Time Mark 200 Data Sheet
.19 dia. typ.
6.06"
5.5"5.5"
3.88"
3.0"
2.08".62"
MODEL 200
TIME MARK is a division of
3-Phase Voltage
Unbalance Monitor
Detects Unbalanced Voltages
Percent of Unbalance Adjustment
Automatic Reset
DESCRIPTION
The Model 200 3-Phase Voltage Unbalance Monitor
is designed to continuously monitor a three-phase line
for unbalanced voltage conditions.
This device will only energize the relay if an unbalance
exists. Zero volts on all three phases is considered a
balanced condition. This allows the Model 200 to be
used with shunt breakers, so that main power can be
restored without resetting breakers.
The solid-state sensing circuit drives an internal
electromechanical relay. Indicator lights on the monitor
show when the voltage balance is within an acceptable
range; when an unbalance exists; and when the relay is
actually tripped.
When an acceptable voltage balance is reapplied, the
Model 200 will automatically reset the relay.
DIMENSIONS
SPECIFICATIONS
Model A200 B200A B200B C200 D200 EX200
Nominal AC Voltages 120VAC 208VAC 240VAC 480VAC 575VAC 380VAC
Voltage Range ± 15% ± 15% ± 15% ± 15% +5 to -15% ± 15%
Frequency 60Hz 60Hz 60Hz 60Hz 60Hz 50Hz
Power Consumption
(per phase)
Transient Protection 2500VRMS for 10ms
Repeat Accuracy
Unbalance Adjustment 2% to 10%
Response Time 100ms
Reset Time Fixed 1 sec
Dropout Time
Reset Type Automatic
Dead Band
Contact Rating DPDT 10 amps at 240VAC resistive
Expected Relay Life Mech: 10 million operations
Operating Temp - 20° to +131° F
Humidity Tolerance 0-97% w/o condensation
Mounting Surface
Enclosure Material ABS plastic
Weight 10 oz.
0.5W
Elec: 100,000 operations at rated load
1W 1W 2W 2W 2W
± 0.1% (fixed conditions)
Adjustable 0.2 to 20 seconds
0.5% max
11/2011
© 2011 TIME MARK CORPORATION
MODEL 200
Model 200
L1
L2
L3
Shunt
Trip
Breaker
Model 410
1 4
3
2
Motor
Model
200
M
O/L's
M
Start
Stop
Control
voltage
Optional
alarm circuit
M
M
L2
L3
L1
M
TIME MARK is a division of
3-Phase Voltage Unbalance Monitor
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
GENERAL SAFETY
POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 200.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
INSTALLATION
Set PERCENT OF UNBALANCE fully clockwise.
Set TRIP DELAY IN SECONDS fully counterclockwise.
Connect the 3-phase wires to the terminals marked ‘A’,
‘B’ and ‘C’.
Connect the control wires to the terminals with the relay
contact markings. The contact markings on the unit are
the NORMAL or OFF condition of the contacts.
Apply power. NORMAL indicator should be ON.
ADJUSTMENT
Rotate the PERCENT OF UNBALANCE adjustment pot
to the desired setting.
Set the TRIP DELAY adjustment to the desired amount
of delay to prevent nuisance trips.
Should nuisance trips occur, increase the TRIP DELAY
IN SECONDS setting. Any adjustments should be
made in very small increments.
WARRANTY
This product is warranted to be free from defects in
materials and workmanship, and is covered by our
exclusive 5-year Unconditional Warranty. Should
this device fail to operate for any reason, we will repair
it for five years from the date of manufacture. For
complete warranty details, see the Terms and
Conditions of Sales page in the front section of the
Time Mark catalog or contact Time Mark at 1-800-862-
2875.
TYPICAL MOTOR APPLICATION
Shows No Power Applied
TYPICAL SHUNT BREAKER APPLICATION
Shows No Power Applied
11/2011
© 2011 TIME MARK CORPORATION
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