DESCRIPTION
The Model 265 3-Phase Monitor continuously monitors
3-phase Wye or Delta systems for phase loss, low
voltage and phase reversal. When properly adjusted,
the Model 265 Monitor will detect phase loss on a
loaded motor even when regenerated voltage is
present.
The solid-state sensing circuit drives an internal relay, in
a fail-safe configuration, i.e.; the relay is energized
when correct voltage and phase rotation are applied.
Operating power for the Model 265 is drawn from the 3-
phase lines being monitored. An adjustable timer delays
restarting of the load, allowing up to five minutes for
compressor head pressures to bleed off, in the event of
short-term power failures.
The Model 265 Monitor is not sensitive to line current,
and can be used with any size motor or compressor.
SPECIFICATIONS
AUTO Reset A265 B265 C265 D265 EX265
Nominal AC Voltage
(phase to phase)
120 VAC 208/240
VAC
480 VAC 575 VAC 380 VAC
Adjustment Range 85-120V 160-240V 380-480V 450-575V 300-380V
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 50 Hz
Power Consumption
0.25W 0.5W 1.5W 2.5W 1.5W
Transient Protection 2500 VRMS for 10msec
Repeat Accuracy
± 0.1% of set point (fixed conditions)
Response Time 50 msec maximum
Reset Time Adjustable - 20 to 300 seconds ±10%
Dead Band Approximately 2%
Output Contacts SPDT 10 amps at 240 VAC resistive
Expected Relay Life Mech: 10 million operations
Elec: 100,000 operations at rated load
Operating Temperature - 40° to +131° F
Humidity Tolerance 0 - 97% w/o condensation
Enclosure Material ABS plastic
Mounting Surface
Weight 10 oz.
Agency Approvals UL Recognized and CSA Certified
DIMENSIONS
3.0"
.20 dia. typ.
5.5"
6.06"
3.88"
2.08"
.62"
ll HVAC or Compressor Applications
ll Automatic Reset
ll Adjustable Restart Delay
ll Fast Trip Response
ll UL Recognized; CSA Certified
MODEL 265
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. 87A128 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
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