XK-12 box type opening and closing station_High voltage switchgear

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High voltage switchgear Low voltage switchgear Prefabricated substation

High voltage switchgear

High voltage switchgear Low voltage switchgear Prefabricated substation

XK-12 box type opening and closing station

Category：High voltage switchgear
Release date：2019-02-26 16:02:11

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KYN28A-12 Installation Instructions
1 Overview
KYN28A-12 indoor metal armored central switchgear (hereinafter referred to as switchgear) is the latest generation of three-phase AC 50Hz, 3~12KV single busbar segmentation system developed by Tianshun Electric Co., Ltd. It is mainly used in power distribution systems of power plants, substations, industrial and mining enterprises, residential quarters, high-rise buildings, schools, etc., as a means of receiving and distributing electrical energy, and has functions of controlling, protecting and monitoring circuits. This type of relay chamber panel can be installed with various types of microcomputer-type integrated relay protection devices, which can realize intelligent control of the system. It has remote control, telemetry, remote signaling and remote adjustment functions. It is controlled by CAN bus with communication interface. Field network. It also has the function of preventing accidental operation of the circuit breaker, preventing the push and pull of the load, preventing the grounding switch from being charged, preventing the grounding switch from being powered at the grounding position, and preventing the accidental charging interval, that is, the "five-proof" function. The switchgear can be equipped with VS1, VD4, VB2 and other series of vacuum circuit breakers.

2. The external dimensions and weight of the equipment are shown in Table 1 and Figure 1.

Table 1

Height H (mm)		2300(2200)
Width W (mm)	Branch busbar rated current up to 1250A, thermal stable current 40kA	800
Width W (mm)	Branch busbar rated current 1600A and above	1000
Depth D (mm)	Cable entry and exit line	1500
Depth D (mm)	Overhead access line	1660
Weight (kg)		700～1200

Serial number	project		單位	data
1	Rated voltage		kV	12
2	Rated insulation level	1min power frequency withstand voltage	kV	42
2	Rated insulation level	Lightning impulse withstand voltage	kV	75
3	Rated frequency		Hz	50
4	Main busbar rated current		A	630，1250，1600，2000，2500，3150，4000
5	Branch busbar rated current		A	630，1250，1600，2000，2500，3150，4000
6	4s thermal stable current (effective value)		kA	16，20，25，31.5，40，50
7	Rated dynamic stability current (peak)*		kA	40，50，63，80，100，125
8	Protection level			The enclosure is IP4X; the compartment and circuit breaker door are IP2X when opened

Note: * The short circuit capacity of the current transformer should be considered separately.

? Technical parameters of vacuum circuit breaker

Serial number	name			unit	Parameter
1	Rated voltage			kV	12
2	Rated frequency			Hz	50
3	Rated current			A	630 1250	630 1250	1250 1600 2000 2500 3150	1250 1600 2000 2500 3150
4	Rated short-circuit breaking current			kA	20	25	31.5	40
5	Rated short-circuit withstand current				20	25	31.5	40
6	Rated short circuit duration			S	4
7	Rated peak withstand current			kA	50	63	80	100
8	Rated short circuit closing current				50	63	80	100
9	Rated insulation level	1min power frequency withstand voltage		kV	42
		Lightning impulse withstand voltage			75
10	Secondary circuit power frequency withstand voltage (1min)			V	2000
11	Rated operation sequence				O-0.3s-CO-180s-CO（小于40kA） O-180s-CO-180s-CO(40kA)
12	Mechanical life			次	M2級（10000)
13	Operating mechanism	Energy storage motor	Rated voltage	V	AC110/220DC110/220
			Energy storage time	s	≤15
		Closing trip coil	Rated voltage	V	AC110/220DC110/220
14	Contact opening distance			mm	11±1
15	Contact stroke				3.5±0.5
16	Three-phase tripping synchronization			ms	≤2
17	Contact closing bounce time				≤2
18	Contact closing contact pressure			N	2000±200 （20kA） 2400±200 （25kA） 3100±200 （31.5kA） 4750±250 （40kA）
19	Average opening speed			m/s	0.9～1.2
20	Average closing speed				0.5～0.8
21	Opening time (at rated operating voltage)			ms	20～55
22	Closing time (at rated operating voltage)				35～70
23	Conductive loop resistance			μΩ	≤65(630A) ≤55(1250A) ≤35(1600A～2000A) ≤25(2500A及以上)

Note: 1. The average opening speed refers to the average speed of the circuit breaker contact just after 6mm;
2. The average closing speed refers to the average speed of the full opening distance of the circuit breaker.

4. Structure
The equipment is designed according to the armored metal-enclosed switchgear in GB3906. The whole body is composed of two parts: the cabinet and the middle-mounted removable parts (ie, the handcart), as shown in Figure 2. The cabinet is divided into four separate compartments, the enclosure is IP4X, and the protection level is IP2X when the compartments and circuit breaker compartments are open. With overhead access lines, cable access lines and other functional solutions, the switch cabinets of each solution can be arranged to form a power distribution device capable of designing functions according to the application. The unit can be installed, commissioned and maintained from the front, so it can be stacked back-to-back or wall-mounted, increasing equipment safety, flexiblity and floor space

Figure 2 Grounding diagram of switchgear

Table 4

Cabinet width A (mm)	use	柜體深度L（mm）
800	Cable entry and exit line	1500
800	Overhead access line	1660
1000	Cable entry and exit line	1500
1000	Overhead access line	1660

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