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2016 New Arrival Over/Under Voltage Phase Failure Protection Relay

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Manhua Electric CO.,LTD.

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2016 New Arrival Over/Under Voltage Phase Failure Protection Relay

Application and Feature

1).CCX1 Overvoltage / Under voltage / Phase failure / Phase sequence Protection Relay (hereinafter Protection Relay), connected with the switching electrical device(like AC contactor etc.) as the protective circuit to do efficient protection for the breakdown which probably occurred over voltage,under voltage,phase failure,phase sequence in the inevasible 3 phase AC and transmission equipment( for example water pump,draught fan. Conveyer bait, air compressor, feeder line).

2). Protection Relay are widely used in the low voltage power distribution system of using 3 phase 50HZ in the industry,agriculture and service.

3). Protection Relay can disconnect the power supply of the main circuit to reaching the purpose of protecting the equipment and human safety under the conditions as below: when the phase sequence of Protection Relay is wrong connected with the pre-confirmed phase sequence due to change or maintain, occurred phase failure in the supply circuit. Occurred over voltage or under voltage in the supply power grid.

4). Protection Relay adopts the advanced technique of voltage test its main parts. Its feature are reliable operation, accurate failure indication, strong anti-interference, small volume, simple installation and use , furthermore it cannot be influenced by the big or small power of been protected equipment.

2. Work and installation conditions

1).Ambient temperature: ≤+40℃ and ≥-5℃

2).The heights of installation place is not over 2000m

3).Air condition:

a. Humidity: when the temperature is at +40℃, the air relative humidity is not exceed 50%. The higher relative humidity is acceptable the lower temperature, for example the humidity can reach up to 90% when 20℃, please adopt the special method for the condensation due to the temperature fluctuation.

b.Pollution Grade: Pollution grade 3 of Protection Relay (electric conduction pollution or to the condensation make the dry un-electric conduction to be polluted to become electric conduction).

4).Installation

a. Installation: 1)screw mounting 2)35mm standard DIN rail mounting.

b. For safe operation, Protection Relay should be installed uprightly relative to the ground.

3. Diagram Wiring

4. Main technical date

Power and voltage	AC 50Hz 3-phase 300v-460v
Over voltage protection	380v-460v can be adjusted; delay time 0.5s-5s can be adjusted.
Under voltage protection	300v-380v can be adjusted; delay time 1s-10s can be adjusted.
Phase failure and phase sequence active time≤0.2s.
Mechanical time	1000000 times
Electrical time	100000 times
Contact capacity	AC220V 5A(Resistance)
Power consumption	≤2W

5. Instruction

1). Phase sequence and phase failure protection

According to the wiring diagram (picture 2), the protection relay is connected into the circuit as protector. When normal operation, 3 indicator of The protection relay don’t light. If the 3-phase is in slightly, the indicator of ‘phase failure’light slightly, this condition is normal. If after connecting the protection relay into the circuit, electromotor cannot start up and the indicator of ‘phase failure’lighted, at that time you should change the position of every 2-phase of which A,B,C 3-phase input the protection relay, then repress the start button, the phase of normally start up the protection relay are confirmed, when the phase changed , the protection relay can immediately complete protection function. If the electromotor still cannot start up, should inspect if there is phase failure in 3-phase circuit.

2).Over voltage ,under voltage and time delay setting

The value of the panel of protection relay is the measure scale, if the user wants to accurately setting. Please adjust knob before using, and Subject to the actual measured values.

3).Please setting the knob of ‘over voltage value’slight lower than the maximum value of the operation voltage of equipment which has been protected by the protection relay. ‘over voltage time delay’is the active time of protection relay from the operation voltage over setting over voltage value.

4).The knob of ‘under voltage value’can be set slightly than the lowest value of the operation voltage of equipment which has been protected by the protection relay. ‘under voltage time delay’is the active time of protection relay from operation voltage lower than setting under voltage value.

5).The over voltage ,under voltage active characteristic diagram of the protection relay are as below (picture 3) , curve1; single-phase over voltage and under voltage , curve2:2-phase over voltage and under voltage , curve 3:3- phase over voltage and under voltage

Note For picture 2: when normal operation, Ta, Tc are in the state of connection.

6. Notice

Terminal L1,L2,L3 of protection relay connect with 3-phase live wire, terminal Ta,Tb,Tc are the output contact of protection relay, terminal Tb,Tc are normal closed, terminal Ta,Tc are normal open. When power on and after that, terminal Ta,Tc convert to normal open, terminal Ta,Tc convert to normal closed. When the protection relay does the protective operation ,terminal Ta,Tc convert to normal open again.

Packaging & Shipping

Packaging Details: Standard exportation packing

Delivery Details: Within 5-25 days after your order confirmed