OPERATING INSTRUCTIONS
for the
CBPS-300™
CIRCUIT BREAKER
DC POWER SUPPLY
Vanguard Instruments Company
1710 Grevillea Court
Ontario, California 91761
TEL: (909) 923-9390 April 2003
FAX: (909) 923-9391 Rev 1
CBPS-300 OPERATING INSTRUCTIONS
SAFETY WARNINGS AND CAUTIONS
Only trained operators shall use this device. All circuit breakers under test shall be off line and
fully isolated.
Do Not Service or Test Alone
Do not perform test procedures or service unless another person is also present who is capable of
rendering aid and resuscitation.
Do Not Modify Test Equipment
Due to the added risk of introducing additional or unknown hazards, do not install substitute
parts or perform any unauthorized modification to any CBPS-300 test unit. To ensure that all
designed safety features are maintained, it is recommended that repairs be performed only by
Vanguard Instruments Company’s factory personnel or by an authorized repair service center.
Unauthorized modifications can cause serious safety hazards and will nullify the manufacturer's
warranty.
Follow Exact Operating Procedures
Any deviation from the procedures described in the operator’s manual may create one or more
safety hazards, damage the CBPS-300 and the test transformer, or cause errors in the test results.
Vanguard Instruments Company, Incorporated assumes no liability for unsafe or improper use of
the CBPS-300.
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CBPS-300 OPERATING INSTRUCTIONS
Table of Contents
1.0 INTRODUCTION...................................................................................................... 4
1.1 GENERAL DESCRIPTION........................................................................................... 4
1.2 FUNCTIONAL DESCRIPTION ...................................................................................... 4
1.3 FURNISHED ACCESSORIES....................................................................................... 4
2.0 CBPS-300 SPECIFICATIONS .................................................................................5
3.0 CONTROLS and INDICATORS ............................................................................... 6
4.0 PRETEST SETUP.................................................................................................... 9
4.1 OPERATING VOLTAGES............................................................................................ 9
5.0 OPERATING PROCEDURES................................................................................ 10
5.1 CBPS-300 CABLE CONNECTION ............................................................................ 10
5.2 GENERAL PROCEDURES ........................................................................................ 11
5.3 TEST OPEN COIL PROCEDURE ............................................................................. 11
5.4 TEST CLOSE COIL PROCEDURE ........................................................................... 11
5.5 ENERGIZE SPRING CHARGING MOTOR PROCEDURE ................................................ 12
5.6 REMOTE CONTROL MODE ...................................................................................... 12
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CBPS-300 OPERATING INSTRUCTIONS
List of Tables
Table 1.0 CBPS-300 SPECIFICATIONS....................................................................... 5
Table 2.0 Functional Descriptions of the CBPS-300 Controls and Indicators................ 7
Table 2.0 Functional Descriptions of CBPS-300 Controls and Indicators Cont. ............ 8
List of Figures
Figure 1.0 CBPS-300 Controls and Indicators................................................................ 6
Figure 2.0 90 to 130Vac Switch Setting.......................................................................... 9
Figure 3.0 200 to 240 Vac Switch setting ....................................................................... 9
Figure 4.0 Typical CBPS-300 Connection Diagram...................................................... 10
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CBPS-300 OPERATING INSTRUCTIONS
1.0 INTRODUCTION
1.1 General Description
Vanguard Instruments Company produces
the CBPS-300 as a microprocessorcontrolled circuit breaker DC power supply.
This device was designed to replace the
substation batteries during circuit breaker
testing.
The CBPS provides a ripple free, DC power
source to operate utility circuit breakers for
contact-timing and other breaker operations.
The CBPS-300 allows the user to operate
the OPEN and CLOSE coils of a circuit
breaker during tests under different
selectable operating conditions such as full
voltage or minimum voltage operations.
External trigger input allows the CBPS-300
to be used with the Vanguard Instruments
circuit breaker timers.
A separate DC supply is also available to
drive the breaker mechanism charging
motor.
All CBPS-300 supply outputs are over
current and short circuit protected. This
feature protects the CBPS-300 powersupplies and eliminates the use of
conventional fuses or circuit breaker
protection circuitry.
The CBPS-300 test voltage is selectable
from 24Vdc to 250Vdc. The voltage control
knob on the CBPS-300 front panel allows
the operators to select test voltages.
Coil or charging motor voltage reading is
displayed on a 2 line by 16-character back lit
LCD screen. Push button switches marked
OPEN, CLOSE and MOTOR are used to
operate the breaker’s respected coils and
charging motor
voltage variation under-load; making it an
ideal device for testing circuit breaker coils
under different operating voltages.
A built-in initiate circuit allows the user to
OPEN or CLOSE breakers from the CBPS300 control panel.
The CBPS-300 will energize the breaker trip
or close coil for one-second duration. This
initiate circuit is over current and short
circuit protected. Reset key on the front
panel allows the user to clear the fault
condition.
An unfiltered DC supply is also available to
drive the breaker mechanism charging
motor.
A voltage control knob allows the user to set
coil or motor test DC voltage. DC voltage
output is shown on the 2 lines by 16
characters back-lighted LCD.
1.3 Furnished Accessories
The CBPS-300 is shipped with six 10-foot
test cables with “quick disconnect” type test
plugs on the unit end, and alligator clips at
the test load end. The following cables shall
also be included with the CBPS-300: One
power cord, One ground cable and a cablecarrying bag.
1.2 Functional Description
The CBPS-300 is a variable voltage DC
power supply designed specifically to
perform maintenance test on circuit
breakers. The CBPS-300 DC voltage is
selectable for 24Vdc to 250Vdc. Its ripple
free DC output voltage is regulated up to 2%
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CBPS-300 OPERATING INSTRUCTIONS
2.0 CBPS-300 SPECIFICATIONS
Table 1.0 CBPS-300 SPECIFICATIONS
TYPE Special-purpose test equipment, Variable DC Power Supply
SIZE (inches) 16.8” wide by 12.6” high by 12”deep (42.6cm x 32 cm x 27cm)
WEIGHT 60 pounds (27 Kg)
INPUT POWER 120 Vac or 240Vac selectable, 50/60Hz
DISPLAY
2 line by 16 character back-lighted LCD
VOLT METER DISPLAY 0-300VDC, ±1 V
OUTPUT VOLTAGE 12 to 250 Vdc
COIL DC POWER SUPPLY
DC OUTPUT CURRENT REGULATION
24 Vdc 10A <6%
48 Vdc 10A <3%
120 Vdc 6A <2%
250 Vdc 3A <2%
CHARGING MOTOR DC POWER SUPPLY
NO LOAD VLTG LOAD CURRENT LOAD INTERVAL FULL LOAD VLTG
48 Vdc 12A 60 S 40 Vdc
48 Vdc 18A 20 S 30 Vdc
120 Vdc 12A 60 S 90 Vdc
120 Vdc 18A 20 S 70 Vdc
240 Vdc 6A 60 S 200 Vdc
240 Vdc 9A 20 S 185 Vdc
OUTPUT PROTECTION All DC outputs are over-current protected
ENVIRONMENT Operating: -10°C to 55°C; Storage: -40°C to 65°C
WARRANTY One-year parts & labor (post warranty service is available)
NOTE:
THE ABOVE SPECIFICATIONS ARE VALID AT NOMINAL OPERATING VOLTAGE AND AT A TEMPERATURE OF 25
CBPS-300
SPECIFICATIONS MAY BE UPGRADED AND CHANGED WITHOUT PRIOR NOTICE.
5
°
C (77°F)
CBPS-300 OPERATING INSTRUCTIONS
3.0 CONTROLS AND INDICATORS
CBPS-300 controls and indicators are shown
in Figure 1.0. The leader line with an index
number points to each control or indicator,
which is then cross-referenced to a
functional description in Table 2.0. The
table describes the function of each item on
the control-panel. The purpose of the
controls and indicators may seem obvious,
but users should become familiar with them
before using the CBPS-300. Accidental
misuse of the controls may damage the
CBPS-300. Users should also be familiar
with the Safety Warnings and Cautions
found on the front page of this operator’s
manual.
Figure 1.0 CBPS-300 Controls and Indicators
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CBPS-300 OPERATING INSTRUCTIONS
Table 2.0 Functional Descriptions of the CBPS-300 Controls and Indicators
Fig. 1
Index
1NONE
2
3NONE
4 EXT TRIGGER
5NONE
6NONE
Panel Markings Functional Descriptions
NONE
OPEN coil voltage positive terminal. Female,
Red connector jacks used for connecting voltage
test leads.
OPEN coil voltage negative terminal. Female,
Black connector jacks used for connecting
voltage test leads.
CLOSE coil voltage positive terminal. Female,
Red connector jacks used for connecting voltage
test leads.
External trigger input for remote control. This
input is to be used with the Vanguard
Instruments Company circuit breaker timers.
Female, 4 pin connector.
CLOSE coil voltage negative terminal. Female,
Black connector jacks used for connecting
voltage test leads.
MOTOR voltage positive terminal. Female, Red
connector jacks used for connecting voltage test
leads.
7NONE
8 FAULT
RESET
9NONE
10
11 NONE
120/240 Vac, 8A, 50- 60 Hz
MOTOR coil voltage negative terminal. Female,
Black connector jacks used for connecting
voltage test leads.
Fault LED. Led is lit when over current is
detected.
RESET switch. Reset fault condition and ready
CBPS-300 for next operation.
LCD; 2-line by 16-character; back-lighted;
Displays coil/motor voltages.
Input power connector with third-wire safety
ground and 10A built-in circuit breaker
Safety Ground. A 5/16 threaded stud with handturned wing nut. This must be connected to the
station ground before connecting any CBPS-300
test leads to the transformer.
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CBPS-300 OPERATING INSTRUCTIONS
Table 2.0 Functional Descriptions of CBPS-300 Controls and Indicators Cont.
Fig. 1
Index
12
13 COIL/MOTOR
14 MOTOR
15 CLOSE
16 OPEN
Panel Markings Functional Descriptions
VOLTAGE
CONTROL
Voltage control knob.
Coil or Motor voltage display selection.
Motor voltage initiate switch. Depress switch to
energize motor.
Close coil initiate switch. Depress switch to
energize close coil. The CBPS-300 will
energized the close coil for 1 second period.
Trip coil initiate switch. Depress switch to
energize close coil. The CBPS-300 will
energized the close coil for 1 second period.
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4.0 PRETEST SETUP
4.1 Operating Voltages
The operating voltages for the CBPS-300
are selectable between 90-130 Volts AC,
50/60 Hertz or 200-240 Volts AC, 50/60
CBPS-300 OPERATING INSTRUCTIONS
Hertz. Voltage selection is set by the
120/240 selector switch as how in Figures
2.0 and Figure 3.0.
Figure 2.0 90 to 130Vac Switch Setting
Figure 3.0 200 to 240 Vac Switch setting
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CBPS-300 OPERATING INSTRUCTIONS
5.0 OPERATING PROCEDURES
Before using the CBPS-300, operators
should familiarize themselves with the
CBPS-300 controls and indicators.
5.1 CBPS-300 Cable connection
A typical connection diagram of the CBPS300 is shown in Figure 3.0.
Figure 4.0 Typical CBPS-300 Connection Diagram
.
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CBPS-300 OPERATING INSTRUCTIONS
5.2 General Procedures
a. Ground the CBPS-300 to the substation
ground. (Item 11 in Figure 1.0.)
b. Disconnect Circuit breaker control
circuitry from the substation battery.
WARNING
Never connect the CBPS-300 control
signals to substation battery or live circuit.
Failure to follow this procedure will
damage the CBPS-300.
c. Plug the CBPS-300 power cable into a
power outlet.
WARNING
Always return the voltage control knob to
the zero position before connecting or
disconnecting the CBPS-300 test leads.
d. Connect the CBPS-300 positive and
negative cable clips to the appropriate
terminals of the trip coil.
e. Connect the CBPS-300 positive and
negative cable clips to the appropriate
terminals of the close coil.
f. Connect the CBPS-300 positive and
negative cable clips to the appropriate
terminals of the circuit breaker motor.
300. Failure to follow this procedure may
damage the CBPS-300.
5.3 Test OPEN Coil Procedure
The following procedures will allow the
operator to initiate an Open operation.
a. Make sure the CBPS-300 display voltage
is selected to display coil voltage. Press
Coil/Motor switch to display coil voltage.
b. Turn the voltage control knob to select
the desired test voltage. Observe test voltage
displayed on the LCD as shown below:
COIL VLTG: 120.0 V
NOTE
Allow 3 seconds after turning voltage
control knob for the voltage display to be
stable.
c. Press the control OPEN switch to energize
OPEN coil.
d. Observe OPEN coil was energized and
circuit breaker was opened.
e. If an over-current condition was detected,
the FAULT LED will be lit.
g. Turn voltage control knob to zero. Turn
on the CBPS-300 power. Observe that after
configuration data is displayed briefly, the
coil voltage is displayed on LCD as shown
below:
COIL VLTG: 0.0V
WARNING
Always turn the CBPS-300 voltage control
knob to zero before turning on the CBPS-
f. Check the OPEN coil connection. Press
RESET switch and go to step c to open
circuit breaker.
g. To end test, turn the voltage control knob
to zero position before turning off CBPS-
300.
5.4 Test CLOSE Coil Procedure
The following procedures will allow the
operator to initiate a CLOSE operation.
a. Make sure the CBPS-300 display voltage
is selected to display coil voltage. Press
Coil/Motor switch to display coil voltage.
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b. Turn the voltage control knob to select
the desired test voltage. Observe test voltage
displayed on the LCD as shown below:
COIL VLTG: 120.0 V
NOTE
Allow 3 seconds after turning voltage
control knob for the voltage display to be
stable.
c. Press the control CLOSE switch to
energize CLOSE coil.
d. Observe CLOSE coil was energized and
circuit breaker was closed.
CBPS-300 OPERATING INSTRUCTIONS
b. Turn the voltage control knob to select
the desired test voltage. Observe test voltage
displayed on the LCD as shown below:
MOTOR VLTG: 120.0 V
NOTE
Allow 3 seconds after setting voltage control
knob for the voltage display to be stable.
c. Hold the MOTOR switch to energize
circuit breaker charging motor.
d. Observe circuit breaker charging motor is
energizing.
e. Release switch after spring was charged.
e. If an over-current condition was detected,
the FAULT LED will be lit.
f. Check the CLOSE coil connection. Press
RESET switch and go to step c to close
circuit breaker.
g. To end test, turn the voltage control knob
to zero position before turning off CBPS-
300.
WARNING
Always return the voltage control knob to
the zero position before connecting or
disconnecting the CBPS-300 test leads.
5.5 Energize Spring Charging Motor
Procedure
The following procedures will allow the
operator to energize circuit breaker charging
motor.
a. Make sure the CBPS-300 display voltage
is selected to display coil voltage. Press
Coil/Motor switch to display motor voltage.
f. If an over-current condition was detected,
the FAULT LED will be lit.
g. Check motor lead connection. Press
RESET switch and go to step c to energize
charging motor.
h. To end test, turn the voltage control knob
to zero position before turning off CBPS-
300.
WARNING
Always return the voltage control knob to
the zero position before connecting or
disconnecting the CBPS-300 test leads.
5.6 Remote control Mode
The CBPS-300 can be control by the
Vanguard Instrument circuit breaker timers
(CT-6500, CT-7000, CT-7500). The
following procedures allow the user to
operate the CBPS-300 with the Vanguard
Instrument timers.
a. Connect the initiate cable from the CTXXX timer to the CBPS-300.
b. Turn the voltage control knob to zero.
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c. Turn on the CBPS-300.
d. Turn the voltage control knob to select
the desired test voltage. Observe test voltage
displayed on the LCD as shown below:
COIL VLTG: 120.0 V
NOTE
Allow 3 seconds after turning voltage
control knob for the voltage display to be
stable.
e. Initiate Open or Close command from the
circuit breaker timer.
CBPS-300 OPERATING INSTRUCTIONS
f. Observe circuit breaker operated.
g. To end test, turn the voltage control knob
to zero position before turning off CBPS-
300.
WARNING
Always return the voltage control knob to
the zero position before connecting or
disconnecting the CBPS-300 test leads.
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CBPS-300 OPERATING INSTRUCTIONS
1710 Grevillea Court, Ontario, CA 91761, USA
Phone: 909-923-9390 Fax: 909-923-9391
Website: http//www.vanguard-instruments.com
CBPS-300 04/01/03:
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