Man Hours 1.5
Special Instructions:
1. Schedule outage with operating personnel.
2. Obtain and review manufacturer's instructions, and circuit diagrams for
relays and test set.
3. De-energize, tag, and lock out circuit.
4. All tests shall conform to the appropriate ASTM test procedures and the
values used shall conform to the manufacturer's and ANSI Standards
specifications.
Items to Check & Initial Completion:
1. Visual and mechanical inspection.
a.___ Disconnect any potential transformers (by Low Voltage Links, etc.) to
prevent dangerous High Voltage back feed.
b.___ Remove relay from case and visually inspect. Also, clean, mechanically
and visually inspect panel wiring.
c.___ Examine condition of bearings.
d.___ Check all connections for tightness.
e.___ Examine contacts and contact backstops. Burnish contacts.
f.___ Clean and remove foreign matter from permanent magnet and disc.
g.___ Examine case connections.
h.___ Inspect disc restraint spring for proper tension and for damage.
2. Electrical test:
a.___ Perform pickup test to determine the minimum/maximum voltage required
to operate the trip circuit. Adjust as per manufacturer's
instructions.
b.___ Perform time current or voltage characteristic test according to system
requirements and settings and manufacturer's instructions.
c.___ Test target and/or seal-in operation.
d.___ Calibrate panel volt master within 3 percent of test meter reading.
e.___ Test associated wiring as required, avoiding any unintentional
transformer high voltage back feed.
f.___ Mechanically operate the relay to ascertain that the relay will
electrically operate the associate devices as originally
designed/desired.
g.___ Record results of inspection and test and report deficiencies.
h.___ Remove tags and lock, return circuit to service.
Tools and Materials:
1. Standard Tool kit.
Plus Insulated pliers and screwdrivers
Wire strippers
Wire crimpers
Voltmeter - Ohmmeter - Milliammeter
Clamp on meter(volt - ohm - amp meter)
Soldering kit
1/8" 25' fish tape
Burnishing tool
2. Relay test set
3. Cleaning materials
4. Test blocks and jumpers
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