Toshiba Strata DK24 Installation And Maintenance Manual page 38

INSTALLATION-SITE REQUIREMENTS
SECTION 400-096-203
SEPTEMBER 1992
SUMMARY OF ELECTRICAL/ENVIRONMENTAL CHARACTERISTICS
GENERAL
Primary Power
Input AC
AC Frequency
DK24 power supply
DK56 power supply
DK96 power supply
Environmental Specifications
Operating Temperature
Operating Humidity
Storage Temperature
Power Supply
DC Voltage Output
Specification
Battery Charger
Characteristics
PSTU (before November 1989)
Ring Voltage
Ringing Capability
PSTU2/PESU (circuits 1 & 2)
Ring Voltage
Ringing Capability
BTU Rating
DK24
DK56
DK96
TABLE 3-A
85VAC ~ 135VAC
50/60 Hz
65 watts
140 watts
230 watts
32 ~ 104°F (0 ~ 40°C)
20 ~ 80% relative humidity (without condensation)
–4 ~ 158°F (-20 ~ 70°C)
–24 VDC: -26.3 ~ -27.8
+ 5 VDC: + 4.5 ~ + 5.5
– 5 VDC: – 4.5 ~ – 5.5
Charger: current limiting
Nominal Float Voltage: 2.275 volts/cell
Charge Current: 0.7 amps maximum
Battery Discharge Cut-off Voltage: 20.5 ± 0.5V
Square Wave:
190 ± 20V peak-to-peak (no load)
up to two ringers maximum per circuit.
Square Wave:
Low position 130 ± 20V peak-to-peak (no load)
High position 190 ± 25V peak-to-peak (no load)
Two ringers maximum per circuit, high or low position
PDKU: 3 103 BTUs (30 wh)
PCOU: 2
PCTUS: 1
PIOUS: 1
Digital Telephone: 24
PDKU: 5 205 BTUs (60 wh)
PCOU: 3
PCTU: 1
Digital: Telephone 40
PDKU: 9 348 BTUs (102 wh)
PCOU: 5
PCTU: 1
Digital Telephone: 72
3-2