Used for JOSEF anti jump intermediate relay JZB-115 DC220V DC1A in nuclear power plants

Description :

　　purpose

　　JZB series intermediate relays are used in power system relay protection and automatic control devices to increase the number and capacity of protection and control circuit contacts. This product adopts an integrated electrical principle mechanism to overcome the difficulty of adjusting the contacts of electromagnetic relays, and has the advantages of high reliability and strong anti vibration.

　　Classification Number:

　　1. One voltage winding and one current winding can both serve as working and holding windings

　　2. One voltage working winding, two current holding windings

　　3. One voltage working winding, two current holding and damping windings, when the damping winding is fixed and short circuited, the action time is 0.06 seconds or more.

　　4. One voltage working winding, two current holding and damping windings, with variable connection of damping windings. When the damping winding is not short circuited, the action time is less than 0.045 seconds. The short-circuit action time of the damping winding is 0.06 seconds or more.

　　5. One voltage working winding and four current holding windings.

　　6. One voltage working winding, four current holding and damping windings, variable connection of damping windings, with an action time of less than 0.045 when the damping winding is not short circuited. The action time of the damping winding when short circuited is 0.06 seconds or more.

　　7. One current working winding, one voltage holding winding, one damping winding, and the damping winding can be connected in a variable manner. When the short-circuit return time of the damping winding is more than 0.5 seconds.

　　8. One current working winding, one current holding winding, and one voltage holding winding, with an action time of less than 0.045 seconds.

　　9. One voltage working winding, three current holding windings CJ-1 shell (front wiring, rear wiring optional)

　　Technical Specifications

　　Action values: 48, 110, 220V, 0.25A, 0.5A, 1A, 2A, 3A, 4A, 8A

　　The operating voltage is generally 50% of the rated voltage value; The operating current is 50% of the rated current value.

　　Relays with current holding windings maintain a current of 50% of the rated current, while relays with voltage holding windings maintain a voltage of 50% of the rated voltage.

　　Return value: 50% of the rated value.

　　Power consumption: voltage winding<1.2W, current winding<2W, auxiliary power supply<3W.

　　Thermal stability: at ambient temperature+40 ℃

　　The voltage winding can withstand a temperature rise of no more than 65 ℃ at 110% of the rated voltage for a long time

　　The current winding can withstand three times the rated current for a long time.

　　Insulation resistance: The insulation resistance between relay circuits and magnetic conductors, as well as between circuits that are not electrically connected, should not be less than 300M Ω when measured with an open circuit voltage tester of 500V

　　Dielectric strength: The relay circuit can withstand AC 50H2 and voltage of 2000V for 1 minute between the magnetic conductor and other electrically unrelated circuits. The relay coil winding can withstand AC 50HZ and voltage 500V for 1 minute.

　　Lifespan: Electrical lifespan 210 "times, mechanical lifespan>10 times

• intermediate relay