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Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 19
Models 8903, 8905 and 8908 power supplies provide -48 VDC talk battery voltage from an AC input voltage. As
shown in table 4, the difference between models 8903 and 8905 is the input voltage range. Model 8905 has a much
wider input voltage range. Allowing it to operate from any AC line voltage, where as model 8903 has a limited
range. Model 8908 can only be used with the 900 chassis. It also has the benefit of a wide input voltage range but
with the addition of providing 300 watts of talk battery power.
Table 4—Power Supply Specifications
Model 8901 AC Power Supply 120/240 AC
Input Voltage Self-detecting, 90VAC to 135 VAC at 60HZ
175 VAC to 264 VAC at 50 Hz
Input Frequency 47 to 63 Hz
Inrush Surge Current Max. 12 amp peak at 264 VAC cold start
Output Power 55W Continuous
Maximum Number per system 2
Redundancy Optional
Ventilation Convection cooled
Protection Unit is fused and protected from short circuits and over-
voltage
Approvals UL 1459, EN 60950, CSA-C22.2 No.950, CE Mark
Model 8902 DC Power Supply 48 VDC
Input Voltage -39 to -60 VDC
Inrush Surge Current Maximum 12 amp at 60VDC
Output Power 55 Watts Continuous
Maximum Number per system 2
Redundancy Optional
Ventilation Convection cooled
Protection
Unit is fused protected from short circuits and overage
Unit is diode protected from reversed polarity
Approvals UL 1459, EN60950, CSA-C22.2 No.950, CE Mark
Model 8907 DC Power Supply 24 VDC,
Input Voltage 18 to 36 VDC
Inrush Surge Current Maximum 12 amp at 36 VDC
Output Power: 55 Watts Continuous
Maximum Number per system 2
Redundancy Optional
Ventilation Convection cooled
Protection
Unit is fuse protected from short circuits and over-voltage
Unit is diode protected from reverse polarity
Approvals UL 1459, EN60950, CSA-C22.2 No.950, CE Mark
Model 8903 Power Supply 120 VAC
Input Voltage 90VAC to 132 VAC
Input Frequency 60 Hz
Inrush Surge Current Max. 20amp peak at 132 VAC cold start
Output Voltage -48.0 VDC
Maximum Number per system 2
Redundancy Optional
Ventilation Convection cooled
Protection Unit is fused and protected from short circuits and over-
voltage
Approvals UL 1459, UL 1950, CSA-C22.2 No.950