JOSEF voltage relay DY-23C, D-type rated voltage 200V, 50-200V

Description :

　　purpose

　　This series of intermediate relays is used in various protection and automatic control devices to increase the number and capacity of contacts in the protection and control circuits.

　　structural principle

　　1. This electric appliance is a valve type electromagnetic electric appliance. The coil is mounted on a "" - shaped magnetic conductor, with a movable armature on top. Two rows of contact springs are installed on both sides of the magnetic conductor to lift the armature upwards in a non active state, maintaining a certain gap between the armature and the magnetic conductor. When the electromagnetic torque between the air gaps exceeds the reactive torque, the armature is attracted to the guide magnet, and at the same time, the street iron presses the contact spring, causing the normally closed contact to open and the normally open contact to close, completing the relay operation. When the electromagnetic torque decreases to a certain value, due to the reaction torque of the contact spring, the contact and the armature return to their initial positions, preparing for the next work.

　　2. The "" shape of this relay adopts a double iron core structure for the magnet, which means that coils can be installed on both side columns. For DZY, DZL, and DZJ models, only one coil is installed, while for DZB, DZS, and DZK models, another iron core can be installed as needed to hold the coil or delay damping plates. Thus, relays with significantly different coil types can all use a common magnetic conductor.

　　3. According to the common use of intermediate relays and signal relays in electrical protection, this relay X-type product is equipped with a linkage action signal indication and reset mechanism, and has a pair of mechanical holding contact points to connect remote signals, which can completely eliminate the linkage signal relay. This is meaningful for improving the reliability of the holding device, simplifying wiring, and reducing costs.

　　Note: In addition to the main contacts mentioned above, the X-type also has a set of signal contacts with mechanical holding for the movable joint.

　　Technical data

　　Action value, hold value

　　The operating voltage and holding voltage shall not exceed 70% of the rated voltage, and the operating voltage of DZJ-200 shall not exceed 80% of the rated voltage. The holding voltage shall not be less than 30% of the rated voltage

　　DZK-200 and DZB-243 shall not be less than 50% of the rated voltage.

　　The operating current and holding current shall not exceed 80% of the rated current.

　　Return value: not less than 5% rated value, DZB-200 and DZS-200 not less than 3% rated value

　　Thermal stability (at an ambient temperature of 40C): The voltage winding can withstand 110% of the rated voltage for a long time with a temperature rise not exceeding 65C, and the current winding can withstand three times the rated current for 5 seconds.

　　Moisture and heat resistance performance

　　At a temperature of+40C, according to the alternating damp heat test procedure and method, after 2 weeks and 48 hours of testing, the insulation resistance value between the exposed non charged metal parts and the shell of the relay, as well as between the coil circuit and the contact circuit, shall not be less than 4M2, measured using a testing instrument with an open circuit voltage of 500V.

　　insulation strength

　　The relay circuit can withstand AC 50Hz, voltage 2KV, and last for 1 minute between non-conductive metal parts, casings, and circuits that are not connected to electrical appliances. The winding of the relay coil can withstand AC 50Hz voltage 1kV for 1min test

　　After the electrical lifespan, it can still meet the requirements of Sections 4.2-4.4. After adjusting the mechanical lifespan, it can still meet the requirements of Sections 4.2-4.4

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• voltage relay