NVR5V-20D High Voltage Dc Relay
The principle of high-voltage DC relay is based on electrical control principle and electromagnetic principle. It realizes the opening and closing of the control circuit through electromagnetic excitation and mechanical connection. When working, the contacts of the high-voltage DC relay can...
The principle of high-voltage DC relay is based on electrical control principle and electromagnetic principle. It realizes the opening and closing of the control circuit through electromagnetic excitation and mechanical connection. When working, the contacts of the high-voltage DC relay can withstand the cutting and transmission of high-voltage DC current. The action of the relay can be achieved by components such as electromagnetic attraction, magnetic field manipulation, electromagnets and mechanical linkages. When the relay receives the control signal, the electromagnet excites and generates a magnetic field, which attracts or pushes the moving parts of the contacts, thereby cutting off or making the circuit. In high-voltage DC relays, the insulation and withstand voltage performance requirements are high. Because the system voltage is high and the working environment is complex, the relay needs to have strong environmental adaptability and tolerance.
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Product model |
NVR5V-20D |
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Maximum load voltage |
800V |
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Electric current |
20A |
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Whether the load is polar |
heteropolarity |
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Auxiliary contact |
- |
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Recommended usage scenario |
heteropolarity |
According to different application requirements, high voltage DC relays can be classified according to structure, electrical performance and protection functions. From a structural point of view, high-voltage DC relays can be mainly divided into two types: normally open type and normally closed type. In terms of electrical performance, relays have different parameters such as rated current and voltage to be suitable for different working environments. In terms of protection functions, high-voltage DC relays can also have overload protection, short-circuit protection, overvoltage protection and other functions. According to different application scenarios and needs, it is crucial to select the appropriate high-voltage DC relay type to ensure safe and reliable operation of the system.
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outline dimension (mm) |
29.2×30×30.3 |
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Contact form |
1H |
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auxiliary contacts |
/ | |
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Contact polarity |
heteropolarity |
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contact resistance |
≤5mΩ(at 1A ) |
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operation voltage |
≤75% U n |
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Load maximum current |
20A |
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Load voltage |
10～800V |
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maximum breaking current |
30A |
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electrical endurance |
Connected to: 710.54Secondary (800V, 20A) Toggle: the 3103Secondary (450V, 20A) |
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medium withstand voltage
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Disconnect between contacts |
3000VAC 1min |
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Between contact coil |
2500VAC 1min |
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mechanical endurance |
2×105time |
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Coil rated voltage |
12V, 24V, 48V |
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Coil power consumption |
3W |
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Load elicitation method |
QC exit |
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Coil extraction mode |
QC exit | |
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weight |
About 50g |
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vibrate |
10H z～500H z 49m /s2 |
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humidity |
5% to 85% RH |
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temperature range |
-45℃～85℃ |
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In general, high-voltage DC relays are indispensable and important components in power systems and industrial fields. They play an important role in ensuring the safe and stable operation of power systems and realizing the control and management of power equipment. With the continuous development of the power system and the continuous advancement of technology, the performance, reliability and application scope of high-voltage DC relays will continue to be improved and expanded, promoting the efficient, intelligent and sustainable development of the power system.
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