Overview
YN28-12 armored removable AC metal-enclosed switchgear. It is suitable for three-phase AC power system with rated voltage of 12kV and rated frequency of 50Hz. It is used to receive and distribute electric energy and to control, protect and monitor circuits.
Standards compliant:
GB3906-2006 “3.6~40.5kV AC metal-enclosed switchgear and control equipment” GB11022-89 “General technical conditions for high-voltage switchgear” IEC298 (1990) “Rated voltage above 1kV and 50kV and below AC metal-enclosed switchgear and control equipment” DL404 -97 “Technical Conditions for Ordering Indoor AC High Voltage Switchgear”
Model Meaning
Functions and Features
The switchgear is designed according to the armored metal-enclosed switchgear in GB3906-91. The whole is composed of two parts: the cabinet body and the middle-mounted withdrawable part (ie the handcart). The cabinet is divided into four separate compartments, the enclosure protection level is IP4X, and the level between each compartment and the circuit breaker room door is IP2X when opened. It has overhead inlet and outlet lines, cable inlet and outlet lines and other functional schemes, which can be arranged and combined to form a complete set of power distribution system devices. The switchgear can be installed, debugged and maintained from the front, so it can be back-to-back, double-arranged and installed against the wall, which improves the safety, flexibility and footprint of the switchgear.
Normal use conditions
◆Ambient air temperature: maximum temperature +40℃. Minimum temperature -15℃.
◆Relative humidity: daily average relative humidity: ≤95%; daily average water vapor pressure does not exceed 2.2KPa; monthly average relative humidity: ≤90%; monthly average water vapor pressure does not exceed 1.8KPa;
◆Altitude: below 1000m.
◆Earthquake intensity: no more than 8 degrees.
◆The surrounding air should not be obviously polluted by corrosive or combustible gas, water vapor, etc.
◆No violent vibration place.
◆If it is used under the normal conditions specified in GB3906, it is up to the user and the company to negotiate.
