II. Components
Part and assemblies to be reconditioned under section 1100 standards include but are not limited to:

III. Testing and Inspection
The PEARL Section 1100 Low Voltage Disconnect Switches standards begin with the definition of the term “Reconditioning” as “the process of returning electrical equipment to safe and reliable operating condition based upon the design of the original manufacturer at the time of manufacturing.” This is followed by reference tables used to calculate test results and tolerances and the necessary test equipment required by the standard. The standard continues with a “Recondition Evaluation,” which is a detailed inspection of all parts of the low voltage disconnect switches, including but not limited to the components listed above.

The following test equipment is required to perform the testing requirements for the Low Voltage Disconnect Switches reconditioning standards:

• Digital Low Resistance Ohmmeter (DLRO - 10 amp unit is sufficient.)
• DC Current Source and a Millivoltmeter

The second part of the Section 1100 standards tell the reconditioning technician to test the disconnect switch for insulation resistance using a 1000Vdc or greater Megohmeter to identify weaknesses in insulation between current carrying and non-current carrying parts of the switch. Insulation isolates the enclosure or frame of the disconnect switch from the current carrying areas thus protecting users and bystanders. It also isolates the phases of the disconnect switch from each other protecting against phase-to-phase faults. Testing continues with a DLRO (digital low resistance ohmmeter) or a current source and millivoltmeter to test for resistance along the current carrying path within the disconnect switch, including bus connections and bus or contact pivot points. This test reduces the likelihood of heat build up anywhere along the current carrying path.

IV. Reconditioning
After “Reconditioning Evaluation”, Section 1100 standards continue with a “Reconditioning Section” that explains how to clean, polish, deburr, paint, lubricate, adjust or torque individual parts of the disconnect switch. The reconditioning steps are listed in a specific order to help the technician disassemble each subassembly in a logical order. After reconditioning, subassemblies can be reinstalled in the now cleaned and painted enclosure or frame.

Assembly of the reconditioned components and subassemblies is followed by final inspection and testing. As with all testing, inspection, and reconditioning operations, final inspection and test results are recorded onto the Evaluation and Test forms included with the standard. If a PEARL certified technician follows the reconditioning standard, the low voltage disconnect switches is eligible for a Blue PEARL Reconditioned Quality Seal.

Links to the full reconditioning standards for low voltage disconnect switches:

Link to the full Standard Number 1110
    Low Voltage Disconnect Switches Manually Operated Air Non-Fusible
Link to the full Standard Number 1114
    Low Voltage Disconnect Switches Manually Operated Air Fusible
Link to the full Standard Number 1130
    Low Voltage Disconnect Switches Manual Trip Power Non-Fusible
Link to the full Standard Number 1134
    Low Voltage Disconnect Switches Manual Trip Power Fusible
Link to the full Standard Number 1140
    Low Voltage Disconnect Switches Electric Trip Power Non-Fusible
Link to the full Standard Number 1144
    Low Voltage Disconnect Switches Electric Trip Power Fusible
Link to the full Standard Number 1150
    Low Voltage Safety Switches Single Throw Non-Fusible – PROPOSED*
Link to the full Standard Number 1154
    Low Voltage Safety Switches Single Throw Fusible – PROPOSED*
Link to the full Standard Number 1170
    Low Voltage Disconnect Switches Panelboard Non-Fusible
Link to the full Standard Number 1174
    Low Voltage Disconnect Switches Panelboard Fusible
Link to the full Standard Number 1180
    Low Voltage Safety Switches Double Throw Non-Fusible – PROPOSED*
Link to the full Standard Number 1184
    Low Voltage Safety Switches Double Throw Fusible – PROPOSED*

Link to view and/or download PEARL's 137 reconditioning standards for electrical equipment.

* A proposed standard is one which as been created and offered to technical committee participants for vetting. A proposed standard may go through any number of drafts, revisions and changes before being accepted. All proposed PEARL Standards are only in their first draft form currently and are NOT yet recommended for use in the field.