
What Is a Phase Restoration (Add-a-Phase) Transformer and When Do Utilities Use One?
When a utility crew responds to a power outage caused by an underground cable fault, they often need a fast way to restore service without

When a utility crew responds to a power outage caused by an underground cable fault, they often need a fast way to restore service without

When wheeled units cannot reach the meter, the Trident temporary power restoration system lets linemen carry in lightweight 45-lb modules for one-person deployment in backyards, stairs, alleys, and rough terrain. Supports up to 200 A service.

When underground cable faults cause a missing hot leg or neutral, utilities need fast, reliable ways to restore power at the meter. This factual comparison examines the leading Servisavor alternatives – including the Von Corp Servisavor, SNC RESTORE-LITE, and Bridgeport PowerBack – focusing on weight, maneuverability, protection systems, lead time, and real-world deployment for linemen and fleet managers. See which device best fits your crews and outage response needs.

Temporary power restoration devices give utilities a faster and safer way to restore power after underground cable faults. This post explains the key benefits and how modern equipment like PowerBack and Trident outperforms older, heavier solutions.

Discover the benefits of Temporary Power Restoration Devices for any utility company that wants to keep customers happy while they fix the power issues.
Portable auto-transformers that instantly restore lost 120V or neutral power at the meter.
3-phase toroidal power towers for industrial, BESS, and datacenter voltage management.
ABYC-compliant, UL Recognized shore-power isolation in a corrosion-resistant puck design.
Medical-grade isolation with ultra-low leakage current — IEC 60601-1 / UL 60601-1 compliant.
Custom-designed, 30 VA – 70 kVA. UL, CSA, CE, IEC 60601-1 certified.
Custom inductors, filter chokes, and power inductors — amorphous core, air-core foil, de-buzzing.
GOSS toroidal, O-, C-, and E-cores — wound, heat treated, and epoxy coated.
Cuffed foil laminates for superior electrostatic and grounding shields in transformers.
Precision flat magnet and specialty wire built for thermal and mechanical reliability.