DESCRIPTION
The Model 269 Over & Under 3-Phase Monitor continu-
ously monitors 3-phase lines for high voltage, low voltage,
phase loss or phase reversal. This device features a solid-
state voltage and phase angle sensing circuit, which drives
a SPDT output relay.
The Model 269 is independent of the system load, and
may be used on any horsepower motor. When phase
sequence is correct, and the voltage remains between the
upper and lower trip points, the output relay remains
energized. When a fault condition is sensed, the output
relay drops out.
The Model 269 does not require a neutral connection, and
can be used on Wye or Delta systems. Each of the four
voltage versions can be adjusted over a wide range. An
adjustable trip delay (1-10 seconds) prevents nuisance
tripping. OVER and UNDER voltage failure indicators aid
in calibration and system troubleshooting.
SPECIFICATIONS
Model A269 B269 C269 EX269
Nominal AC Voltage
(phase to phase)
120VAC 208/240VAC 480VAC 380VAC
Adj Range - Upper
- Lower
110 - 145V
80 - 115V
210 - 280V
170 - 240V
400 - 540V
380 - 460V
350 - 450V
300 - 400V
Frequency 60 Hz 50 Hz
Power Consumption 1.5W 3W 6W 6W
Transient Protection 2500VRMS for 10 msec
Repeat Accuracy ± 0.1% of set point (fixed conditions)
Response Time Adjustable from 1-10 seconds ±5%
Reset Time 0.25 seconds
Reset Type Automatic
Dead Band Approximately 2%
Output Contacts SPDT 10A at 240VAC resistive
Expected Relay Life Mech: 10 million operations
Elec: 100,000 operations at rated load
Operating Temp - 40º to +130º F
Humidity Tolerance 0-97% w/o condensation
Enclosure Material ABS Plastic
Mounting Surface
Weight 9 oz.
Agency Approval UL Listed & CSA Certified
R
ll Monitors for High Voltage, Low Voltage,
Phase Loss & Phase Reversal
ll 4 Voltage Ranges
ll Automatic Reset
ll 5 Year Unconditional Warranty
MODEL 269
Over & Under
3-Phase Monitor
DIMENSIONS
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. 87A141 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
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