Basler Electric BE1-79MA10A6JC0L0F – Multi‑Shot Automatic Reclosing Relay
The Basler Electric BE1-79MA10A6JC0L0F (also referenced as BE179MA10A6JC0L0F) is an advanced automatic reclosing relay designed for distribution feeders and transmission lines. It provides up to five reclosing attempts with independently programmable time delays, ensuring maximum service continuity while protecting the system from permanent faults.
Reclosing Sequence and Control
This relay accepts a trip initiation signal from overcurrent or other protection relays. It then initiates a programmed reclosing sequence, with each shot having its own time delay and a separate lockout count. The BE1-79M includes a reset timer that restores the relay to the initial state after a successful reclosure and a set period of normal operation. It also features a blocking input to inhibit reclosing under specific conditions, such as manual operator intervention.
Reclosing attempts: up to 5 (programmable)
Time delays: 0.1–300 seconds per shot
Lockout count: 1–5 attempts
Reset timer: 1–600 seconds
Inputs: trip initiation, external block, manual close
Outputs: close contact, lockout alarm, and status
Power supply: 120/240 V AC or 125/250 V DC
LED indicators: sequence status and lockout
Mounting: panel draw‑out case
Operating temperature: –20 °C to +65 °C
Typical Applications
This relay is commonly used on overhead distribution feeders where temporary faults are frequent. It is also applied in industrial power systems with critical loads that benefit from fast automatic restoration. The multi‑shot capability increases the chance of successful reclosure after transient events.
Installation and Configuration
Mounting is via a standard panel cutout. All settings—number of shots, delays, and lockout—are configured using DIP switches and dials on the front panel. A test mode allows simulation of the reclosing sequence without breaker operation.
Reliability and Standards
Built with solid‑state circuitry and surge‑protection components, the BE1-79M complies with IEEE C37.90 and IEC 60255 standards. It offers high immunity to transients and reliable operation in harsh environments.
In summary, the Basler Electric BE1‑79MA10A6JC0L0F reclosing relay provides flexible, dependable automatic restoration for distribution networks, reducing outage duration and improving reliability.
