GE Industrial Solutions GPS 4812_24 - Manual (Page 65)

Galaxy Power System 4812/24
Issue 9 Preliminary Januray 2008 Specifications 9 - 3
Rectifier
Table 9-B: Rectifier Specifications
Electrical
Input
Voltage Range 176-264Vac, 2-wire, single phase
Frequency Range 47 - 63 Hz
Power Factor > 0.98 for loads > 50%
AC Surge Protection: It is important that ac surges reaching rectifiers do not exceed the capacity of the
rectifier internal surge protection. Protection must be provided external to the GPS system, if necessary, to
limit surge energy reaching the rectifiers. Site surge protection must be coordinated with rectifier internal
surge protection and must clamp at a lower voltage than the rectifier internal protection. The internal
protection voltage and current characteristics of the rectifiers are as follows:
Phase to Phase Voltage
MOV Conduction Current
320Vac (RMS) 0A
620V maximum clamping 1mA (DC test current)
810Vpeak 100A peak (8 x 20 μs)
Output All
High Voltage Shutdown
Internal Selective High Voltage Shutdown
(ISHVSD)
Backup High Voltage Shutdown
(BUHVSD)
Float: 56.0Vdc Nom.
1, 2
Boost: 56.0Vdc Nom.
1, 2
Equalize: 59.52 ± 1Vdc Nom. 1, 2
Float/Boost:59.52Vdc 3
Equalize: 66.0Vdc
3
1. Selectable/programmable through Galaxy Controller
2. Factory default settings – actual range is 44 - 60Vdc
3. Factory default settings – Float/Boost range is 58.51 - 60.53Vdc,
Equalize range is 65.2 - 67.0Vdc
Output 596A2
Output Power 1 3,000W maximum
Output Current 1 55Adc maximum from -40°C to +65°C
42.5Adc at +75°C
30Adc at +85°C
Rectifier self-derates at approximately
1 ampere per degree C (+65°C to +85°C)
Float/Boost Voltage 44-58Vdc
Total Harmonic Distortion <5% at Nominal Vac and >25Adc
Regulation ±0.5%
Ripple 100 mVrms
Noise < 2mV psophometric
Current Limit Set Point 15A-55A
Note: When using the maximum 16 rectifiers in a
cabinet, do not exceed 50 amperes current limit per
rectifier at 65°C.
1. See Figure 9-1: Output Current vs. Temperature.