II. Components
Parts and assemblies to be reconditioned under Section 2100 standards medium voltage disconnect switches include but are not limited to:

• Enclosure
• Interlocks
• Interphase Barriers
• Arc Extinguishers
• Arcing Contacts or blades
• Live parts such as fuse holders
• Operating mechanism
• Spring charging motor
• Push rods
• Vacuum bottles
• Shunt trip assembly
• Thermostat
• Space heater
• Door closures
• Viewing window
• Limit switches
• Control circuit
• Voltage transformer
• Current transformer
• Control power transformer
• Protective relays
• Insulating materials or devices
• Bus
• Bus barriers
• Cable terminations

III. Testing and Inspection
The PEARL Section 2100 Medium Voltage Disconnect Switch 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 medium voltage disconnect switches standards. The medium voltage disconnect switches standards continues with a "Recondition Evaluation," which is a detailed inspection of all parts of the disconnect switch, including but not limited to the components listed above.

PEARL Section 2100 Medium Voltage Disconnect Switches reconditioning standards require the use of other standards covering major subassemblies that can also be reapplied as independent components. These may include:

• Section 1400: Low Voltage Transformers
• Section 1700: Protection Relays

Section I for PEARL Section 2100 Medium Voltage Disconnect, begins with reference table identification and identification of the test equipment necessary to complete the standard, including one or more:

• Insulation Resistance Test Set (Megohmeter) 2500 Vdc minimum
• DC Overpotential Test Set (Hipot)

One of the following pieces of test equipment also is required to perform the contact resistance testing requirements of this reconditioning standard:

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

Section II Recondition Evaluation-Inspection and Testing identifies each component and assembly part that must be inspected to determine the components viability and scope of reconditioning required to bring the component back to original operating condition. Results and notes from the pre-reconditioning inspection and test are recorded in the PEARL Reconditioning Evaluation and Test forms that accompany each respective standard.

IV. Reconditioning
Section III Reconditioning Procedures describes how to recondition each component and assembly, beginning with the disassembly of the motor control unit down to its major subassemblies. Reconditioning for medium voltage disconnect switches includes:

• Disassembly
• Cleaning
• Degreasing
• Deburring
• Plating
• Painting
• Lubricating
• Adjusting

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 medium voltage disconnect switches assembly is eligible for a Blue PEARL Reconditioned Quality Seal.

Link to the full Standard Number 2110
    Medium Voltage Air Disconnect Switches Enclosed Manually Operated Non-Fusible
Link to the full Standard Number 2111
    Medium Voltage Air Disconnect Switches Enclosed Manually Operated Fusible
Link to the full Standard Number 2120
    Medium Voltage Air Disconnect Switches Enclosed Manually Operated Non-Fusible
Link to the full Standard Number 2121
    Medium Voltage Air Disconnect Switches Enclosed Electrically Operated Fusible
Link to the full Standard Number 2130
    Medium Voltage Vacuum Disconnect Switches Manually Operated Non-Fusible - PROPOSED*
Link to the full Standard Number 2131
    Medium Voltage Vacuum Disconnect Switches Manually Operated Fusible - PROPOSED*
Link to the full Standard Number 2140
    Medium Voltage Vacuum Disconnect Switches Electrically Operated Non-Fusible - PROPOSED*
Link to the full Standard Number 2141
    Medium Voltage Vacuum Disconnect Switches Electrically Operated 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.