Indoor high voltage vacuum circuit breaker OEM/ODM with permanent magnetic actuator NKVSM/NKVS1/NKZN63
户内交流高压永磁机构真空断路器NKVSM/ NKVS1/ZN63-12kv
Indoor AC high-voltage vacuum circuit breaker with permanent magnetic actuator NKVSM/ NKVS1/ZN63-12kv
NKVMS (NKVS1) (- -12/1250-31.5) type circular mechanism
1 overview:
NKVMS (NKVS1 (NKZN63A)) round indoor AC high-voltage vacuum circuit breaker with permanent magnetic actuator for indoor switchgear in 12kV air insulated protection, as power equipment, industrial and mining enterprises of the power equipment and control unit for opening and closing, the different nature of the power load, suitable for city network, rural power grid, power grid construction of mines and railway etc. and the renovation project, especially for operation in the operating current range for frequent and short open) (ZN63A) fault operation times have certain requirements of the occasion. The product to absorb domestic and foreign advanced technology and process, has the characteristics of intelligence, high reliability, long service life, maintenance free, no pollution to the environment when in use, is the green environmental protection product.
NKVMS (NKVS1) circular indoor high voltage vacuum circuit breaker can be for frequent operation, with many times of breaking and fast reclosing function.
Circuit breakers not only can be used as a fixed unit, and can also be matched with a special propulsion mechanism, a hand car unit using.
NKVMS (NKVS1) of permanent magnetic actuator and vacuum interrupter round type vacuum circuit breaker used before and after arrangement, the main circuit for floor type structure, the upper, lower outlet seat and vacuum arcing chamber is mounted on a tubular insulating cylinder. The use of epoxy resin with APG process and casting into a tube insulation, this structure makes the vacuum arc extinguish chamber surface can not generate dust accumulation, avoid the subject to external factors damage, can ensure that the damp heat and serious pollution of the environment, the product still has a good insulating performance.
This product complies with the GB1984 high-voltage AC circuit breaker "," JB3855-85 "10kV indoor AC high voltage vacuum circuit breaker, comb" DL403-91 "l0-35kV indoor high voltage vacuum circuit breaker order technical conditions" and the relevant IEC standards, and has reliable interlock function.
2 technical parameters:
2.1. technical parameters are shown in Table 1
Table 1 technical parameters
The serial number of the parameter name unit specifications
1 of the rated voltage of kV 12
Rated current 2 A 6301000, 12501250, 1600, 2000, 2500, 3150
3 of the rated short-circuit breaking current of 31.540 kA 2025202531.5
4 rated peak withstand current kA 506350638080100
5 rated short-time withstand current of 31.540 kA 2025202531.5
6 of the rated short-circuit current kA 506350638080100
7 of the rated short circuit duration of S 4
8 short-circuit current breaking times 50 (40kA 30)
9 of the rated operation of the order of O-0.3s-CO-180s-CO, O-180s-CO-180s-CO (40kA)
10 rated single / back-to-back capacitor bank breaking current of A 630/400 (40kA 800/400)
11 rated capacitor bank close inrush current KA 12.5 (frequency less than 1000Hz)
12 mechanical life 20000
13 breaking times of rated current 20000
14 rated lightning impulse withstand voltage (Quan Bo) kV 75
15 rated withstand voltage of kV/min 42
16 arcing time of MS is less than or equal to 15
17 full off time of MS is less than or equal to 80
2.2. mechanical parameters are shown in Table 2
Table 2 mechanical parameters
The serial number of the parameter name unit parameters
2 contact travel mm 11 + 1
The 3 contact overtravel mm 4 + 1
4 closing speed m/s 0.6 + 0.2
5 the opening velocity of m/s 1 + 0.2
The 6 contact contact bouncing time Ms = 2 (40kA = 3)
8 phase contact folding and unfolding of MS is less than or equal to 2 over the same period
9 closing time of MS is less than or equal to 80
10 gate time of MS is less than or equal to 50
The 11 energy storage time (s < 10 first charge)
12 closing control voltage V ~ 110 and ~ 220
13 gate voltage control of V ~ 110 and ~ 220
The 14 main circuit resistance Mu omega = 60 (630A), is less than or equal to 45 (1250A),
Less than or equal to 35 (1600 ~ 2000A), is less than or equal to 25 (more than 2500)
The 15 phase spacing of MM 210 (20~31.5kA), 275 (40kA)
The 16 switch contact pressure of N (20kA) 2000 + 200, 2400 + 200 (25kA),
3100 + 200 (31.5kA), 4250 + 250 (40kA)
The 17 movable contact and the static contact wear allowed total thickness mm
The working principle of the 3 structure and the permanent magnetic mechanism:
3.1. vacuum circuit breaker pole structure
NKVMS (NKVS1) circular series of indoor vacuum circuit breaker with ceramic vacuum interrupter, middle sealing or a row sealing interrupter, are made of copper chromium contact materials, cup-shaped longitudinal magnetic field structure. Wear rate of the contact of the small electric contact pressure, long life, high levels of insulation, medium strength and stability. Arc recovered quickly after the closure, the low level, strong breaking capacity.
NKVMS (NKVS1) circular series of indoor vacuum circuit breaker operating mechanism adopts the overall structure and layout of the form before and after the arc quenching chamber, the main circuit of three-phase grounding structure. Mounted longitudinally in a insulation tube vacuum interrupter insulating tube is made of epoxy resin using APG casting process, thus special anti creepage. The structure design and reduce dust in the arc quenching chamber surface accumulation. To prevent the chamber under the influence of external factors of vacuum arc effective.
NKVMS (NKVS1) circular series of indoor vacuum circuit breaker based on user requirements can also be mounted sealed arc interrupter pole, it will be fixed in the vacuum interrupter insulating pole internal through a special process, reduces the assembly adjustment links, improve mechanical reliability, effectively prevent the insulation defect is easy to filth, gel effect on the protection of the vacuum interrupter is not subject to external impact.
The structure of 3.2. permanent magnetic actuator
NKVMS (NKVS1) circular series Touchi Shinzoranaga magnetic circuit breaker mechanism part adopts a modular design, including the permanent magnetic actuator and control part, an energy storing part. As shown in Figure 1 Structure of permanent magnetic operating mechanism. The use of bistable structure, the application of advanced permanent magnet design theory, high energy neodymium iron boron rare earth materials, combined with perfect production process.
The conventional spring and circuit breaker operating mechanism compared to parts of permanent magnetic actuator is reduced by 70%, with the reduced number of components, failure probability is reduced, further improve the reliability; in addition, permanent magnetic actuator is very suitable for the intelligent control and easy operation, intelligent circuit breaker.
Permanent magnetic actuator for moving parts is very little, cancelled the mechanical locking and tripping of the complex system, so it has irreplaceable advantages: less failure, reliable, long life (up to 100000 times more), no need of lubrication, very suitable for some of the requirements of high reliability, operation frequent occasions, such as electricity, coal mine and steel, railway etc..
NKVMS（NKVS1）（□-12/1250-31.5）型－圆形机构
1.概述：
NKVMS（NKVS1(NKZN63A)）圆型户内交流高压永磁机构真空断路器适用于12kV空气绝缘的户内开关设备，作为电网设备、工矿企业动力设备的保护和控制单元，用于开合各种不同性质的电力负荷，适用于城网、农网、矿山及铁道等电网建设和改造工程中，尤其是用于在工作电流范围内频繁操作和对短路开）(ZN63A)断操作次数有一定要求的场合。该产品吸纳国内外先进技术及工艺，具有智能化、高可靠、寿命长、免维护等特点，使用时对周围环境无污染，是绿色环保产品。
NKVMS（NKVS1）圆型户内高压真空断路器可进行频繁的操作，具有多次开断和快速重合闸的能力。
断路器既可做为固定安装单元，也可配用专用推进机构，组成手车单元使用。
NKVMS（NKVS1）圆型真空断路器的永磁操动机构和真空灭弧室采用前后布置，主导电回路为落地式结构，上、下出线座及真空灭弧室被安装在一个管状的绝缘筒内。绝缘筒用环氧树脂以APG工艺浇注而成，这种结构使得真空灭弧室表面不会发生粉尘聚集，避免其遭受外部因素的破坏，可以确保在湿热及严重污染环境下，产品仍具有良好的绝缘性能。
本产品符合GB1984《高压交流断路器》、JB3855-85《10kV户内交梳高压真空断路器》、DL403-91《l0-35kV户内高压真空断路器订货技术条件》和相关的IEC标准，并具有可靠的联锁功能。
2.技术参数:
2.1.技术参数见表1
表1 技术参数
|
序号
|
参数名称
|
单位
|
参数规格
|
|
1
|
额定电压
|
kV
|
12
|
|
2
|
额定电流
|
A
|
630
|
1000、1250
|
1250、1600、2000、2500、3150
|
|
3
|
额定短路开断电流
|
kA
|
20
|
25
|
20
|
25
|
31.5
|
31.5
|
40
|
|
4
|
额定峰值耐受电流
|
kA
|
50
|
63
|
50
|
63
|
80
|
80
|
100
|
|
5
|
额定短时耐受电流
|
kA
|
20
|
25
|
20
|
25
|
31.5
|
31.5
|
40
|
|
6
|
额定短路关合电流
|
kA
|
50
|
63
|
50
|
63
|
80
|
80
|
100
|
|
7
|
额定短路持续时间
|
S
|
4
|
|
8
|
短路电流开断次数
|
次
|
50（40kA为30次）
|
|
9
|
额定操作顺序
|
|
O-0.3s-CO-180s-CO，O-180s-CO-180s-CO（40kA）
|
|
10
|
额定单个/背对背电容器组开断电流
|
A
|
630/400（40kA为800/400）
|
|
11
|
额定电容器组关合涌流
|
KA
|
12.5（频率不大于1000Hz）
|
|
12
|
机械寿命
|
次
|
20000
|
|
13
|
额定电流开断次数
|
次
|
20000
|
|
14
|
额定雷电冲击耐受电压(全波)
|
kV
|
75
|
|
15
|
额定短时工频耐受电压
|
kV/min
|
42
|
|
16
|
燃弧时间
|
ms
|
≤15
|
|
17
|
全开断时间
|
ms
|
≤80
|
2.2.机械参数见表2
表2 机械参数
|
序号
|
参数名称
|
单位
|
参 数
|
|
2
|
触头行程
|
mm
|
11±1
|
|
3
|
触头超行程
|
mm
|
4±1
|
|
4
|
合闸速度
|
m/s
|
0.6±0.2
|
|
5
|
分闸速度
|
m/s
|
1.0±0.2
|
|
6
|
触头合闸弹跳时间
|
ms
|
≤2（40kA为≤3）
|
|
8
|
三相触头合、分闸同期性
|
ms
|
≤2
|
|
9
|
合闸时间
|
ms
|
≤80
|
|
10
|
分闸时间
|
ms
|
≤50
|
|
11
|
储能时间(首次充电)
|
s
|
＜10
|
|
12
|
合闸控制电压
|
V
|
∽110、∽220
|
|
13
|
分闸控制电压
|
V
|
∽110、∽220
|
|
14
|
主回路电阻
|
μΩ
|
≤60(630A)， ≤45(1250A)，
≤35(1600～2000A)， ≤25(2500以上)
|
|
15
|
相间距
|
mm
|
210（20~31.5kA），275(40kA)
|
|
16
|
合闸触头接触压力
|
N
|
2000±200(20kA)， 2400±200(25kA)，
3100±200(31.5kA)， 4250±250(40kA)
|
|
17
|
动、静触头允许磨损累计厚度
|
mm
|
3
|
3.结构及永磁机构工作原理：
3.1.真空断路器极柱结构
NKVMS（NKVS1）圆型系列户内真空断路器配用陶瓷真空灭弧室，为中间封接或一次封排灭弧室，均选用铜铬触头材料，杯状纵磁场触头结构。其触头的电磨损速率小，电寿命长，触头耐压水平高，介质绝缘强度稳定。弧后恢复迅速，截流水平低，开断能力强。
NKVMS（NKVS1）圆型系列户内真空断路器总体结构采用操动机构和灭弧室前后布置的形式，主导电回路为三相落地式结构。真空灭弧室纵向安装在一个管状的绝缘筒内，绝缘筒由环氧树脂采用APG工艺浇注成型，因而特别抗爬电。这种结构设计，同时减少粉尘在灭弧室表面聚积。有效的防止真空灭弧室受外部因素的影响。
NKVMS（NKVS1）圆型系列户内真空断路器根据用户要求也可以安装固封式灭弧室极柱，它将真空灭弧室通过特殊工艺固定在绝缘极柱内部，减少了装配调整环节，提高了机械可靠性，有效防止了对地绝缘易污秽、凝露影响的缺陷，保护了真空灭弧室不受外界撞击。
3.2.永磁操动机构的结构
NKVMS（NKVS1）圆型系列户内真空永磁断路器机构部分采用模块化设计，其中主要包括永磁操作机构、控制部分、储能部分。永磁操作机构的结构如图1所示。该采用双稳态结构，应用先进的永磁设计理论、高磁能的钕铁硼稀土材料，并结合完善的制造工艺。
与断路器的常规弹簧操动机构相比，永磁机构的零件数减少了70%，随着零件数量的减少，发生故障的几率降低，可靠性进一步提高；另外，永磁机构非常适于进行智能控制和操作，便于断路器的智能化。
永磁操动机构由于运动部件非常少，取消了复杂的机械锁扣及脱扣系统，因而具有无法替代的优势：故障少、可靠、寿命长（可达到10万次以上）、无需润滑，非常适用于一些要求可靠性高、操作频繁的场合，如供电、煤矿、炼钢、铁路等。
ELECTRIC
