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.
ll Detects Phase Loss or Reversal
and Low Voltage
ll 400Hz and Gold Contact Options
ll Automatic or Manual Reset
ll UL Recognized and CSA Certified
MODEL 263
3-Phase Monitor
TIME MARK is a division of
Telephone: Main - (918) 438-1220
Sales - (800) 862-2875
Fax: (918) 437-7584
E-mail: sales@time-mark.com
Internet: http://www.time-mark.com
Doc No. 87A124 11/02
© 2002 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
SPECIFICATIONS
AUTO Reset
MANUAL Reset
GOLD-AUTO Reset
GOLD-MAN Reset
A263
A263M
A263SG
A263SGM
B263
B263M
B263SG
B263SGM
C263
C263M
C263SG
C263SGM
D263
D263M
D263SG
D263SGM
EX263
EX263M
EX263SG
EX263SGM
Nominal AC voltage
(phase to phase)
120 VAC 208/240VAC 480 VAC 575 VAC 380 VAC
Adjustment Range 85-120V 160-240V 380-480V 450-575V 300-400V
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 50 Hz
Power Consumption
0.75W 1.5W 4.5W 7.5W
4.5W
Transient Protection 2500 VRMS for 10msec
Repeat Accuracy
± 0.1% of setpoint (fixed conditions)
Response Time 50 msec
Dead Band Approximately 2%
Output Contacts
All SG models: SPDT silver w/gold flash 5 amps at 240VAC resistive
All other models: SPDT 10 amps at 240 VAC resistive
Expected Relay Life Mech: 10 million operations
Elec: 100,000 operations at rated load
Operating Temp - 40° to +131° F
Humidity Tolerance 0 - 97% w/o condensation
Enclosure Material ABS plastic
Mounting surface
Weight
9.5 oz
Agency Approvals ALL VERSIONS - UL Recognized and CSA Certified
2.08"2.08"
.47".47"
5.5"5.5"
dia. typ.dia. typ.
3.0"3.0"
3.88"3.88"
5.5"5.5"
3.0"3.0"
3.88"3.88"
dia. typ.dia. typ.
Manual Reset ButtonManual Reset Button
(manual version only)(manual version only)
6.06"6.06"
DIMENSIONS
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