HEXING’s Single-Phase Automatic Recloser helps clear temporary faults on overhead feeders. It also isolates permanent faults and reduces extra fieldwork.
A temporary fault on an overhead line shouldn’t always lead to a lasting customer outage. When a fuse works or an upstream protection device trips, service may stay off. A crew must reach the site, check the line, and restore supply.
On long, rural, or distributed power lines, this process can take a long time. Repair personnel may go far distances, but the issue has fixed itself. Power companies face longer restoration times. They use more resources and have limited information about the fault before technicians arrive.
The Customer Problem: Temporary Faults Can Create Disproportionate Field Work
When every interruption requires manual inspection or fuse replacement, a short-lived line event can create a much longer operational response. The challenge is to restore service automatically when the fault has cleared while keeping a permanent fault isolated.
For utilities, the objective is not simply faster switching. It is to focus protection and field resources on the part of the network that actually needs attention.
How HEXING’s Single-Phase Automatic Recloser Works: Easy Fault Handling at the Feeder Edge
HEXING’s Single-Phase Automatic Recloser is an outdoor device. It combines a circuit breaker, protection relay, and automatic control. It works for 15.5 kV and 27 kV distribution lines. When a fault reaches the configured protection criteria, the device opens the circuit and then attempts to reclose according to the programmed sequence.
If the event was temporary and the fault has cleared, the supply can come back automatically. If the fault is permanent, the recloser completes the configured protection sequence and keeps the faulted circuit isolated.
| 15.5 / 27 kV RATED VOLTAGE | 100 / 200 A RATED CURRENT | 6.3 kA RATED SHORT-CIRCUIT INTERRUPTING CURRENT | >10,000 MECHANICAL OPERATIONS |
Benefits:
| • Fewer sustained outages after temporary single-phase faults • Less dependence on immediate field attendance and manual fuse replacement • The system focuses on protecting responses for the single-phase circuit where we install the device • More field resources are available for permanent faults and events that need on-site help |
Focus the Protection Response on the Affected Line
A single-phase recloser applies protection and reclosing to the single-phase circuit on which it is installed. This targeted approach can limit the impact of a local fault and reduce dependence on upstream devices that may interrupt a wider section of the network.
Utilities with rural and remote feeders can respond better to faults. They should restore what can be done automatically, isolate what needs to stay disconnected, and dispatch technicians only where help is truly needed.
What Projects Is This Approach Suitable For?
This approach works well for 15.5 kV and 27 kV single-phase overhead lines. It is useful in rural areas, scattered service zones, and places where getting to the site takes time or is expensive.
Questions to Confirm During Project Planning
| PROJECT DISCUSSION CHECKLIST • Required voltage and current rating • Protection criteria and programmed reclosing sequence • Feeder arrangement and protection coordination boundaries • Remote monitoring and communication requirements |
| Looking to reduce outage duration and field restoration work on overhead feeders? Talk to HEXING about line voltage, protection settings, feeder conditions, and the operating requirements for your network. |
