Time Mark 263 Data Sheet
MODEL 263
TIME MARK is a division of
2.08"
.47"
5.5"
.203
dia. typ.
3.0"
3.88"
5.5"
3.0"
3.88"
.203
dia. typ.
Manua l Reset Button
(man ual ve rsion on ly)
6.06"
3-Phase Monitor
Detects Phase Loss or Reversal
and Low Voltage
400Hz and Gold Contact Options
Automatic or Manual Reset
UL Recognized and CSA Certified
DESCRIPTION
The Model 263 continuously monitors 3-phase power systems
for phase loss, low voltage and phase reversal. The monitor
consists of a solid-state sensing circuit, driving an
electromechanical relay.
Applying correct voltage and phase rotation energizes the
relay. When properly adjusted, a fault condition will cause the
relay to de-energize, even when regenerated voltage is
present.
When the fault is corrected, the Model 263 automatically
resets. A manual reset version is also available. The SG
Model has silver with gold flash contacts for low current
applications.
The Model 263 does not require a neutral connection, and can
be used on Wye or Delta systems. Each of the five different
voltage ranges is adjustable to allow the monitor to be set for
existing conditions. NORMAL and TRIP LED indicators are
provided to aid in adjustment and system troubleshooting.
DIMENSIONS
SPECIFICATIONS
AUTO Reset
MANUAL Reset
GOLD-AUTO Reset
GOLD-MAN Reset
Nominal AC voltage
(phase to phase)
Adjustment Range 85-120V 160-240V 380-480V 450-575V 300-400V
Frequency 60Hz 60Hz 60Hz 60Hz 50Hz
Power Consumption
Transient Protection 2500 VRMS for 10ms
Repeat Accuracy
Response Time 50ms
Dead Band Approximately 2%
Output Contacts
Expected Relay Life Mech: 10 million operations
Operating Temp - 20° to +131° F
Humidity Tolerance 0 - 97% w/o condensation
Enclosure Material ABS plastic
Mounting surface
Weight
Agency Approvals ALL VERSIONS - UL Recognized and CSA Certified
A263
A263M
A263SG
A263SGM
120VAC 208/240VAC 480VAC 575VAC 380VAC
0.75W 1.5W 4.5W 7.5W
All SG models: SPDT silver w/gold flash 5 amps at 240VAC resistive
All other models: SPDT 10 amps at 240VAC resistive
El ec: 100,000 operations at rated load
B263
B263M
B263SG
B263SGM
± 0.1% of setpoint (fixed conditions)
C263
C263M
C263SG
C263SGM
9.5 oz
D263M
D263SG
D263SGM
D263
EX263
EX263M
EX263SG
EX263SGM
4.5W
11/2011
© 2011 TIME MARK CORPORATION
MODEL
263
MODEL 263
TIME MARK is a division of
3-Phase 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 263.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
INSTALLATION
Connect the 3-phase wires to the terminals marked A, B and C.
The control wiring will be connected to the opposite end of the
unit, to the terminals with the contact markings. Markings on
the unit are the failed condition of the contacts.
AUTOMATIC RESET VERSIONS:
Apply power. If the contacts do not transfer (TRIP LED-Off),
check that all three phases are present and of the correct
voltage.
If all phases are correct, rotate the VOLTS adjustment
potentiometer counter-clockwise, to the low position.
If the contacts still do not transfer, remove power from the unit.
Reverse any two of the three input wires and re-apply power.
The contacts should transfer to the energized condition; N.O.
contact-closed, NORMAL LED-On.
MANUAL RESET VERSIONS:
Apply power and press the RESET button. If the contacts do
not transfer (TRIP LED-Off), check that all three phases are
present and of the correct voltage.
If all phases are correct, rotate the VOLTS adjustment
potentiometer counter-clockwise, to the low position and press
the RESET button.
If the contacts still do not transfer, remove power from the unit.
Reverse any two of the three input wires and re-apply power.
Press the RESET button. The contacts should then transfer to
the energized condition; N.O. contact-closed, NORMAL LEDOn.
TYPICAL APPLICATION
Shown De-Energized
ADJUSTMENT SETTINGS
NOTE: During adjustment, you may wish to install a jumper
across the control contacts, to prevent cycling the load on and
off.
AUTOMATIC RESET VERSIONS:
Rotate the VOLTS adjustment slowly clockwise, until the
contacts transfer to the failed condition (TRIP LED-On).
Slowly turn the adjustment back counter-clockwise, until the
contacts reset to the normal condition (TRIP LED-Off).
Remove the jumper, if installed. This setting will be correct for
most applications.
If nuisance tripping occurs, turn the adjustment slightly farther
counter-clockwise. In adjustments to eliminate nuisance
tripping, the VOLTS adjustment should be rotated in very
small increments, until the true nuisance trips are eliminated.
MANUAL RESET VERSIONS:
During adjustment, you will need to press and hold the RESET
button.
Rotate the VOLTS adjustment slowly clockwise, until the
contacts transfer to the failed condition (TRIP LED-On). A
slight buzz in the contacts may occur when the relay is at the
transfer point to the failed condition. This is normal and will
not occur in operation.
Slowly turn the VOLTS adjustment back counter-clockwise,
until the contacts reset to the normal condition (NORMAL LED
-On).
Release the RESET button, and remove the jumper, if
installed. This setting will be correct for most applications.
If nuisance tripping occurs, turn the adjustment slightly farther
counter-clockwise. In adjustments to eliminate nuisance
tripping, the VOLTS adjustment should be rotated in very
small increments, until the true nuisance trips are eliminated.
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.
11/2011
© 2011 TIME MARK CORPORATION
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