Time Mark 2002Y Data Sheet
MODEL 2002Y
TIME MARK is a division of
3-Phase Voltage
Unbalance Monitor
⚫ Detects Unbalanced Voltages On
Wye Connections
⚫ Percent of Unbalance Adjustment
⚫ Automatic Reset
⚫ Can Energize Relay w/ Only 1 Phase
and Neutral Connection
DESCRIPTION
The Model 2002Y 3-Phase Voltage Unbalance
Monitor is designed to continuously monitor a three-
phase line with a neutral connection 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 2002Y 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.
DIMENSIONS
SPECIFICATIONS
Model
2002Y–XXX/YYY
Phase-Neutral Voltage 69VAC 120VAC 138VAC 220VAC 240VAC 277VAC
Phase-Phase Voltage 120VAC 208VAC 240VAC 380VAC 415VAC 480VAC
Voltage Range ± 15% ± 15% ± 15% ± 15% ± 15% ± 15%
Frequency 50Hz - 60Hz
Power Consumption
(per phase max)
Transient Protection 2500VRMS for 10ms
Repeat Accuracy ± 0.1% (fixed conditions)
Unbalance Adjustment 2% to 10%
Response Time 150ms
Reset Time Fixed 1 sec
Dropout Time Adjustable 1 to 20 seconds
Reset Type Automatic
Dead Band 0.5% max
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.
2002Y69/120
Elec: 100,000 operations at rated load
2002Y-
2002Y-
120/208
138/240
2.0W 2.0W 2.0W 2.0W 2.0W 2.0W
2002Y-
220/380
2002Y-
240/415
277/480
2002Y-
11440 Ea s t P ine St r ee t
Tu l sa , Ok l ah o ma 74 1 16
05/2019
© 2019 TIME MARK CORPORATION
MODEL 2002Y
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 2002Y.
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 counter-
clockwise.
Connect the 3-phase wires to the terminals marked ‘A’,
‘B’ and ‘C’ and neutral connection to ‘N’.
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. The percentage of unbalance is
calculated as follows using phase to neutral voltages:
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.
Vmax - Vmin
% Unbalance = —————–
Vmax
TYPICAL MOTOR APPLICATION
Shows No Power Applied
TYPICAL SHUNT BREAKER APPLICATION
Shows No Power Applied
11440 Ea s t P ine St r ee t
Tu l sa , Ok l ah o ma 74 1 16
05/2019
© 2019 TIME MARK CORPORATION
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