B&K Precision 1620A, 1623A User Manual
INSTRUCTION
MANUAL
Models 1620A/ 1621A/ 1622A/
1623A/ 1626A/ 1627A
DC REGULATED
POWER SUPPLY
2
TABLE OF CONTENTS
7. MAINTENANCE ........................................................................13
7.1 Main fuse replacement .............................................................13
7.2 Calibrations ..............................................................................13
7.3 Voltage calibration ...................................................................14
7.4 Voltmeter alignment ................................................................14
7.5 Current calibration ...................................................................14
7.6 Ammeter alignment ..................................................................14
LIMITED WARRANTY ................................................................15
SERVICE INFORMATION ..........................................................16
1. INTRODUCTION ........................................................................ 3
2. FEATURES .................................................................................. 3
3. SPECIFICATIONS ...................................................................... 4
4. PRCAUTIONS FOR USE ........................................................... 6
4.1 Confirming the supply range ..................................................... 6
4.2 Precautions for connection of output terminals ......................... 6
4.3 Operating environment .............................................................. 7
5. EXPLANATION OF PANEL...................................................... 7
5.1 FRONT PANEL ........................................................................ 7
5.2 REAR PANEL .......................................................................... 9
6. OPERATION PROCEDURES ................................................. 10
6.1 Stand-alone operation .............................................................. 10
6.2 Serial connection ..................................................................... 10
6.3 Parallel operation (MASTER / SLAVE Control) .................... 11
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1. INTRODUCTION
The BK Precision Analog and Digital series are high quality
serial control type DC Regulated Power Supplies. These models
can be operated at constant voltage or constant current mode
whose output can be varied from 0 up to the rated values for
respective model.
It is a compact unit provided with separate voltage and
current meters (Analog for 1620A, 1622A, 1626A and 3-digit
LEDS for 1621A, 1623A, and 1627A series) for monitoring the
output voltage and current simultaneously. In terms of
operability, these units enable high precision, continuous
variability via coarse and fine adjust knobs. The BK Precision
Analog and Digital series can be connected in parallel with
multiple units of the same model set up a “master/slave”
configuration to increase the output current capability. Serial
connection of multiple units can be used to increase the output
voltage level.
This family of power supplies provides clean and stable DC
output which is most suitable for many areas including
laboratory, industrial, field service, hobby, and telecommucation
applications.
2. FEATURES
• The BK Precision Analog and Digital series are constant
voltage / constant current power supplies which feature
excellent line and load regulations, low ripple and noise
characteristics.
• The units feature separate voltage and current meters so
that output voltage and current can be monitored
simultaneously.
• Output voltage and current can be adjusted continuously
in full range to any desired values. Adjustment can be
done easily and precisely by using separate coarse and
fine adjust knobs.
• The constant current circuit operates to protect against
overload and output short circuit. The limiting current
values can be preset in the full range of the rated values
for respective model.
• Multiple units of power supplies of same family can be
connected in series to provide higher output voltage.
• Multiple units of power supplies of SAME model can be
connected in parallel (master / slave configuration) to
achieve higher output current.
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3. SPECIFICATIONS
1620A
1626A
1622A
1621A
1627A
1623A
OUTPUT VOLTAGE
0 - 18V
0 - 30V
0 - 60V
0 - 18V
0 - 30V
0 - 60V
OUTPUT CURRENT
5A
3A
1.5A
5A
3A
1.5A
CONSTANT VOLTAGE CHARACTERISTICS
Load regulation (0-100%)
0.02% +3mV
Line regulation ( ±10% )
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
Line regulation ( ± 6% )
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
Ripple and noise r.m.s
1mV max.
CONSTANT CURRENT CHARACTERISTICS
Load regulation (0-100%)
0.02% +3mV
Line regulation ( ±10% )
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
Line regulation ( ± 6% )
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
0.02% +3mV
OUTPUT
Output terminals ( color )
( + ) Red , ( – ) Black , ( GND ) Green
Ground proof voltage
± 180V
INSTRUMENTATION
Voltmeter
Analog
3 digits LEDS
Ammeter
Analog
3 digits LEDS
Voltmeter accuracy
± 7% fs
± 2% + 2 digits
5
Ammeter accuracy
± 7% fs
± 2% + 2 digits
FUNCTIONS
Serial connection
( independent control mode )
Can be connected in series ( within limits of ground proof voltage )
Parallel operation
( master – slave mode )
Can be operated in “one-control” parallel configuration ( only same model )
COOLING SYSTEM
Natural Convection
POWER CONSUMPTION
VA / W
( for rated load of AC 220V )
Approximate 210
Approximate 220
AC INPUT
Voltage , Frequency
120V AC ± 10%, 60 Hz (120/220/230/240V AC ± 10%, 50/60Hz version available)
Operating ambient temperature
5 to 40°C 10 – 80% R.H.
DIMENSIONS AND WEIGHT
Dimensions ( W x H x D )
205 x 115 x 270 ( mm )
Weight
Approximate 6 Kgs
Approximate 7.4 Kgs
FUSE RECOMMENDED
Input fuse F2
AC 100V, 110V, 120V
3AF
AC 220V, 230V, 240V
2AF
Internal fuse F1
500mAF
NOTE: Specifications and information are subject to change without notice. Please visit www.bkprecision.com for the most current product information.
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4. PRECAUTIONS FOR USE
4.1 . CONFIRMING THE SUPPLY RANGE
The unit must be used within its specified range. The rated input
voltage can be found on the rating table under the unit. Before
plugging into the AC supply outlet, check if the input rating conforms
to your local supply. For certain models, a voltage selector is
available, switch the voltage selector to the correct position before
use. Also, please check that you have the correct fuse inserted in the
fuse box below the AC input receptacle.
4.2. PRECAUTIONS FOR CONNECTION OF
OUTPUT TERMINALS
These units are a floating type power supply. For ordinary use, be
sure that the MASTER/SLAVE switch on the rear panel is set to
MASTER position and either the (+) output terminal or the (−)
terminal is connected to the GND terminal (chassis GND) via the
shorting bar.
Warning: For model 1622A and 1623A, the maximum output
voltage is up to 60Vdc. Touching the live metal part of output terminals
may be hazardous. User must avoid touching the live metal part of output
4.3. OPERATING ENVIROMENT
Be sure to use this unit within the specified ambient
temperature range listed in the specification table.
Because the unit is cooled by natural convection, do
not place objects on top to block the convection. Also
user must avoid placing the unit on or near any heat
emitting devices or use multiple units in stacked
configuration. For best results, use the unit in an
environment that has good cross-ventilation.
Altitude up to 2000M
Installation category: CAT II
Pollution degree: 2
Indoor use only
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