MV Switchgear Commissioning Checklist
Free download · A4 (210 × 297mm)
Commission medium-voltage switchgear safely with this comprehensive A4 checklist covering 13 sections per IEC 62271 and IEEE C37. Includes switchgear room environmental check, SF6 gas pressure verification, primary injection test, contact resistance (Ductor) test, insulation resistance and hi-pot test, vacuum bottle integrity test, circuit breaker timing test, protection relay secondary injection, interlocking and safety mechanism test, earthing switch operation, CT/VT ratio and polarity verification, busbar alignment and torque, and SCADA/RTU communication test.
What's Included
How to Print
- ●Print on standard A4 paper (80gsm is fine)
- ●Black & white printing works perfectly
- ●Photocopy and distribute to entire site teams
- ●Fill in project details before photocopying
- ●File completed checklists for audit trail
Try the Interactive Calculator
Need precise calculations beyond quick reference? Try our free online calculator with full clause references and professional report output.
Open CalculatorRelated Downloads
IEC 61439 Commissioning
Download a free switchboard commissioning checklist aligned to IEC 61439-1/2. Covers visual inspection, insulation resistance, busbar torque, protection settings, earth continuity, and functional testing. No signup required.
Short-Circuit Record
Download a free short-circuit calculation record template Excel per IEC 60909-0:2016. Columns for node impedance, Ik", ip peak, breaking current, thermal withstand, and equipment rating verification. No signup required.
IR Test Record
Download a free insulation resistance test record template Excel per IEC 60364-6 and BS 7671. Columns for circuit data, test voltage, L-N, L-E, N-E readings, temperature, humidity, and pass/fail. No signup required.
Frequently Asked Questions
What is an MV switchgear commissioning checklist?
An MV switchgear commissioning checklist ensures systematic verification of all medium-voltage (1kV–36kV) switchgear components before energisation. It covers electrical tests (primary injection, hi-pot, contact resistance), mechanical checks (breaker timing, interlocks), and protection verification per IEC 62271 and IEEE C37.
What tests should MV switchgear commissioning include?
Key tests include SF6 gas pressure verification, primary injection test, contact resistance (Ductor) measurement, insulation resistance and hi-pot test, vacuum bottle integrity check, circuit breaker open/close timing, protection relay secondary injection, CT/VT ratio and polarity verification, and interlocking mechanism test.
What is an acceptable contact resistance for MV circuit breakers?
Typical contact resistance values are below 100 µΩ for new vacuum and SF6 breakers, measured using a Ductor (micro-ohmmeter) at 100A DC minimum. Values should be compared against manufacturer specifications. An increase of more than 50% from baseline indicates contact deterioration requiring maintenance.