NFPA 70B Recommended Practice for Electrical Equipment Maintenance

AIR CIRCUIT BREAKER INSPECTION RECORD Plant

Date

Location

Serial No.

Mfr. Drawout

Type or Model Non-drawout

❏

Rating: Volts Operation:

Manual

❏

❏

Electrical

CL Fuses

❏

❏

Interrupting Amperes Remote Control

❏

ac

Induction Relays

Metal clad

❏

Amperes

 Volts clos e Protective Devices:

Switchboard

❏

❏

dc

❏

Direct Trips

❏

 Volts tr ip

ac

Direct Trips

❏

TD Setting

❏

dc

❏

❏

Inst. Setting

 Annual Inspection

Date

Date Inspector’s Initials

Inspector’s Initials  .   n  .    i   n  .    i   n  .    i   n  .    i   n   x    i   x   x   x   x   u   a   u   a   u   a   u   a   u   a    A    M   A    M   A    M   A    M   A    M

Contact Condition

Operating Mechanisms Checks Positive Close and Trip

Good —  Surface  Surface Smooth

Bushing and Pin Wear

Fair —  Minor  Minor Burns

Set Screws and Keepers

Poor —  Burned  Burned and Pitted

Protective Devices

Contact Check Pressure (Good, Weak, Bad)

Lubricate Wear Points Clean Pots and Replace Oil with Equipment Mfrs. Recommended Oil

Drawout Contacts Pressure (Good, Weak, Bad)

Insulation

Condition

 Alignment (Good, (Good, Bad)

Loose Connections

Lubricate (Must Do  —  Use a No-Oxide Lubricant by Mfr.)

Discolored Areas

 Arcing Assemblies Clean and Check the  Arc-Splitting Plates Surface Conditions Bushings

Corona Tracking Clean Surfaces Insulation Tests Phase to Phase (Megohm) Phase to Ground (Megohm) Test Operation

Clean and Check Surface Condition

Close and Trip Counter Reading (No. of Ops.) Electrical Load Peak Indicated Amperes

Remarks (record action taken when indicated by inspection or tests):

Other repairs recommended:

© 2013 National Fire Protection Association

FIGURE H.2 Typical Air Circuit Breaker Inspection Record. Record.

NFPA 70B