TIME MARK 2744 Manual

MODEL 2744
3-Phase Over Current
Monitor
For Motor Jams
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Monitors over current
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Fail-safe design
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Automatic or manual reset
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Adjustable start delay timer
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For use on motors, pumps, conveyors, etc.
DESCRIPTION
The Model 2744 3-Phase Over Current Monitor is designed
to monitor the current level of a three-phase line or to compare
the currents of three single-phase lines.
If one or more current inputs rises above the trip level after the
start delay has expired, the internal relay will de-energize.
An adjustable start delay of 5 to 15 seconds will prevent
nuisance tripping on start up.
adjustable from 1 to 5 amps, and matching current
transformers are available to extend the current range of the
monitor.
The Model 2744 will automatically reset when the current fault
is corrected. An external manual reset can be added by
installing a normally closed switch between the terminals
marked RESET.
TYPICAL APPLICATION
Over-current; auto reset; ≤ ≤ 5 amps
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
The current trip point is
Shows No Power Applied
SPECIFICATIONS
Model
Supply voltage 20-28VAC
Max supply voltage
Power consumption
Transient protection
Frequency range
Input current
Max. input current
Current range
Start delay
Dead band
Contact rating
Expected relay life Mech: 10 million operations
Elec:
Operating temperature
Enclosure material
Weight
DIMENSIONS
3.5
2.25
4.5
2744-24 2744-120 2744-220
100-130VAC 190-250VAC
30V 140V 260V
1.5 Watts max.
2500 VRMS for 10 msec
50 - 400 Hz
1-5 amps ±5%
40 amps for 2 sec
1-5 amps ± 5%
5 to 15 sec ± 5%
4% max.
DPDT 10A at 240 VAC resistive
100,000 ops at rated load
- 40º to +131º F
ABS plastic
1 lb. 5.9 oz.
3.125
4.0
4.8
1 1 4 4 0 E a s t P i n e S t r e e t
T u l s a , O k l a h o m a 7 4 1 1 6
August 2003
© 2003
TIME MARK CORPORATION
TIME MARK is a division of