AC power, called H.F power+/ -, +12Cdc mainly use for Relay driving, Signal

amplifier, Fans supply, and generate +5V DC power supply for the CPU, And the. H.F.power+/ - is

not only the source of IGBT gate drive power but also the source of the isolated power supply for

communication ports on the CNTL board. The SPS module works only when the +12 Vdc

regulator supplies Vcc to its control IC. Fig 5.2.6.1 shows SPS module for 1K & 2/3K UPS

respectively.

1K SPS 2/3K SPS

Fig.5.2.6.1 SPS Module