概述General 

The drop-type (throwable, detachable) arrester is a modified zinc oxide arrester and cleverly installed on the drop-type mechanism of the drop-type fuse. In the case of uninterrupted power, it can be conveniently installed with the help of the insulated switching lever. The detection, repair and replacement of lightning arresters not only ensures the smooth flow of lines, but also greatly reduces the work intensity and time of power maintenance personnel. It is especially suitable for places where power outages are not suitable, such as communications, airports, stations, hospitals, bustling commercial areas, etc. . Other performance of the product are the same as distribution type arrester.

The drop-type arrester adds a disconnector. After the arrester is struck by lightning and has an electric current, it is difficult to detect it with the naked eye if the appearance of the arrester is not damaged. This makes repairing the fault point very time-consuming. On the other hand, if the arrester is struck by lightning and has an electric current, it is difficult to detect it with the naked eye. After the fault, since it is still connected to the power grid, replacement of a new arrester either requires live work or a power outage, which causes trouble in the repair and replacement work and delays the recovery time of the power grid.

Therefore, our company has designed and produced drop-type arresters (YH5WS-17/50DL and YH5WS-17/50DL-TB). The power frequency short-circuit current is used to make the disconnector operate, so that the ground terminal of the disconnector automatically disconnects, and the arrester element falls down and exits. operation to prevent further accidents and make it easy for maintenance personnel to find problems in time for maintenance and replacement. It fundamentally solves the problem that the fault point of the arrester is not easy to find, and it can be easily replaced without interruption of power, ensuring the stability of daily power supply, reducing a large amount of power maintenance workload, saving a lot of manpower, and greatly Improve work efficiency. The principle of falling is similar to that of a fuse, where the fuse is blown and causes the fuse tube to fall. Our company adopts the current advanced thermal explosion disconnector, which has the advantages of fast action speed, wide operating current range, and can withstand specified current impact and operating load.

1. The installation and use of lightning arresters has gone through the following three installation and use processes, and their advantages and disadvantages are compared as follows:

产品型号说明Model Descripition

工作原理

Drop-type gapless metal oxide lightning arrester with detachment device (YH5WS-17/50DL-TB) combines the advanced concept of metal oxide arrester with detachment device and the principle of drop-out fuse. In addition to having the experience of metal oxide arrester In addition to the voltage protection function, when an abnormal fault occurs, the power frequency short-circuit current will cause the disconnector to operate, its grounding terminal will automatically disconnect, and the arrester will fall down and exit the power grid operation. It can be easily replaced for maintenance and repair, which improves the power supply quality of the power grid.

Arrester installation method—(first generation arrester installation method):

Advantages: easy to install

Disadvantages: It is difficult to detect arrester faults. Maintenance and replacement requires power outage. The line maintenance workload is heavy and the work efficiency is low. Arrester installation method 2 (second generation arrester installation method): Advantages: Easy to install, easy to find fault points

Disadvantages: Although the fault point is easy to find, since the arrester exits the power grid at the low-voltage end, maintenance and replacement requires power outage, and line maintenance is still inconvenient. Arrester installation method three (third generation arrester installation method):

Advantages: It is easy to install and the fault point is easy to find. Since the arrester exits the power grid at the high-voltage end, maintenance and replacement can be done while it is live, saving a lot of manpower and greatly improving work efficiency. Currently, YH5WS17-50DL is a more practical installation method.

产品电气参数表 Electrical Parameter Table of Product

Note: The parameters of the arrester are the same as those of conventional arresters. The above ones are distribution types, which can be replaced by capacitor type and other types.

安装使用说明Operating Instruction Of Installtion

1.安装使用前请检查避雷器元件与跌落式机构之间的松紧程度，以保证接触良好并投卸灵活。

2.跌落式机构上接线端接高压线，下接线端必须可靠接地，切勿接反。

3.避雷器在投入运行前和投入运行后的注意事项同普通避雷器。

4.当避雷器需要检修或更换时，可在不断电的情况下，借助绝缘拉闸操纵杆对准避雷器单元上的拉钩进行方便的操作，如同更换跌落式熔管。

1.Prior to installation and usage,please check the degree of tightness between lighting arrester components and falling type mecha-nism to guarantee the good touch and flexible throw and dismounting.

2.The upper terminal post of falling mechanism is connected with high voltage wire,the lower terminal post must be reliable groundingnever be reverse connection.

3.The notices prior to putting into use and after putting into use are same as those of the power distribution lighting arrester.

4.In overhaul and change of lightning arrester,in cause of no power failure,aim at the hook on lightning arrester unit by means ofinsulation switch-off control rod to make convenient operation,which is same as failing fuse tube.

概述General

三相组合式复合外套氧化锌避雷器是一种新型的用于保护电力设备绝缘免受过电压危害的保护电器，它在限制相地间过电压的同时，又对相间过电压进行有效地限制。广泛用于保护真空开关、旋转电机、并联补偿电容器、发电厂、变电站等。这种组合式避雷器已运行了十几年，实践证明是一种切实可行有效限制相间过电压的措施。避雷器内部采用大容量氧化锌电阻片作为主要元件，具有良好的伏安特性和吸收过电压的能力，对被保护设备提供可靠的保护，目前已广为电力系统选用。

Three-phase combined type combined overcoat zinc oxide lightning arrest,one kind of new type protecting electric equipmentfor protecting the insulation of electric equipment form over-voltage harm,it restricts the over-voltage among phases effectivelywhile restricting the over-voltage between phase and ground.It is widely used for protecting vacuum switch,rotating electricalmachines,parallel connector compensation capacitor,power plant and transformer substation and so on.The combined typelightning arrester has run for several decades of years.The practice proves that it is an operable measure for effectively restrictingover-voltage among phases.Inside the lightning arrester,with good voltage-current characteristic and absorbing over-voltagecapacity,large capacity zinc oxide resistance piece is used as main component which provide reliable protection for protectedequipments.it is widely selected and used for electric power system at present.

技术标准Technical Standard

本产品执行国标GB11032-2010《交流无间隙金属氧化物避雷器》,复合外套产品同时执行JB/T8952-2005《交流系统用复合外套无

间隙金属氧化物避雷器》、JB/T10496-2005《交流三相组合式无间隙金属氧化物避雷器》。

National standard GB 11032-2010 gapless metal oxide lightning arrester is implemented for product.JB/T 8952-2005 combinedovercoat galpess metal oxide lightning arraster for AD system.JB/T 14096-2005 AD three-phase combined type gapiless metaloxide lightning arrester.

产品特点Product Features

1.采用四只元件星型接法设计，从而使各相地、相间的过电压都得到保护；结构上的巧妙配合，使一台组合式避雷器起到六台普通避雷器的作用，同时克服了三只避雷器不能保护相间过电压的特点。

2.组合式结构，外形小重量轻，安装灵活，极大地利用和缩减了使用空间；特点适合在开关柜内安装。

3.硅橡胶外套整体模坟一次成型，具有良好的密封、耐污、防爆、防潮性能，介电强度高、抗漏痕、抗电蚀、耐热、耐寒、耐老化。

4.组合式避雷器可以是无间隙型，也可以是有串联间隙型。

1.Use four components star shape connection design,thus obtain the protection between phase andground and among phases;for the crafty allowance in structure one combined type lightning arresterplays an role of six common lightning arresters,overcome the disadvantage that three lightning arresterscan not protect over-voltage among phases at the same time.

2.Combined type structure,small in dimension and light in weight,flexible in installation,greatly utilize and reduce the applicationroom;especially suitable for the installation in the switch cabinet.

3.Silicon rubber overcoat uses one step pressing of die stamping,with good sealing,anti-pollution,explosion proof and damp proofperformance,high dielectric strength,leakAge trace proof,anti-electric erosion,heat poof,cold resistant and aging resistant andaging resistant performance.

4.Combined type lighting arrester can be either gapless type or series connection gap type.

使用条件Sevice Conditions

a.海拔高度不大于1500米

a.Height above sea level is not above 1500meters

b.环境温度：-40℃-+40℃

b.Ambient temperature:-40℃-+40℃

C.The max wind velocity is not beyond 35m/s

C.最大风速不超过35m/s

d.Earthquake intensity,the area of 7 degree or below

d.地震烈度7度及以下地区

e.Power voltage exerted on lightning arrester for long periods isnot beyond the continuous operating voltage of lighting arrester

e.长期施加在避雷器上的工频电压不超过避雷器的持续运行电压

f.电源频率：48HZ-62HZ

f.Power frequency:48HZ-62HZ

最适宜：紧凑型开关柜内、电厂厂用系统、电弧炉系统等

Most suitable for:inside compact type switch cabinet.Power utilization for power plant,electric are furnace system and so on

产品型号说明Model Descripition

用户须知User Notice 

1.运输、贮存、开箱和安装时，不得强烈碰撞；使用前检查外观是否完好。

2.投运前测量DC.U1mA,其值不得小于厂家规定值；测量75%U1mA下泄露电流Ix,Ix≤50μA;投运后定期(5年)测一次DC.u1mA,与初始值比较，变化率不得大于±5;

3.不需专门维护和清扫。

1.In transportation,storage,opening box and installation,never strongly bump;prior to usage check whether the appearance is inorder.

2.Prior to putting into use,measure DC.U1mA,its value shall not be less than regulated value;measure leakAge current lx under 75%u1Ma,Ix≤50μA,after putting into use,regularly (five years)measure DC.u1mA one time,compare with the initial value,the changerate shall not above ±5%

3.Do need the special maintenance and clean,

三相组合式氧化锌避雷器型号对照表Three phase composite zinc oxide arrester model list

目前三相组合式氧化锌避雷器正处于老型号与行业标准JB/T8459-2011《避雷器产品型号编制方法》型号的过渡期，为了便于广大用F对所购买的产品合理的选型，避免在适用中产生误解，我公司现将几种产品的型号及用途列于下表，供用户参照适用。

Current three phase composite zinc oxide arresters are under the transition period from old models to models regulated in the newtrade standard JB/T 8459-2011Product Model Formulation Method for Arresters .To facilitate our clients to make rational model seiectionon products purchase and wipe away the misunderstandings in applications,our company lists the models and functions of several products in thefollowing table for reference and application of our clients

三相组合式避雷器典型技术参数表 Technical Parameters Of Three Phase Modular Lighting Arrester

用途 Application	系统标 称电压 System        kV	标准 型号 Type		额定 电压 Rated voltage kV		无间隙型 Gapless arrester				有间隙型 Gapless			标称残压 Residual voltage kV				2000μs 方波通 流 容 量 2000μs Square wave through discharge A
						持续运 行电压 Continuous operation voltage kV	直流电压 DC Continuous operstion voltage kV	0.75倍直流 1mA电压下 泄漏(μs) DC Continuous operation voltage kV		工频放电电压 有效值不小于    Power frequency sparkover voltage   kV	1.2/50冲击放电 电压峰值不大于 1.2/50 Simpulse dischargevoltage (peak value) kV		8/20雷电冲击 电流下峰值 不大于 8/20 Lighting mpulse current		30/60操作 冲击电流下 峰值不大于    30/60   Switching current impulse
							相对相/相对地(仅一个数字表示相间和对地参数相同)
S型 配电用 For power distribution	3	YH5WS-5/15x5/15		5		4.0	8.0/7.5	50					15.0		12.8		100
	3	YH5CS-3.8/15x3.8/13.5		3.8						9.0	15.0/13.5		15.0/13.5		11.4/10.2		100
	6	YH5WS-10/30x10/30		10		8.0	16.0/15.0	50					30.0		23.0		100
	6	YH5CS-7.6/27x7.6/24.5		7.6						16.0	27.0/24.5		27.0/24.5		22.5/20.4		100
	10	YH5WS-17/50x17/50		17		13.6	26.5/25.0	50					50.0		38.3		100
	10	YH5CS-12.7x12.7/41		12.7						26.0	45.0/41.0		45.0/41.0		38.4/35.0		100
Z型 电站用 For Transforme substationh	3	YH5WZ-5/13.5x5/13.5		5		4.0	7.5/7.2	50					13.5		11.5		150
	3	YH5CZ-3.8/12x3.8/12		3.8						8.0	12.0		12.0		10.2		150
	6	YH5WZ-10/27x10/27		10		8.0	15.0/14.4	50					27.0		23.0		150
	6	YH5CZ-7.6/24x7.6/24		7.6						16.0	24.0		24.0		20.4		150
	10	YH5WZ-17/45x17/45		17		13.6	25.0/24.0	50					45.0		38.3		150
	10	YH5CZ-12.7/41x12.7/41		12.7						26.0	41.0		41.0		35.0		150
	35	YH5WZ-51/150x51/134		51		40.8	84/73	50					150/134		134/114		400
	35	YH5CZ-42/124x42/124		42						80	124		124		1,054		400
R型 电容用 For Capacita- nce	3	YH5WR-5/13.5x5/13.5		5		4.0	7.5/7.2	50					13.5		10.5		400
	3	YH5CR-3.8/12x3.8/12		3.8						80	12.0		12.0		9.6		400
	6	YH5WR-10/27x10/27		10		8.0	15.0/14,4	50					27.0		21.0		400
	6	YH5CR-7.6/24x7.6/24		7.6						16.0	24.0		24.0		19.5		400
	10	YH5WR-17/46x17/46		17		13.6	25.0/24.0	50					46.0		35.0		400
	10	YH5CR-12.7/41x12.7/41		12.7						26.0	41.0		41.0		33.0		400
	35	YH5WR-51/150x51/134		51		40.8	84/73	50					150/134		122/105		400
	35	YH5CR-42/124x42/124		42						80	124		124		100		400
D型 发电机用 For generato	3.15*	YH5WD-4/11.5x4/9.5		4		3.15	7.0/5.7	50					11.5/9.5		9.4/7.6		400
	3.15*	YH5CD-3.8/9.5x3.8/9.5		3.8						7.5	9.5		9.5		7.6		400
	6.3*	YH5WD-8/23x8/18.7		8		6.3	14.0/11.2	50					23.0/18.7		18.7/15.0		400
	6.3*	YH5CD-7.6/18.7x7.6/18.7		7.6						15.0	18.7		18.7		15.0		400
	10.5*	YH5WD-13.5/38x13.5/31		13.5		10.5	23.2/18.6	50					38.0/31.0		31.0/25.0		400
	10.5*	YH5CD-12.7/31 x12.7/31		12.7						25.0	31.0		31.0		25.0		400
D型 电动机用 For Motor	3.15*	YH2.5WD-4/11.5x4/9.5		4		3.15	7.0/5.7	50					11.5/9.5		9.4/7.6		200
	3.15*	YH2.5CD-3.8/9.5x3.8/9.5		3.8			“			7.5	9.5		9.5		7.6		200
	6.3*	YH2.5WD-8/23x8/18.7		8		6.3	14.0/11.2	50					23.0/18.7		18.7/15.0		200
	6.3°	YH2.5CD-7.6/18.7x7.6/18.7		7.6						15.0	18.7		18.7		15.0		200
	10.5*	YH2.5WD-13.5/38x13.5/31		13.5		10.5	23.2/18.6	50					38.0/31.0		31.0/25.0		200
	10.5*	YH2.5CD-12.7/31x12.7/31		12.7						25.0	31.0		31.0		25.0		200
电机中性 点保护	6.3	YH1.5WD-4.6-12		4.6		3.8	6.8	50		9	12		12		10		250
	6.3	YH1.5WD-4.8-12		4.6		3.8	6.8	50		9	12		12		10		250
	10.5	YH1.5WD-7.6/19		7.6		6.4	11.4			15	19		19		15.9		250
	10.5	YH1.5WD-8/19		8.0		6.4	11.4	-		15	19		19		15.9		250