Circuit breaker GL312 145kV 3150A 40kA

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SF6 Circuit-breaker type GL312 145kV, 3150A, 40 kA, 50 Hz
Description

 SF6 Circuit-breaker type GL312 145kV, 3150A, 40 kA, 50 Hz, 

allowing three pole operations

without SF6 gas for first filling

without supporting steel structure

Without Anchor Bolts & Clamps

as per attached data sheet

Specifications

Breaker type GL 312 F1/4031 P/
GL 312 F3/4031 P
Rated voltage 145 kV
Rated frequency 50/60 Hz
Rated normal current up to 3,150 A
Rated short-circuit breaking current up to 40 kA
Rated short-circuit making current 104 kA
Rated duration of short-circuit 3 s
Opening time 28 ms
Break time 50ms
Closing time ≤70 ms
Average ambient temperature* -30 °C up to +40 °C
Design altitude* 1,000 m.a.s.l.
* Standard values according to IEC; temperatures down to -55 °C up to +70 °C and/or higher design altitudes available on request

The Right Choice for Temperatures Down to -60 °C Live tank circuit breakers for outdoor installation are designed for temperatures down to -60 °C and feature the latest technologies in interrupter chambers and spring-operated mechanisms. For example, the latest double motion technology effectively reduces the opening energy by approximately 65 %.


Components Interrupter chamber with integral double motion technology and self-blast system Pressure relief system for passive protection of substation and personnel Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial Easy access to the SF6 filling connection (type DILO) SF6 non-return (check) valve on each pole column Protected opening springs inside each pole column Hot-dip galvanized steel parts Mechanism housing made completely of aluminum Reliable spring-operated mechanism with position indicator clearly visible from outside Installation and Maintenance Preset at factory before shipping - no adjustments necessary during installation and commissioning Pole units pre-filled with SF6 at factory before shipping Independent disassembly of the interrupter chamber without having to remove the entire pole column Single-pole operated circuit breakers partially pre-assembled before delivery (base frame with mounted and wired mechanisms) Testing GE's live tank circuit breakers meet national and international requirement standards. This has been confirmed by comprehensive type tests according to the latest IEC, GOST and ANSI standards.

 

High Performance Live tank circuit breakers ensure a high level of reliability every day. Even under extreme conditions and climates or in highly active seismic areas customers can count on live tank circuit breakers made by GE. Key Benefits High reliability even in the coldest regions of the world: Down to -40 °C with pure SF6 Down to -60 °C with gas mixture Quick and easy installation and commissioning Long maintenance intervals g3 capability - green gas for grid with very low global warming potential


Quality The entire development and production procedures are fully compliant with the latest ISO 9001, ISO 14001 and OHSAS 18001 quality standards. This ensures the high quality of our products and services and is confirmed by regular audits. g3 - green gas for grid GE has pioneered an environmentally friendly alternative for SF6 gas which reduces the impact on global warming by more than 99% compared to SF6.