Dowei Electric Automatic Circuit Breaker (Recloser) ACR

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Dowei Electric Automatic Circuit Breaker (Recloser) ACR

Product catalog summary

General Description:

The document outlines the specifications and standards for an Automatic Circuit Breaker (Recloser) manufactured by Ningbo Dowei Electric Co., Ltd.
Compliance with international standards such as IEC 62271, ANSI/IEEE Std C37.60, and NEMA is highlighted.
Certifications include ISO 9001, KEMA, CESI, CE, TUV, UL, and ASTA.
Design considerations include seismic design per ETGI-1.020 and IEEE Std 693, and structural design per ASTM A325, ANSI/AISC 360, and AWS D1.1.
The equipment is suitable for high altitudes up to 5000 meters, with HCEP encapsulated vacuum interrupters and a painted 304 stainless steel tank for enhanced weather resistance.
Features include 3 current transformers, 6 voltage sensors, and communication protocols such as RS-232/485, DNP3.0, Modbus, and IEC 61850.

Typical Specification:

The recloser is an Automatic Vacuum Circuit Breaker with rated voltages of 15, 27, and 38 kV.
It operates at frequencies of 50/60 Hz and supports rated normal currents of 630/800 A.
The rated short-circuit breaking current ranges from 12.5 to 20 kA.
Power frequency withstand voltages are specified for both dry (50, 60, 70 kV) and wet (45, 50, 60 kV) conditions.
Lightning impulse withstand voltage (BIL) is rated at 125, 150, and 170 kV.
The operating sequence is O-0.5s-CO-2s-CO-2s-CO, with a permanent magnetic actuator as the operating mechanism.
The mechanical life is rated at 10,000 operations, with vacuum interrupters for arc interruption and solid epoxy resin for insulation.
The rated operation voltage is AC/DC 110/220 V.

Catalog excerpts

Dowei Electric Automatic Circuit Breaker (Recloser) ACR-1

Power Transmission & Distribution One stop equipments solution Automatic Circuit Breaker (Recloser)

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Dowei Electric Automatic Circuit Breaker (Recloser) ACR-2

General Description: • IEC 62271, ANSI/IEEE Std C37.60, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 62271 & IEEE C37, ~ 5000m • HCEP encapsulated vacuum interrupters with excellent performance • Painted 304 stainless steel tank for improved weatherability • 3 Current transformers, 6 Voltage sensors Automatic Vacuum Circuit Breaker (Recloser) Item Unit Data Rated voltage Rated frequency Rated normal current Rated short-circuit breaking current Power...

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