1. Working environment

• Site altitude: ≤4000m (When the altitude exceeds 1000m, please consult us for specific technical requirements).
• Ambient temperature: -25℃ to 40℃, daily average ≤35℃
• Ambient humidity: Daily average ≤95%, monthly average ≤90%
• Seismic intensity: ≤ 8
• The amplitude of electromagnet interference induced in the secondary system shall not exceed 1.6kV.
• The air around the switchgear is not polluted by dust, smoke, corrosive and flammable gases, vapors or salt spray.

2. Standards & Specifications

The switchgear is designed and manufactured in accordance with the following standards:
· IEC 62271-1: 2021 High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
· IEC 62271-100: 2021 High-voltage switchgear and controlgear - Part 100: Alternating-current circuitbreakers
· IEC 62271-102: 2022 EXV Extended version High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches

· IEC 62271-103: 2021 High-voltage switchgear and controlgear - Part 103: Alternating current switches for rated voltages above 1 kV up to and including
· IEC 62271-200: 2021 High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV

· IEC 61869-2：2012 Instrument transformers - Part 2: Additional requirements for current transformers
· IEC 61869-3：2011 Instrument transformers - Part 3: Additional requirements for inductive voltage 
· IEC 60529: 1989+AMD1:1999+AMD2: 2013 CSV Consolidated version Degrees of protection provided by enclosures (IP Code)

3. For more details please contact us for catalog and operation manual.