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About the service
At Juniors Wireless, LLC, we provide comprehensive medium voltage (MV) testing services to ensure the safety, performance, and reliability of electrical systems operating between 1kV and 35kV. Whether during commissioning, preventive maintenance, or after repairs, our testing procedures verify the integrity of cables, terminations, switchgear, and associated components.
Our certified technicians use calibrated, industry-grade test equipment to perform insulation resistance, high-potential (hi-pot), and continuity tests in accordance with NETA, IEEE, and NFPA standards. Each test is documented, and results are reviewed with the client to support safe energization or identify potential issues early.
Services offered
- Insulation Resistance Testing (Megger)
- DC and AC Hi-Pot Testing
- Continuity and phase verification
- Partial discharge and leakage current testing
- Cable sheath testing and fault location
- Switchgear and transformer testing
- Test reports with pass/fail status and recommendations
- Our certified technicians use calibrated, industry-grade test equipment to perform insulation resistance, high-potential (hi-pot), and continuity tests in accordance with NETA, IEEE, and NFPA standards. Each test is documented, and results are reviewed with the client to support safe energization or identify potential issues early.
- New construction commissioning
- Pre-energization testing after cable pulls or terminations
- Periodic preventive maintenance
- Fault diagnosis and troubleshooting
- Utility interconnection compliance
Popular questions
Why Is Medium Voltage Testing Important?
Testing verifies that cables, terminations, and equipment are functioning safely and correctly before being energized. It helps prevent costly failures and ensures compliance with industry standards.
What Is the Difference Between Megger and Hi-Pot Testing?
Megger testing checks insulation resistance at lower voltages, while hi-pot testing applies higher voltages to stress the insulation and detect weak points or defects.
Do You Provide Documentation for Inspections?
Yes. We deliver detailed test reports with voltage levels, resistance values, test durations, and clear pass/fail results for each tested component.
Can You Test Underground or Long-Run Cables?
Absolutely. We are equipped to test long-run MV cables, including those installed underground, using portable or trailer-mounted test equipment as needed.
How Often Should Medium Voltage Systems Be Tested?
Industry best practices recommend testing during commissioning and at regular intervals (typically every 1–3 years) depending on usage, environment, and criticality of the system.
