Ry-d1/1 voltage relay

name ： Voltage relay

model ：RWY-D1/3、RWY-D2

Voltage setting range ：0.5_99.9V/1199V/40~450V

Power consumption ≤4W

Return time ≤27mS

Return coefficient overvoltage 0.85_{0.95/ Undervoltage 1.02}1.12

Series models

RY-D1 Type voltage relay ;

RY-D2 Type voltage relay ;

One 、 summary

RY-D Series voltage relay （ Hereinafter referred to as this relay ） For generator 、 In the electrical protection devices of transformers and transmission lines , As the starting element of overvoltage protection or low-voltage lockout . This relay is an integrated circuit static relay , High precision 、 Low power consumption 、 Short action time 、 The return coefficient is high 、 The setting is intuitive and convenient 、 Wide range , And as a low-voltage relay, there is no jitter , Without DC auxiliary power supply, it can completely replace the electromagnetic voltage relay .

Two 、 Product features

RY-D Series voltage relays are self-developed according to the needs of market development D( Rail mounted ) Type shell , This kind of shell is small 、 Beautiful appearance 、 Light , Weight only 300-350g、 It can be assembled infinitely , Comply with European Standards . It can be directly installed in the switchgear 35mm On the guide rail , Greatly improve the installation density , Easy wiring .

3、 ... and 、 Principle that

1. The schematic block diagram of relay is shown in Figure 1

2． This relay is a static relay , It is composed of imported integrated circuits ; Measured AC voltage U～ The voltage proportional to the measured voltage is obtained after the isolation transformer depressurizes Ui, Conduct rectification after setting , The rectified pulse voltage is filtered by a filter , Get and Ui Directly proportional to the DC voltage Uo, In level detection Uo And DC reference voltage Ue Compare , If DC voltage Uo Lower than the reference voltage , The level detector outputs a positive signal , Drive the outlet relay , Then the relay is in action . conversely , Whether it is over-voltage relay or low-voltage relay , If DC voltage Uo Higher than reference Ue, The level detector outputs a negative signal , This relay is in the inactive state .

Four 、 Relay model classification and its meaning

5、 ... and 、 Main technical parameters

1. AC rating ：100V/50HZ

2. Overload capacity ： The AC circuit is allowed to be connected for a long time 1.2 Times the rated value .

3. Voltage setting range :19V-130V、85V-265V、180V-440V, The range is 1V.

4. Power consumption ：

a、 The power consumption of AC circuit is less than 1.5VA( AC rating 100V when )

5. Setting error

a、 Within the setting range , The value of setting average error shall not be greater than 3%, Average error =（5 Average value of measurements - Setting value ） Setting value ×.

b、 Under basic conditions , Measured on the same setting value 5 The large and small values of the secondary action value should not be greater than 4%.

c、 stay -10℃～50℃ At a temperature of , The value of any set point error shall not be greater than 4%.

6． Action time

a、 Overvoltage relay ：1.2 The action time of multiple setting value shall not be greater than 40ms;2 The action time of multiple setting value shall not be greater than 35ms.

7. Return coefficient

a、 The return coefficient of overvoltage relay is 0.85～0.95;

b、 The return coefficient of low voltage relay is 1.02～1.12;

8. Return time ： No more than 27ms

6、 ... and 、 Internal wiring （ Front view ）

7、 ... and 、 Outline and opening size

Ordering instructions

​ The relay model and specification must be indicated when ordering 、 Rated voltage and other parameters 、 The wiring mode before or after the board and the number of output connections . There are many output contacts of voltage relay, which can output two groups of conversion signals , When ordering, the user indicates that one opening and one closing or two normally open, two normally closed or two conversion is required , The user does not explain that one opening and one closing are generally provided . Other contact arrangement can be customized according to user requirements

A relay that operates when the voltage in the circuit reaches a predetermined value . Its structure is basically the same as that of current relay , It's just that the number of turns of the electromagnet coil is a lot , And it should be connected in parallel with the power supply . It is widely used in loss of pressure （ The voltage is zero ） And undervoltage （ Low voltage ） Under protection . The so-called voltage loss and undervoltage protection is when the power supply voltage is reduced too much or temporarily cut off for some reason , The motor is automatically disconnected from the power supply ; When the power supply voltage recovers , If you don't press the start button again , Then the motor cannot start by itself . If it is not controlled by relay , Instead, the knife switch is directly used for manual control , Because the switch was not opened in time during the power failure , When the power supply voltage recovers , The motor starts automatically , May cause accidents . In addition, there is overvoltage relay , It is when the circuit voltage exceeds a certain value , A relay that cuts off the power supply due to electromagnet suction , It is used for overvoltage protection （ Such as protective silicon tube and silicon controlled components ）.

Shanghai Joseph relay business department