E.O. Schweitzer Manufacturing - A Division Of SEL
1CRV single-phase current reset standard remote display

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E.O. Schweitzer Manufacturing
A Division of SEL

    Fault Indicators
    Voltage Indicators
    Other Products for the Industry

Tel.: 1-847-362-8304
Fax: 1-847-362-8396
Email: csr@eosmfg.com

pdf Download LINAM CR Flyer

1CRV
Single-Phase Current Reset Standard Remote Display Type

Overview The SEL 1CRV uses continuous line load current to automatically reset and to maintain the energy required to respond to a fault (no batteries or minimum voltage required). When a fault occurs, the 1CRV fault indicators' reflective red target appears. It automatically resets when minimum line load is restored. 1CRV fault indicators are easy to install on an energized system using hotsticks and are field testable using tool No. CRSRTT.

An integral split-core transformer powers the 1CRV. The standard 1CRV fault indicator requires a minimum continuous load current to reset and remain ready to respond to a fault. The remote visual display assembly includes a panel mounting kit with a drilling template, polycarbonate display window, and associated stainless steel mounting hardware.

Applications

1CRV fault indicators are typically installed on underground systems near sectionalizing points. 1CRV fault indicators are ideal in single-phase applications where test point type connectors are not available to install a voltage reset indicator. In livefront switchgear applications, install the 1CRV on the outgoing feed, with its phase sensor installed below the stress relief terminator located in the pad or in the pedestal.

The indicator’s remote display load extends up to near the top of the cabinet for mounting at the optimum location. The 1CRV is also well suited to subsurface network switchgear and the switching structure of wall- mounted switchgear.

To help keep wires tidy and in place, try SEL magnetic cable guides. They securely position the cable against the inside of the cabinet wall, but are easy to reposition when pulling elbows or working inside the enclosure.

SEL offers a SCADA-compatible auxiliary contact feature on the 1CRV. This normally open latching-type contact closes when a fault occurs and will not open until normal system load current is restored for 30 continuous seconds.

Specifications
Power Source Load Current
Nominal Trip Ratings 400 & 800 A
Trip Tolerance +/- 10%
Voltage Range (P-G) 5 kV min. to 38 kV max.
Minimum Reset Current 3 A
Reset Automatic at minimum current
Maximum System Voltage Underground cable rating
Typical Reset Time 25 seconds at 3 A
Maximum Fault Current 25 kA for 10 cycles 60 Hz
Temperature Range -40° to +85°C
Trip Response Time 1 ms
Inrush Restraint Response Time 300 ms (add “IR” option)
Clamping Range 75” to 2.1” outer diameter
Housing Material UV-stabilized polycarbonate resin
Standard Display (1.2 cmI target area) Reflective red target
Transformer Core Silicon steel with vinyl coating
Submersibility 15 feet
Weight 1250 grams (typical)

 

LINAM®, BEACON®, & DAYLIGHT RESTRAINT® are registered trademarks of E.O. Schweitzer Manufacturing Division of SEL
Copyright © 2007 E.O. Schweitzer Manufacturing Division of SEL; All Rights Reserved