Digital AC Zero Sequence Voltage Relay
Zero sequence voltage relay (HJY-E1A / 4D)
Overvoltage relays are used to identify power equipment such as generators, transformers and transmission lines
The voltage is too low, it is used as power failure protection or as a blocking element.
It can completely solve the contact jitter and rejection during the operation of the electromagnetic relay.
The defect is not high, and the return coefficient is affected by the remanence. It can replace DY-31 \ 32C \ 35 \
Class 38 electromagnetic and static relays.
The specific features are as follows:
1. Convenient setting. The three-position dial switch is used for setting, which is intuitive and convenient. No calibration is required.
2. High accuracy, small step difference of 0.1V and 1V, small error.
3. High reliability, no jitter, no rejection, fast action, high return coefficient.
It can be installed on the guide rail or fixedly, which greatly facilitates the customer's space,
Cost and installation time.
2.1 Environmental reference conditions 3.2 Normal use conditions
Ambient temperature: 20 ° C soil 2 ° C ambient temperature: -25 ° C ~ + 50 ° C
Relative humidity: 45% ~ 75% Environmental relative humidity: not more than 90%
Atmospheric pressure: 80Kpa ~ 106Kpa Atmospheric pressure: 80Kpa ~ 1 10Kpa
Extreme temperature during storage and transportation: -25 ° C ~ + 75 ° C
Altitude of use place: no higher than 3000 meters
The surrounding medium of the use environment is free of explosives; it does not contain corrosive gases; it contains conductive dust
The concentration of Angstroms should not reduce the insulation level below the allowable value.
2.2 Rated parameters
Voltage setting range: 40-500V, 0.5-99.9V.
Rated frequency: 50HZ; 60HZ
Auxiliary power supply rated voltage: 220VDC; 110VDC; 48VDC; 380VAC; 220VAC, electricity
Allowable voltage fluctuation range: 0.8 ~ 1.15 times the rated voltage. AC and DC universal.
2.3 Large power consumption:
AC current loop: each phase is not greater than 0.5VA under 5A; each phase is not greater than 0.2VA under 1A.
2.4 Auxiliary power: not more than 6W at 220VDC; not more than 10VA at 220VAC
2.5 contact large capacity:
Load capacity: below 250V DC, τ = 5ms, inductive load 50W, resistive load 1 50W;
AC 250V or less, load 500VA;
2.6 Allow long-term current: 2A.
2.7 Insulation resistance: Use open circuit voltage 500V megohmmeter to measure the relay's conductive terminals together
The insulation resistance between exposed non-charged metal parts or the shell should not be less than 10MQ. .
2.8 Insulation withstand voltage: The locking screws of each lead-out terminal to the shell can withstand 2000V power frequency, the same
The group contacts can withstand 1000V power frequency voltage without breakdown for one minute.
2.9 Anti-interference performance: in accordance with China's GB6162-85 "Electrical of static relays and protection devices
Interference test "standard.
2.10 Electrical life: In the 250V DC circuit, the cut-off current τ = 5ms, at 50W, more than 100,000 times.
2.11 Mechanical life: The contact is 3 million times under no-load condition.