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INSTALLATION-SITE REQUIREMENTS
SECTION 200-096-203
FEBRUARY1991
TABLE34
SUMMARY
OFELECTRICAL/ENVIRONMENTALCHARACTERlSTlCS .
GENERAL
Primary Power
Input AC
AC Frequency
DK24 power supply
DK56 power supply
DK96 power supply
85VAC - 135VAC
50/60 Hz
65 watts
140 watts
230 watts
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Environmental Specifications
Operating Temperature
Operating Humidity
Storage Temperature
32 - 104°F (0 * 40°C)
20 * 80% relative humidity (without condensation)
-4 - 158°F (-20 * 70°C)
Power Supply
DC Voltage Output
Specification
-24VDC; -26.3 m -27.8
+ 5VDC; + 4.5 m + 5.5
- 5VDC; - 4.5 - - 5.5
Battery Charger
Characteristics
Charger; current limiting
Nominal Float Voltage; 2.275 volts/cell
Charge Current; 0.7 amps maximum
Battery Discharge Cut-off Voltage; 20.5 f 0.5V
PSTU (before November 1989)
Ring Voltage
Ringing Capability
Square Wave:
190 f 20V peak-to-peak (no load)
up to two ringers maximum per circuit.
PSTU2/PESU (circuits 1 & 2)
Ring Voltage
Square Wave:
Low position 130 +_ 20V peak-to-peak (no load)
High position 190 f 25V peak-to-peak (no load)
Ringing Capability
Two ringers maximum per circuit, high or low position
BTU Rating
DK24
PEKU 3
103 BTUs (30 wh)
PCOU 2
PCTUS 1
PIOUS 1
Electronic Telephone 24
DK56
PEKU 5 205 BTUs (60 wh)
PCOU 3
PCTU 1
Electronic Telephone 40
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DK96
PEKU 9 348 BTUs (102 wh)
PCOU 5
PCTU 1
Electronic Telephone 72
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