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 Facilities depend on electrical power to operate properly every day. Thorough maintenance ensures the safe, reliable operation of your electrical equipment. Such regular maintenance and testing can help prevent expensive equipment failures, unexpected outages and accidents causing injury or death.
 DYMAX can maintain your electrical system in optimal operating condition by performing all necessary switchgear inspections, tests, cleaning and calibration. Our maintenance and testing programs follow electrical testing standards developed by NETA (The International Electrical Testing Association) , which is recognized by the American National Standards Institute (ANSI) as an accredited standards developer.
 Maintenance testing may be performed on specific switchgear parts. For example, contactor circuit operation and circuit breaker close and trip times can be checked against factory information. Sluggish response times could suggest that more thorough maintenance is required.
Choose this maintenance testing guide for the recommended frequency of electrical equipment tests. Select this NETA maintenance matrix for a guide to frequency of maintenance or service.
Basic maintenance testing often includes:
- Megger testing of insulation
- A check of control and power connections to ensure the integrity of connections
- General cleanliness of the equipment
- A resistance check of the power circuit contact
- Examination of overcurrent devices performance by injecting test currents
- Comparison of the trip times with normal performance data
You can examine a sample maintenance specification per NETA standards at Inspection and test procedures: Switchgear and Switchboard Assemblies: 7.1
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