English
DHV250 is an electromagnetic operated switch. The core principle is that when the coil is energized, electromagnetic force is generated to drive the internal armature and moving contact to close the normally open m ain contact,
thereby connecting the high-voltage DC main circuit. After the coil is powered off, the contact quickly disconnects under the action of the reaction spring (or permanent magnetic force), cutting off the circuit.
Core materials and certification: The product complies with the RoHS environmental directive and has passed China Compulsory Certification (CCC) and European CE certification, meeting the safety and quality standards for market access.
Strict performance testing: Product parameters are based on rigorous testing, such as:
Dielectric withstand voltage: The conductive parts that are mutually insulated can withstand a withstand voltage test of 2200VAC/1 minute.
Environmental tolerance: The working temperature range is from -40 ℃ to+85 ℃, and it can withstand 5g vibration and 20g impact, adapting to harsh working conditions.
Life testing: Provide electrical life curves based on resistive loads, with a mechanical life of up to 300000 cycles.
Reliable mechanical and sealing structure: adopting a sealing structure to prevent external pollution, and optimizing the inflation design for arc extinguishing. There are clear regulations on installation torque and wiring torque to ensure connection reliability.
Process and Process Control: The document specifies the tolerance level for unmarked dimensions, reflecting the control of manufacturing accuracy.
High current carrying capacity, small size: Achieve a rated current carrying capacity of 250A in a compact volume, saving installation space.
Extremely low power consumption: The coil maintains a maximum power consumption of only 2.5W, which is energy-saving and efficient, reducing heat loss.
High reliability design:
Wide voltage range: The main contact switching voltage is 12-1000VDC, covering multiple high-voltage platforms.
Strong breaking ability: can cut off a maximum current of 2000A (320VDC).
Contact voltage reduction: At a current of 250A, the contact voltage drop is ≤ 80mV, and the conduction loss is small.
Long term service life: 300000 mechanical cycles, combined with electrical life curve, with a long service life under rated conditions.
High safety: high insulation resistance (≥ 100M Ω), strong dielectric withstand voltage, built-in surge protection design (some models), safer to use.
Flexible configuration: Two wide range coil voltages, 9-36V and 32-95V, are available for selection; The main contacts are available in screw type (A/H type) and screw type (C/D type), and can be equipped with auxiliary contacts; Supports two installation methods: flat (A) and horizontal (H), suitable for different application scenarios.
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