EG&G ORTEC 4002A Instrukcja obsługi i serwisowania - Strona 6
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Drukuj stronęEG&G ORTEC 4002A POWER SUPPLY
1.
DESCRIPTION
The EG&G ORTEC 4002A Power Supply is designed to be
mounted in the space provided on the rear of the 4001
Series Modular System Bin. The power supply meets or is
superior to the recommended power supply specifica
tions in Appendix A of TID-20893 (Rev). Type 1, Class A,
adopted by the AEC Committee on Nuclear Instrument
Modules.
Designed for international use. the 4002A can accept
input mains voltages of 100. 120. 220. or 240 V ac at 47-63
Hz. A connector block at the rear of the 4002A is used to
select the intended mains voltage range (Section 3). The
connector block also functions as a fuse holder and power
cord connector. By using this CEE-22" standard con
nector on the chassis, virtually any type of mains plug may
be conveniently mated to the 4002A.
The power supply furnishes four standard dc voltages:
+12 V at 2 A; -12 V at 2 A; +24 V at 1 A; and -24 V at 1 A. No
power derating is necessary for operation between 0 and
+50°'C ambient temperature. The dc outputs are regu
lated. short-circuit protected, current limited, and ther
mally protected.
A nominal 117 V ac is supplied to the bin connector
independent of input mains. The 117 V ac power available
is limited only by the power supply fuse when operating
from 100 or 120 V ac mains. When operating from 220 or
240 V ac mains, the 117 V ac is derived by autotransformer
action and is limited to 50 VA output with a dc load on the
power supply of 96 W.
A control panel is provided on the 4001 or 401 Series Bins
for operating and monitoring the 4002A powersupply. An
On-Off switch. power-Indicating lamp, thermal warning
lamp, and convenient dc monitor jacks are provided.
The thermal warning lamp is lighted when the internal
temperature rises to within 20° C of the maximum safe
operating temperature. The power supply is automat
ically cut off by an internal switch should the temperature
exceed the maximum safe operating temperature.
Fast disassembly for maintenance purposes is made
possible by the use of quick-disconnect connectors. The
control circuitry uses high-quality integrated circuits and
power semiconductors for simple and reliable operation.
2.
SPECIFICATIONS
The specifications for the 4002A power supply meet or are
superior to those set forth by the AEC Committee on
Nuclear Instrument Modules in TID-20893 (Rev). Appen
dix A. Type 1. Class A.
INPUT
Nominal Voltage (ac)
100
120
220
240
Regulation Range (V ac) f
88-110
103-129
191-239
206-258
FREQUENCY RANGE 47-63 Hz. Input current at 120 V
ac is typically 1.8 A rms with a 96 W load (43% efficiency).
DC OUTPUT Output at the following ratings: +12 V at
2 A. -12 Vat 2 A. +24 Vat 1 A. -24 V at 1 A; maximum out
put power to 50°C ambient. 96 W; operation to 60° C
ambient with current derated 2.5%/° C.
117 VOLT AC OUTPUT 117 V ac output limited only by
the supply fuse when operating from 100 or 120 V ac
mains. Output is limited to 50 VA at 96 W dc load while
operating from 220 or 240 V ac mains.
REGULATION
<±0.05% over the combined range of
zero to full load and input voltage of 103-129 Vac over any
24-h period at a constant ambient temperature and rated
line and load after a 60-mln warm-up.
INSTABILITY <±0.3% after a 24-h warm-up of constant
line. load, and ambient temperature over a six-month
period.
TEMPERATURE
COEFFICIENT
range of 0°C to 60° C.
<0.01 %/°C
over
a
THERMAL PROTECTION A thermal warning switch will
be activated when the ambient temperature approaches
within 20° C of the safe operating temperature. A thermal
cutout switch disables the power supply when the temper
ature exceeds the safe operating temperature.
NOISE AND RIPPLE The output noise and ripple are <3
mV peak-to-peak, as observed on a 50-MHz bandwidth
oscilloscope.
VOLTAGE ADJUSTMENT ±0.5% minimum range, re-
settability ±0.05% minimum of supply voltage.
RECOVERY TIME
<50 jjs to return to within ±0.1% of
rated voltage for any change in input voltage within the
specified range and load current from 10 to 100% full load.
CIRCUIT PROTECTION
The input line to the power
supply is fused. In addition electronic circuitry provides
output current limiting to prevent damage to the supply
and provides automatic recovery when the demand is re
moved.
■International Commission on Rules tor ttie Approval of Electrical Equipment, standard number 22.
tThe regulation range is determined by changing thenominal voltage +10%to-12%, where the nominal voltages are defined as 100, 117,217,234. (TID-20893
defines the U.S. standard nominal voltage as 117.) To avoid confusion when reading the mains voltage selector of the 4002A, nominal voltages are desig
nated as 100, 120, 220, and 240.