NVR5V-20E High Voltage Dc Relay

HV DC relay is an electrical switching device used in HV DC circuits. Its function is to transmit current in the power system and control the switching state of the circuit. It is widely used in DC transmission systems, power electronic equipment and industrial automation fields. HV DC relays play an important role in ensuring the safe and stable operation of the power system and realizing the control and management of power equipment.

HVDC relays have many advantages, such as high reliability, stability and fast response. In HV DC power systems, relays can quickly and reliably control and protect circuits. In addition, high-voltage relays also have high switching life and low contact wear rate, ensuring long-term stable operation. Relays can also realize distributed control and interlocking protection, and are used with automation equipment and monitoring systems. In addition, with the continuous advancement of science and technology, new HV DC relays also have the characteristics of miniaturization, intelligence, and digitization, and can meet the requirements of modern power systems for high efficiency and intelligence.

outline dimension (mm)		29.2×30×30.6
Contact form		1H
auxiliary contacts		/
Contact polarity		heteropolarity
contact resistance		≤5mΩ(at 1A )
operation voltage		≤75% U n
Load maximum current		20A
Load voltage		10～800V
maximum breaking current		30A
electrical endurance		Connected to: 710.54Secondary (800V, 20A) Toggle: the 3103Secondary (450V, 20A)
medium withstand voltage	Disconnect between contacts	3000VAC 1min
	Between contact coil	2500VAC 1min
mechanical endurance		2×105time
Coil rated voltage		12V, 24V, 48V
Coil power consumption		3W
Load elicitation method		QC exit
Coil extraction mode		QC exit
weight		About 50g
vibrate		10H z～500H z 49m /s2
humidity		5% to 85% RH
temperature range		-45℃～85℃
Installation hole size (mm)

HV DC relays are widely used in power systems, rail transit, power electronic equipment, industrial automation and other fields. In the DC transmission system, HV DC relays are used to control equipment such as converter valves, DC circuit breakers, and isolation switches to implement the operation and fault handling of the DC grid. In the field of rail transportation, HV DC relays are widely used in transportation systems such as subways and trams for signal control, traction power supply, and motor control. In terms of power electronic equipment, HV DC relays are used to control inverters, capacitor banks, charging and discharging devices and other equipment to ensure the normal operation of power equipment. In the field of industrial automation, HV DC relays are used to control high-voltage power supplies, electric boilers, petrochemical equipment, etc., to achieve automated control and equipment protection.

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