漏电M54123三菱
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西门子3AQ型断路器“N2泄漏”故障的定位及处理邱生苏州供电公司,苏州215004The Orientation and Treatment to The “Loss of nitrogen” Failure of Siemens 3AQ Circuit-BreakerQIU ShengSuzhou Electric Power Company, Suzhou 215128, China摘要:西门子3AQ型断路器在电力系统中有大量采用。
由于采用液压操作机构,“氮气泄漏”是其最常见的故障信号。
为了尽量降低在事故处理中的停电次数以提高供电可靠性,正确的分析及处理故障尤为重要。
文章从物理定位和电气定位两个方面对故障进行分析,给出两个方面的故障处理方法,最后通过三个实际发生的故障实例的处理过程进行了方法验证。
关键词: 3AQ型断路器;故障;物理定位;电气定位Abstract: The 3AQ circuit-breaker is widely used in electric power system. The breaker has a hydraulic operating mechanism, so the signal of “Loss of nitrogen”is the most ordinary failure. In order to raise the power supply reliability, how to correctly analyze and deal with the failure to reduce the outage frequency is very important. This paper analyzes the failure from the electric orientation and physical orientation, gives the treatment methods in above two aspects, finally the treatment methods are verified by three practical fault diagnoses.Key words:the 3AQ circuit-breaker;failure;physical orientation;electric orientation0前言西门子3AQ型断路器是采用SF6气体作为绝缘和灭弧介质的压气式高压断路器,使用固定在断路器本体上的液压操作机构[1]。
产品简介概述产品简介概述系列介绍德力西电气生产的低压断路器产品在国内具有广泛的影响CDB9系列低压终端电气产品,代表了当今国内低压终端配电的最高水平CDB9系列低压终端电气产品,可以广泛应用于工业,民用住宅,商业建筑等领域,对所在电路进行短路保护,过载保护,漏电保护;同时还能起到隔离及控制作用产品外观介绍左视图绿色;表示触头断开 状态位置红色:表示触头闭合 安装孔,用于安装 电气附件正视图右视图热塑外壳强抗冲击性 可回收 有弹性 自熄性 脱扣曲线和额定电流 分断能力和限流等级触头位置状态手柄指示"I-ON"表示触头闭合状态位置 "O-OFF"表示触头断开状态位置 紧固螺钉安装孔,用于 安装漏电模块 安装孔,用于 安装漏电模块拔线指示拔线指示顶视图工作频率额定电压符合标准认证标志12In±20%产品简介产品简介额定电流 1,2,4,6,10,16,20,25,32,40,50,63A 额定工作电压 230/400V AC 极数 1/2/3/4P 最大工作电压 440 V AC 分断能力 6 kA / 10kA 冲击耐受电压 4 kV 限流等级 3隔离功能 切实分断指示快速闭合 保证冲击性负载的可靠工作,延长断路器的电气寿命机械寿命 20000次 电气寿命 10000次环境: 使用环境温度: -30°C 至 +70°C抗湿热性: 2类 (温度55°C 时,相对湿度95%)参考重量 (克)重量121242363484接线 隧道式接线端子可采用上进线下出线方式或下进线上出线方式且无需降容 端子接线面积2及以下导线安装 模块化结构,可方便地安装在DIN 标准导轨上 可垂直、水平或背部安装,特性不受影响 额定扭矩 附件 OF 辅助触头,SD 报警触头,MX+OF 分励脱扣器,过、欠压脱扣器符合标准 IEC/EN 60898-1,GB10963.1 符合认证 CCC 、KEMA 、CE 、CB 、RoSH脱扣特性B 型曲线保护短路电流较小的负载(如电源、长电缆等)脱扣特性: 瞬时脱扣范围 (3~5) In C 型曲线保护常规负载和配电线缆脱扣特性: 瞬时脱扣范围 (5~10) In D 型曲线保护起动电流大的冲击性负荷脱扣特性: 瞬时脱扣范围 (10~14) In短路保护过载保护 控制隔离CDB9断路器适用于工业、民用建筑、能源及基础设施等领域低压终端配电。
D E E P S E A E L E C T R O N I C S P L C541P r o t ec ti o n E x p a n s i o n/ A n n u nc i a t o rThe Model 541 Protection Expansion/Annunciator is designed to be used as either a protection expansion module, an annunciator, or a combination of both. The inputs are fully configurable by the user to suit the application. The module features a number of facilities enabling it to be used as a stand alone module or part of a complex control system. It is particularly suited to providing input expansion to the DSE 500 series control modules.The Safety On timer can be selected to be either internal from the Fuel On input being active, or externally fed from another device such as the 520 Automatic Start module.An A larm Reset input is provided to enable the alarms to be cleared. This can be configured to be fed from either plant negative or plant positive DC. This gives maximum flexibility to the module, and allows for interfacing with an output relay on a 520 to enable the 520 module control switch to be the master alarm clear control.The module also features plant DC supply monitoring alarms and can provide indication of a high or low supply voltage. This feature can be disabled if not required.Alterations to the system are made by using a PC and the 808 interface. This also provides the operator with real time diagnostic facilities to monitor the operation of the system.Relay outputs are provided for by way of six configurable outputs. Normally, four relays are configured as Warning, Shutdown, Electrical Trip and Common Alarm outputs. The remaining two relays are configured to signal starting and delayed alarms active. However the relay functions are configurable to activate on a range of functions, conditions or alarms. Outputs of relays 1&2 are at negative plant supply to give compatibility with the inputs to other 500 series modules. Relays 3 to 6 are volt free.The module can be fitted to the 157 relay expansion module to provide a further eight fully configurable volt free relay outputs.Configurable inputs are available for Fuel, Safety on, Reset and Lamp test. This allows the module to function with normally open or normally closed switches. Additionally ten fully configurable auxiliary inputs are provided to give protection expansion or annunciation. These can be selected to be indication, warning, shutdown or electrical trip inputs either immediate, on start-up or held off during safety on delay.Uncommitted LED’s allow annunciation with configurable colour selection – each LED provides choice of Red, Green or Amber. Standard indication or warnings are displayed as ’steady’ illuminations, and Shutdowns or Electrical Trips are displayed as ‘flashing’.The 500 series modules have been designed for front panel mounting . The module is fitted into the cut-out with the fixing clips removed. These are then fitted from the rear. Connection is via locking plug and socket connectors.D E S C R I P T I O N S P E C I F I C A T I O NDC Supply:8 to 35 V Continuous.Cranking Dropouts:Able to survive 0 V for 50 mS, providing supply was at least 10 V before dropout and supply recovers to 5V. This is achieved without the need for internal batteries.Max. Operating Current:340 mA at 12 V. 240 mA at 24 V.Max. Standby Current:15 mA at 12 V. 15 mA at 24 V.DC Alarm Voltage Range: Minimum Low Volts trip 0V Maximum High Volts trip 40V Time delay 0sec – 60minutesAuxiliary Relay Outputs: 5 Amp DC at supply voltage.Dimensions:72 x144 x 118.5mmWeight: 0.5KgOperating Temperature Range: -25 to +55°CIssue 3 VH 13/11/01C A S ED I ME N S I O N ST Y P I C A L C O N N E C T I O N SD e e p S e aE l e c t r o n i c s p l cHighfield House, Hunmanby Industrial Estate, North Yorkshire, YO14 0PH, England Tel:+44(0)1723890099Fax:+44(0)************************************144.0mm7.5mm=Reset Input configurable to be switched to +Ve Plant DC or。
EC97J1113MELSERVO-J3 不断发展的新一代伺服高速定位改善平滑时间SmallMR-J370MR-J2-Super16816840120404040MR-J31682307010MR-J2-Super6000(r/min)HC-KFSHF-KP 实现高速度、高精度紧凑灵活54321100020003000400050006000(r/min)(例)400W3000r/minHF-KP HC-KFS高速度,高转矩电机HF 系列●转矩(N ·m )最大运行范围持续运行范围功率提升!高速度(6000r/min)和高性能速度频率响应(900Hz)缩短定位时间。
●速度更快!时间速度更短的定位时间HF-MP/HF-KP 系列的最大速度已经提高到6000r/min ,HF-SP2000r/min 系列达到3000r/min 。
●高度精确运行改善机器性能高分辨率编码器262144p/rev(18-位)作为标准部件实现低速时的稳定性。
降低齿轮转矩以减小电机转矩波动。
●●绝对编码器是标准配置。
如果电池(MR-J3BAT)安装在伺服放大器上,在电源接通时不必再次进行原点回归。
●现有产品 的1/2现有的电机(HC 系列)新的电机(HF 系列)<点转转矩>(注1)<伺服放大器>安装面积比现有型号减少40%(与400W 相比较)。
●可紧凑安装*紧凑安装的工 作环境不同。
(注2)减少40%结构更紧凑!单位:mm●<伺服电机>比现有型号减少20%(例如:HF-MP/HF-KP 系列400W)与三菱HC-MFS/HC-KFS 系列比较减少20%体积更小!●<伺服电机>HF-SP 系列的连接器比已有的HC-SFS 系列更小,可以使用户的系统更加紧凑。
●■接线灵活·伺服放大器端子排采用连接器,因此减少了接线时间。
关于连接器详见此样本中的“外部设备”部分。
要:本文就漏电芯片在断路器(~400V)中的应用及零序互感器的抗干扰、屏蔽等作了分析。
关键词:漏电保护安全运行随着塑料外壳式断路器的应用不断推广,漏电保护将变得越来越重要。
民宅中能有效地保护人生安全,以及克服由于电缆老化和破损引起的火灾,漏电保护在断路器上的应用,由于塑料外壳式断路器的体积、强电流特征,合理选择抗干扰、屏蔽等变得十分重要。
一、电路原理图R1:压敏电阻TUS:瞬间电压抑制器Rl0:试验电阻R9:限流调整电阻T:脱扣线圈L:零序互感器1.工作原理采用M54123专用漏电集成电路后,外围电路较为简单。
当有漏电路后,RL上有感应电压V7,当V7大于VRE时,(VRE为基准电压,即动作电流所对应的设定值)差分放大器有输出电流,经C1积分后,打开闭锁电路触发可控硅导通,带动脱扣器切断电源,完成保护过程。
2.元件说明及要求Cl为积分电容,其大小直接影响动作时间及触发灵敏度。
C2、C3为抗干扰电容。
由于M54123输出电流很小(100一300uA),所以要求可控硅SCRI的触发灵敏度高。
考虑相电压为380V时,可控硅承受电压较高,在电路中设计了双可控硅导通工作,从输出大电流回路中根本性提高了可控硅工作的可靠性。
Rl有微调VTR的大小,根据不同要求而定。
C4为电路工作电源滤波电容已推荐值为3.3uF。
SCR1、SCR2选2NM或CR03AM、CR02AM、CROAM。
二、电路特点1.瞬间电压抑制器因漏电流不是想象的毫安级,而是负载对地直接短路,其值可达额定值的30倍时,此时,零序电流互感器虽处深饱和状态,但同样有一个很高电压输出。
对一般电子型保护器而言,均有被击伤的可能。
为此,我们在互感器的次级并接对电压有抑制作用的TVS管,当输出达到某一值时(可根据需要选定)TVS管被击穿,将VT钳入在某一设定的安全电位,保证后级的正常工作。
2.电网(对地电压)50V时保证工作当对地电压为50V时,出现危险情况,仍然能工作是一个重要的指标。