28A-12 (S1) Armored Removable AC Metal Enclosed Switchgear

electrical power panel

electrisity control box

Air-insulated switchgear
Scope of application:
Applicable to three-phase AC rated voltage 12kV, rated frequency 50Hz power system.

factory general control box

Product Details
I. Overview
28A-12(Z)(S1-12) armored removable AC metal-enclosed switchgear is suitable for three-phase AC rated voltage 12kV, rated frequency 50Hz power system. It is mainly used in power plants, substations, power distribution centers of industrial and mining enterprises and large high-voltage motor starting equipment, etc., for receiving and distributing electric energy, and controlling, protecting and monitoring circuits; it can be used for single bus, single bus segmented system or double bus system.
This product complies with the requirements of GB3906 “3~35kV AC Metal-enclosed Switchgear”, GB/T11022 “Common Technical Requirements for High-voltage Switchgear and Control Equipment Standards”, IEC60298 “AC Metal-enclosed Switchgear and Control Equipment with Rated Voltages Above 1KV and 52KV and Below”, and DL/T404 “Technical Conditions for Ordering Indoor AC High-voltage Switchgear”.

2. Normal use conditions,
3. Ambient temperature: maximum temperature +40℃, minimum temperature -15℃;
4. Ambient humidity: daily average not more than 95%, monthly average not more than 90%;
5. Altitude: below 1000 meters;
6. Earthquake resistance: earthquake intensity not exceeding 8 degrees;
7. Daily average water vapor pressure not exceeding 2.2Kpa, monthly average not exceeding 1.8kpa;
8. The surrounding air should not contain obvious pollution such as corrosive or flammable gases and water vapor;
9. No serious dirt and frequent severe vibration;
10. When used under normal environmental conditions exceeding those specified in GB3906, the user and the manufacturer shall negotiate.

Note: ① When the relative humidity is greater than 70%, the electric heater should be connected.

② Where the altitude exceeds 1000m, it shall be handled in accordance with the provisions of JB/Z102-71.

3. Model and meaning

distribution electrical panel

IV. Structural features

1. The cabinet structure is made of aluminum-zinc plate assembled through multiple bending; high precision, corrosion resistance, light weight, high strength, and strong versatility of spare parts.
2. It can be equipped with VS1 (ZN63) series or imported VD4 series vacuum circuit breakers, with wide applicability and high reliability.
3. The trolley is equipped with working and test positions, and each position has positioning and display devices, which is safe and reliable.
4. It can be equipped with voltage transformer trolleys, metering trolleys, isolation trolleys, station transformer floor trolleys and other trolleys with the same purpose, which are interchangeable;
5. It is simple to replace the circuit breaker and has good interchangeability;
6. Safe, reliable and effective “five-protection” locking to prevent misoperation;
7. The cabinet is equipped with an observation window to observe the working status of the components in the cabinet;
8. The protection level is high to prevent the invasion of debris and pests; the protection level of the switch cabinet shell reaches IP4X, and the protection level of each compartment is IP2X;
9. The cabinet can be installed against the wall, maintained in front of the cabinet, and the floor space is reduced;
10. Each high-voltage room has a pressure relief channel to ensure personal safety;
11. The cable room has ample space and can connect multiple cables;
12. Heaters can be installed in the circuit breaker room and cable room respectively to prevent condensation and corrosion.
13. Lighting devices can be installed in the circuit breaker room and cable room according to user requirements to facilitate maintenance and repair.

V. Technical parameters

rlrunter	name		unit	data
1	Rated vcltage(maximum operating woltage)		KV	3.6 7.212
2	Rated frequency		Hz	50
3	Gircuit breaker rated curren		A	63012501600200025003150
4	Switchgear rated current		A	63012501600200025003150
5	Ratedthermal stability current(4s)		KA	16202531.54050
6	Rated dynamic stabllity current (peak walue		KA	40506380100125
7	Red ahort-dcutbrmikngeuert		KA	16202531.54050
8	Rated short-circuit making current (peak walue)		KA	40506380100125
9	Rd rauonsalerp ed	hnpowrfrsqueney wthatantheste	KV	24	32	42
		ujtginpkhstandwotag	KV	40	60	75
10	Protection leve		The houslngls P4X,and the compartment and ciroult breskar room doors are openIP2X

automation electrical panel

VI. Ordering Instructions

1. Main circuit scheme or main circuit system diagram;
2. Control circuit electrical schematic diagram, terminal arrangement diagram;
3. Switchgear layout plan;
4. Cabinet color (if no requirements, according to company standards);
5. List of components in the cabinet (including component name, specification model and quantity);
6. List of required spare parts;
7. If you have special requirements, please attach detailed instructions.