ADJUSTMENT
Note: During adjustment, you may want to install a
jumper across the control contacts or open circuit,
depending on your control configuration, to prevent
cycling the load on and off.
Rotate the VOLTAGE ADJUST to the desired percent of
nominal voltage, or slowly clockwise, until the contacts
transfer to the failed condition (LOW indicator-ON).
Slowly turn the adjustment counter-clockwise until the
contacts reset to the normal condition (LOW indicator-OFF;
NORMAL indicator-ON).
Remove the jumper from the control contacts, if installed.
This setting will be correct for most applications. If nuisance
tripping occurs, turn the VOLTAGE ADJUST slightly counter-
clockwise, or increase the trip delay time.
Any adjustments to the VOLTAGE ADJUST, to eliminate
nuisance tripping, should be made in small increments, until
the true nuisance trips are eliminated. Adjust the TRIP
DELAY and UNBAL ADJUST as required by the system.
TYPICAL APPLICATION - Shunt Breaker
MODEL 2500
MODEL 2501
3-Phase Monitor
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
Installation Instructions
INSTALLATION
Mount the Model 2500 or 2501 in a stable location,
observing all precautions outlined in the statement
above. Mounting hardware is not included.
Connect the control wiring to the terminals with the
contact markings (refer to the diagram on the unit).
Markings shown on the unit are in the power off
condition. Apply power.
If the contacts transfer (NORMAL indicator-Off), check
the LOW, REVERSE, and UNBALANCE indicators for a
possible fault condition. If no indicators are lit, check
that all three phases are present and of the correct
voltage.
If all phases are correct and the LOW indicator is ON,
rotate the VOLTAGE ADJUST until the light just goes
out.
If the UNBAL indicator is ON, rotate the UNBAL
ADJUST until the light just goes out.
NOTE: During adjustment you may find the UNBAL
ADJUST and the TRIP DELAY adjustment has no
effect. Check for phase loss.
If the REVERSE indicator is ON, remove power and
reverse any two of the three input wires and re-apply
power. The contacts should transfer to the normal
condition (normally-open contacts open, NORMAL indi-
cator-ON).
DANGER
• HAZARD OF ELECTRIC SHOCK, BURN OR
EXPLOSION
• POWER CONTROL & INSTRUMENT CIRCUITS MAY
BE SUPPLIED BY REMOTE SOURCES
• THIS DEVICE SHOULD ONLY BE INSTALLED OR
SERVICED BY QUALIFIED PERSONNEL
• TURN OFF ALL POWER SUPPLYING THIS DEVICE
BEFORE WORKING ON MONITOR
• FAILURE TO DO SO WILL RESULT IN DEATH OR
SEVERE PERSONAL INJURY
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. 87A429 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
WARRANTY
The Model 2500 and Model 2501 3-Phase Monitors are
covered by Time Mark Corporation’s exclusive 5-Year
Unconditional Warranty. Should this device fail, for any
reason, within five years from the date of purchase, we will
repair or replace it free. Contact the Time Mark Sales
department for further details.
To Next Page
Loading...