KXGN-12 user boundary switch cabinet

KXGN-12 user demarcation switchgear complete sets of equipment are widely used in cable network tapping, segmenting, and multi-power point connection with rated voltage of 12kV and rated frequency of 50Hz. And connection, as well as the control and connection of the mixed network of underground cables and overhead lines, to achieve ring network power supply and radiation power supply. The product has a unique function of automatically removing ground faults and interphase short-circuit faults of branch lines (called demarcation switchgear function or watchdog function). It is a high-tech complete set of products combining vacuum switchgear technology and microelectronic intelligent control technology.

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user boundary switch cabinet

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KXGN-12 user boundary switch cabinet

Overview
KXGN-12 user demarcation switchgear complete sets of equipment are widely used in cable network tapping, segmenting, and multi-power point connection with rated voltage of 12kV and rated frequency of 50Hz. And connection, as well as the control and connection of the mixed network of underground cables and overhead lines, to achieve ring network power supply and radiation power supply. The product has a unique function of automatically removing ground faults and interphase short-circuit faults of branch lines (called demarcation switchgear function or watchdog function). It is a high-tech complete set of products combining vacuum switchgear technology and microelectronic intelligent control technology.

Citation Standards

GB/T11022	Common technical requirements for high-voltage switchgear and controlgear standards
GB 3906	3.6kV～40.5kV AC metal-enclosed switchgear and control equipment
GB 1984	High Voltage AC Circuit Breaker
GB 311.1	Insulation coordination of high voltage power transmission and transformation equipment
GB/T3309	Mechanical test of high voltage switchgear at room temperature
GB 4208	Enclosure rating (IP code)
GB/T191	Packaging, storage and transportation, graphic mark
DL/T404	3.6kV～40.5kV AC metal-enclosed switchgear and control equipment

Product Model Definition

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Technical parameters

Serial number	Item Item			Units	Data
1	Rated Voltage			kV	12
2	Rated Frequency			Hz	50
3	Power frequency withstand voltage		relatively, alternately	kV/min	42
			Fractures	kV/min	48
4	Lightning impulse withstand voltage (peak)		relatively, alternately	kV	75
			Fractures	kV	85
5	Rated Current			A	630
6	Rated short-time withstand current			kA	20 (4s)
7	Rated peak withstand current			kA	50
8	Rated short-circuit breaking current			kA	20
9	Rated short-circuit making current			kA	50
10	Rated short circuit breaking current times			times	30
11	Mechanical life times			times	10000
12	Annual Leak Rate			/	≯1%
13	Ambient air temperature	Maximum temperature		℃	+70
14		Minimum temperature			-40
15		Maximum daily temperature difference		K	≤25
16	Elevation			m	≤2000
17	Humidity	Daily average relative humidity		%	≤95
18		Monthly Average Relative Humidity			≤90
19	Earthquake tolerance	Horizontal acceleration		g	0.3
20		Ground vertical acceleration			0.15
21		Safety factor		/	6.7

Product Model Definition

111

Typical applications

1. Single switch multi-circuit outdoor cable branch box

111

One In Four Out Plan

Purpose
It is generally used for branching of outdoor cables and monitoring of specific branch lines of cables. It can protect the single-phase grounding and phase-to-phase short-circuit faults of the controlled branch line from affecting the main line and adjacent lines;
It can be configured as an integrated electric motor or fully manual configuration. The maximum cable tapping capacity is one in and four out.

Monitoring of specific branches of cables.
It can protect the single-phase grounding and phase-to-phase short-circuit faults of the controlled branch line from affecting the main line and adjacent lines;
Multi-circuit bus expansion.
When the fixed combination cabinet type cannot meet the quantity requirements of the primary line multi-circuit scheme, it can be used as an expansion cabinet type and realize the function of fault monitoring;
The existing line is upgraded and transformed, and the existing branch line without the watchdog function is serially connected to the switch cabinet to realize the monitoring of the branch line.

Cabinet Dimensions
1. Single switch multi-circuit outdoor cable branch box (one switch)

111

2. Internal dimensions of demarcation switchgear

111