KYN28-12 Metal Armored 20KV High-voltage Switchgear

KYN series metal-clad removable enclosed switch cabinet (called switch cabinet for short). It is applicable for power receiving and distribution in the 3.6-12Kv three-phase AC 50Hz single bus bar and single bus bar sectioning system. It has the functions of controlling, protecting and monitoring the circuit.

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Description

KYN28-12 metal armored 20KV high-voltage switchgear

Performance characteristics of KYN28-12 metal armored high-voltage switchgear:

1. Reliable "five prevention" locking function;

1、 Prevent accidental opening and closing of circuit breakers;

2、 Preventing on-load opening and closing of circuit breakers;

3、 Prevent live hanging (closing) of grounding wires (grounding switches);

4、 To prevent power transmission with a grounding wire, that is, to prevent the grounding wire (grounding switch) from closing the circuit breaker (isolation switch);

5、 Prevent accidental entry into live compartments;

2. High precision and protection level

3. Small size and small footprint

4. High mechanical strength, light weight, beautiful appearance, and long service life

Usage conditions

Surrounding air temperature: -15oC -+40oC.

The elevation of the installation site shall not exceed 2000 meters. Special circumstances will be discussed separately.

The daily average relative humidity of the atmosphere does not exceed 95%, and the monthly average does not exceed 90%.

D is in a medium without explosion risk, and there are no gases and dust (including conductive dust) in the medium that are sufficient to corrode metals and damage insulation.

There is no significant vibration or impact at the installation site.

Working power supply AC 220V, 50Hz

Main technical parameters
Rated voltage	.....................................	kV	3.6、7.2、12
Rated frequency	.....................................	Hz	50
Rated current of circuit breaker	.....................................	A	630/4000
Rated current of switchgear	.....................................	A	630/4000
Rated short-time withstand current (4S)	.....................................	kA	20、25、31.5、40
Rated peak withstand current (peak)	.....................................	kA	50、63、80、100
Rated short-circuit breaking current	.....................................	kA	20、25、31.5、40
Rated insulation level 1min power frequency withstand voltage	Pole-to-pole, pole-to- ground	kV	24、32、42
	Between open contacts	kV	24、32、48
Lightning impulse withstand voltage (peak)	Pole-to-pole, pole-to- ground	kV	40、60、75
Lightning impulse withstand voltage (peak)	Between open contacts	kV	46、70、85
The shell is IP4X, and it is IP2X when the compartment door and circuit breaker chamber door are opened

Features

1: STRICT protection step to ensure personal safety

2: The cable room can be installed as many as 9 single-core cables

3: Operation and testing positions will be established for the handcart, and both positions are equipped with safe and reliable positioning device and display device

4: The enclosure is completely assembled from aluminized and galvanized steel plate, which are machined and bent by machine tool and then bolted.

5: It has high mechanical strength and its neatness and beauty is ensured.

6: The switchboard door is sprayed with plastic, also has strong capacity of impact resistance and corrosion protection.

7: The primary switch may be provided with VD4 vacuum circuit breaker and C3 series of fixed type load switch from ABB, various domestic vacuum circuit breakers (such as VS1, VH1, VK, ZN28) may also be provided in lieu of the same foreign products.

8: Front door is installed with a observation window to check the operating state of the components inside the room

KYN28-12 6