Dj-zbs2 leakage relay

Series models ：

DJ-ZBS1 Two shift leakage （ The remaining ） Relay

DJ-ZBS2 Two shift leakage （ The remaining ） Relay

DJ-ZBS3 Two shift leakage （ The remaining ） Relay

DJ-ZBS The leakage relay was originally a split fixed installation , In order to meet the needs of current installation occasions , Shanghai Joseph relay factory in the original product DJ Product upgrade based on leakage relay , The development appears in the more popular separate guide rail installation DJ Leakage relay , It is widely used in coal mines and other places , It is also a coal mine leakage relay ; Small volume 、 Easy to install and use 、 Reliable movement 、 Continuous power supply is stable and easy to operate . Can adapt to users everywhere , It can be used to protect the line from ground fault , It is mainly used to prevent equipment accident or electrical fire caused by grounding fault current , It can also be used to provide indirect contact protection for the release of human electric shock .

One 、 Product overview

Integrated leakage relay （ Hereinafter referred to as relay ） Suitable for AC voltage to 660V Or higher TN、TT、 and IT System , The frequency is 50Hz. Detect the zero sequence current exceeding the setting value through the zero sequence current transformer （ The remaining ） Leakage current . The relay is connected with the circuit breaker of shunt release or voltage loss release 、 AC contactor 、 Magnetic starter and other components of leakage protection device , For leakage and electric shock protection , Can be equipped with buzzer 、 Signal and other acoustooptic devices are combined to form a leakage alarm device . Derive multiple models , Prefix such as HLJ、RLJ、ULJ Series and other models , It is actually a similar product . It plays a very important role in the power system , It is the basis to ensure the reliability of power supply .

Two 、 Product use

The leakage protection relay has small volume 、 Easy to install and use 、 Reliable movement 、 Continuous power supply is stable and easy to operate . Can adapt to users everywhere , It can be used to protect the line from ground fault , It is mainly used to prevent equipment accident or electrical fire caused by grounding fault current , It can also be used to provide indirect contact protection for the release of human electric shock .

The leakage relay can be connected with the circuit breaker with shunt release or voltage loss release 、 AC contactor 、 Magnetic starter and other components of leakage protection device , For leakage and electric shock protection , It can also be equipped with buzzer 、 Signal lamp and other acousto-optic devices are combined to form a leakage alarm device . With reset 、 instructions 、 Call the police 、 Reset and other functions .

It is not suitable for the central grounding point of power supply or direct grounding system 、 Low voltage distribution system . It is a new product of network reform for safe use . The action time of the relay is divided into fast type and delay type , When used together, the trunk line and branch line shall be protected by classification , It can completely replace the past LLJ-□F（S）、LLJ-□H（S）、JD1 And JD3 Series leakage relay .

3、 ... and 、 Product parameters

● Rating

Voltage rating ： Rated voltage AC380V、AC660V、AC690V、AC1140V.

Working voltage value ：DC24V、AC110V、AC127V、AC220V、AC380V. It can also be customized according to customer requirements .

Allowable variation range of power supply voltage ： The voltage variation is the rated voltage 0.7 to 1.3 Times or wide power circuit .

Rated current value ：16A、25A、32A、40A、63A、80A、100A、125A、200A、250A、320A、400A、630A、800A、1000A、1500A、1600A、2000A. Non standard point current can also be customized .

● Action value

Leakage action current ： General or user-defined , Can also be 50-500mA Split gear or adjustable .

Leakage non action current ： Half of the leakage action current .

Leakage action time ： Delay type 0.2-2S.

Fast type ≤0.1S .

● Important parameter

The aperture of the transformer is round （L type ）：M25、M45、M75、M100、M150、M160、M220.

Rectangular square （ Runway type ）：45160、45220、45260、45320、45*450 etc. .

Output contact form ： Open and close .

● Other parameters

Contact capacity ： The output contact of the relay can be disconnected no more than 250V, The time constant is 5±0.75mS The DC inductive load circuit of is 50W; The voltage is not greater than 250V The AC circuit of is 50VA. The relay can be switched on for a long time 5A.

Power consumption ： Not more than... Under rated voltage 5W.

ambient temperature ：-10℃~+50℃.

Medium strength The conductive terminals of the relay are connected together between the exposed non live metal parts or shells , Able to bear 2000V（ Valid values ） AC voltage , after 1 Minutes test without insulation breakdown or flashover .

Insulation resistance ： The conductive terminals of the relay are connected together between the exposed non-metallic part and the shell , Use open circuit voltage 500V The insulation resistance measured by the megger of is not greater than 300MΩ.

Electrical life ： The relay contact is connected to the circuit load of the specified capacity , The electric life is 100000 Time .

Four 、 working principle

The relay is an electronic current operated leakage relay , It is mainly composed of zero sequence current transformer 、 Electronic circuits 、 The working principle of the test circuit and outlet relay is as follows ： The wiring is shown in the figure （1）, Zero sequence transformer passing through the main line , When there is no leakage in the main line , The sum of vectors is equal to zero or minimal , When there is leakage or electric shock on the main line , The zero sequence transformer senses an unbalanced current vector and signal , When the circuit of zero sequence current transformer leaks to the ground iA+iB+iC≠0. Send it to the host for amplification , Check whether the leakage current exceeds the setting value , And send the results to the actuator for execution . At this time, the zero sequence current transformer will generate an induction signal , This signal is processed by electronic circuit , When the leakage current reaches the action value , Make the thyristor contact and make the relay act , Use relay normally open 、 The closing point controls the disconnection of the main circuit breaker or contactor , Cut off the fault line to achieve the purpose of protection . The test circuit is composed of resistors, buttons and other components , Press the test button , There is a current flowing through the transformer , Equivalent to the leakage current of the main line , The indicator light is on , The outlet relay should be able to act . Press the reset button , The light goes out , Outlet relay returns .

DJ-ZBS2 Leakage relay

1. Prevent electric shock accidents caused by leakage of electrical equipment and electrical lines ;

2. Prevent single-phase electric shock accidents during power use ;

3. Timely cut off the single-phase grounding electric shock fault in the operation of electrical equipment , Prevent fire accidents caused by electric leakage .

Shanghai Joseph relay business department