Product Usage

The JWJXC2-6800 type enhanced contact relay is used in the distributed power supply screen.

Product function

It is a commonly used electrical appliance in automatic control systems. It is used to connect and disconnect circuits, to issue control commands and reflect the status of equipment to form automatic control and remote control circuits.

Applicable environment

The applicable environment of the relay is:

a) Ambient temperature: -40℃~+60℃;

b) Relative humidity: not more than 90% (temperature +25℃);

c) Air pressure: not less than 70kPa (equivalent to an altitude below 3000m);

d) Vibration: the vibration frequency is not more than 15Hz, and the amplitude is not more than 0.45mm;

e) Working position: horizontal;

f) There should be no harmful gas causing explosion hazard around, and good dust-proof measures should be taken.

test method

Standard test conditions

Temperature: +15℃~+45℃;

Relative humidity: 45%~75%

Air pressure: 86kPa~106kPa

Requirements for testing measuring tools, meters, and power supply

The accuracy of the measuring tool for measuring appearance and installation dimensions should not be less than 0.05mm; the accuracy of the feeler gauge should not be less than level 2; the measurement error of the force measurement should not be greater than 2%.

The accuracy of the DC voltmeter and ammeter used for testing should not be less than 0.5, and the accuracy of the AC (50Hz) voltmeter and ammeter should not be less than 1.

The power supply voltage should remain stable, and its fluctuation range should not exceed 5%. The DC power supply should be a DC generator, battery or AC full-wave rectifier power supply (except for special regulations, the ripple factor should not be greater than 5%). The waveform of the AC power supply should be a sine wave with a frequency of 50 Hz.

Mechanical properties

Number of contact groups: 2QHJ; 2QH

Identification pin number: 32, 53;

Strengthen the contact gap: not less than 7mm;

Ordinary contact gap: not less than 1.3mm;

Reinforce the gap of the support plate: generally not less than 0.35mm;

Reinforce the gap of the support plate: the reinforcement is not less than 0.1-0.3mm;

Strengthen contact pressure: dynamic closing is not less than 600mN; dynamic breaking is not less than 300mN;

Ordinary contact pressure: dynamic closing is not less than 250mN; dynamic breaking is not less than 150mN;

Contact uniformity error: not more than 0.20mm.

Electrical characteristics

Electrical characteristics (at +20℃)

Coil resistance: 3400 (1±10%) Ω×2

The coils are connected in series, connect 2, 3 to use 1, 4;

Rated value: DC220V;

Magnetizing value: DC220V;

Working value: not more than DC100V;

Release value: not less than DC30V;

Time characteristics (at rated voltage): the pull-in time is not less than 0.1S;

Time characteristics (at rated voltage): the release time is not less than 0.1;

Contact resistance: not more than 0.10Ω.

Faults and troubleshooting methods

Relay contact has no output

The analysis and elimination methods of the relay contact without output are as follows:

(1) Make sure that the relay and socket should be reliably plugged in;

(2) Check that the relay should not be mechanically blocked. If a foreign object in the relay blocks the armature, the armature cannot work reliably (forward rotation) or release (reverse rotation), and the contacts cannot be reliably contacted;

(3) Check that there should be no foreign matter between the contacts, there is foreign matter between the contacts, and the contacts cannot be reliably contacted;

(4) Check that the contact resistance of the relay contact should not be too large. The relay does not work or the relay with a pole cannot be reversed in the forward direction

The relay does not work or the relay with a pole cannot be reversed in the forward direction. The analysis and troubleshooting methods are as follows:

(1) Make sure that the relay and socket should be reliably plugged in;

(2) Check that the input voltage or current of the relay coil should be the rated value or the system circuit adjustment value.

Method: Use a multimeter to check the voltage relay coil input terminal voltage on the socket should meet the output voltage of the power supply relay; use a multimeter to check the current relay coil input terminal voltage drop on the broadcast base should meet the voltage drop requirements for the reliable operation of the relay in the system circuit; otherwise Is a system failure;

(3) If the above two items are normal, it can be determined that the relay is faulty and the relay should be replaced;

(4) The relay coil is short-circuited or disconnected, the relay cannot work reliably or has a pole relay;

(5) The diode of the rectifier relay is impacted or short-circuited, and the rectifier relay cannot work reliably;

(6) Check that the relay should not be mechanically blocked. If a foreign object in the relay blocks the armature, the relay cannot work reliably or reverse poles in the forward direction.

Insulation withstand voltage

Under the standard atmospheric conditions of the test, the insulation resistance of the relay should not be less than 100MQ.

Under the condition that the air pressure is not lower than 86kPa (equivalent to the altitude below 1000m), the insulation withstand voltage of the relay should be able to withstand AC sine wave 50Hz, 2000V rms voltage, there should be no breakdown flashover after 1min, the voltage when repeating the test Should be 75% of the original test voltage value.

Product electrical life

The relay contacts are connected to DC24V1A resistive load; its electrical life is 2×106 times.

After-sales service

From the date of delivery, the warranty period of infinite relays, rectifier relays (the warranty period of electronic components is one year), polarized relays and biased pole relays is 1 year, and the warranty period of infinitely enhanced contact relays and polarized enhanced contact relays Provide free maintenance services for the company during the one-year warranty period; for relays that exceed the warranty period, the company will provide lifetime technical support based on the actual situation and the cost of maintenance items, creating conditions for users to master the use and maintenance methods of the relay.

a) Bad quality or damage due to transportation, storage, improper use, etc., and unsealed relays are not covered by the company's warranty;

b) If the user violates the technical requirements of this manual or fails to perform normal maintenance according to the maintenance manual during installation and use, the company does not assume any responsibility for the damage;

c) During the company's warranty period, if the products and parts are unpacked without the authorization of Shanghai Shenxin Railway Signal Equipment Co., Ltd., the company will not be responsible for any damage caused by this;

d) Non-Shanghai Shenxin Railway Signal Equipment Co., Ltd. components that are assembled on the company's products without the company's consent cause product quality problems, and the company does not assume any responsibility for this;

e) The company does not assume any responsibility for damage caused by natural disasters, such as earthquakes, floods, lightning strikes, landslides and other irresistible causes;

f) Damage caused by destruction, theft or fire extinguishment, or damage caused by other reasons not caused by the company, the company does not assume any liability arising therefrom.