Battery & DC Systems
The station battery and DC system is what holds protection and control together when the substation loses AC. We follow IEEE 450 and 1188 schedules on lead-acid and nickel-cadmium banks, run capacity discharges where the application calls for it, and document the results so the next inspector sees a real trend, not a checkbox.
- Cell-by-cell impedance / conductanceIEEE 450 / IEEE 1188 / IEEE 1106
- Capacity discharge testingIEEE 450 / IEEE 1188
- Float and equalize voltage measurements
- Electrolyte specific gravity and temperature
- Charger output and ripple verification
- Ground detection and DC distribution survey
- Battery replacement and disposal
IEEE 450 (vented lead-acid) · IEEE 1188 (VRLA) · IEEE 1106 (NiCd) · IEEE 484 (installation)
Vented lead-acid (VLA), valve-regulated lead-acid (VRLA), and nickel-cadmium (NiCd) station batteries up through 250 VDC. DC distribution panels, chargers, and grounding.
Every visit ends with a documented report: raw test data, calibrated instrument records, anomaly findings with severity ranking, photos, and a clear recommended-action list. Trends are tracked across visits.
Send a scope or a list of assets and we’ll respond within one business day with crew availability and a proposal.
Documented acceptance tests on new substation equipment before energization.
NFPA 70B and IEEE-aligned periodic testing to keep substation equipment in service.
DGA, oil quality analysis, TTR, Doble power factor, and SFRA on power transformers.
Contact resistance, timing, HiPot, and primary injection on oil, vacuum, and air breakers.
VLF tan delta, partial discharge, insulation resistance, and HiPot on medium-voltage cable.
Thermographic surveys of energized substations with documented anomaly reports.
24/7 availability with same-day or next-day field dispatch.
Routine and detailed walkdowns — safety, asset condition, NERC PRC-005 readiness.