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Technical
Specification & Ratings | Instruction
Manual | Installation
Testing Procedures
| Converting Contacts | Standard
Wiring Diagram
Electrical Seal
Wiring Diagram | Panel
Cutout for Semi-Flush Cases
Projection Unit
Mounting | Schematics
of LJ 41, 42, 43
TESTING PROCEDURES
Electrical
Operation
The relay can be tested by applying a rated voltage source which is
capable of providing the necessary amperage momentarily. This will
operate the relay electrically and change the state of all contacts. (note:
During electrical operation, the relay will hold its contacts in the
operated position until the electrical source has been removed from the
coil.)
Manual Operation
For testing purposes, the relay can also be operated manually be
inserting a small probe (e.g. #2 Phillips Screwdriver) through the
center hole of the nameplate. Pushing in on this probe will move the
armature, and thereby operate the contacts and target assembly.
Test Switches
As an option, test switches are provided on both sides of each contact
and the operating coil. The test switches are used to isolate each
individual contact or the operate coil for testing purposes. Small
banana plug electrical connectors (3/64" dia.) can be used to
electrically connect to the relay circuit at the test switches. Opening
the appropriate test switches will allow the user to operate the relay
while isolating it from the external circuits.
Important: When completed, be sure to close all test switches
and secure the test switch cover plate.
Target
Operation
A direct driven, manually resettable is standard on flush mount units.
When the relay operates, a bright orange target and a small black reset
tab are exposed,
Reset
After de-energizing the relay, pushing up the black tab will reset the
target. Target reset can only be accomplished manually.
Electrical
Seal-In Feature
An LJ relay with this option will maintain its operated position indefinitely
using a rated voltage source until reset by one of the methods below.
Due to internal space space requirements, an LJ12 which is ordered with
this option will be supplied in a LJ13 case. (note: reduces number of
usable contacts by one.)
Local Reset:
When reset is desired, depress the small push-button located on the
front panel of the relay. This will break the holding current allowing
the relay to reset.
Remote Reset:
Remote reset of the coil can also be accomplished by connecting a
controllable contact, such as a SCADA contact, in series with the
electrical seal-in.
Contact
Relay Associates for more information.
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