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German Railway Track Equipment (Zhejiang) Co., Ltd.

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JJC type AC relay
  • Product Details

Product Usage

The JC type AC relay is used as a buck-boost control relay, a signal switch track power supply supervisory relay, and a main screen and a backup screen conversion relay in the power supply screen. Can replace JZXC-20000 rectifier relay.


Features

1. The relay is an AC 220V heavy spring force electromagnetic relay with reinforced contacts.

2. The relay magnetic system is a clap-on AC magnetic system, which is composed of an iron core, a coil and an armature.

3. It adopts silver-silver oxide contact, which has the characteristics of strong anti-adhesion and low contact resistance.

4. The contact system is composed of ordinary contacts. There are four groups of moving on and off conversion ordinary contacts and two groups of moving and closing ordinary contacts. The structure of the ordinary contacts is the same as that of a non-polar relay.


Applicable environment

a) Ambient temperature: -40℃~+60℃;

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

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.


Dimensions

Relay: 165mm×49mm×163mm (length×width×height)

Socket: 157mm×48mm×22mm (length×width×height)


Mechanical properties

Number of contact groups: 4QH; 2Q

Identification pin number: 23, 55;

Contact gap: not less than 1.3mm;

Pallet gap: not less than 0.35mm;

Contact pressure: the dynamic contact point is not less than 250mN; the dynamic disconnection point is not less than 150mN;

Contact uniformity error: not more than 0.20mm.


Electrical characteristics

Rated value: AC220V

Release value: not less than AC54V

Working value: not more than AC180V

Coil resistance: 400 (1±10%) Ω

The coil is single-connected, use 1 and 2.


Time characteristics

The pull-in time is not more than 0.05S, and the return time is not more than 0.05S.


Installation method

The relay uses a power supply screen relay socket of type II. The relay is equipped with a locking device on the upper end of the socket, and the socket is installed on the relay frame. After the relay is inserted into the socket, the relay can be locked with a card board and locked with a hanging spring.

The relay identification pin numbers are 23 and 55.


Faults and troubleshooting methods

1. The 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.

2. 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 screen; use a multimeter to check the voltage drop of the current relay coil input terminal on the socket should meet the voltage drop requirements of the system circuit for reliable operation of the relay; otherwise, system error;

(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 polarity.

3. The relay does not release

The relay non-release 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 meet the requirements of the system circuit for reliable release of the relay.

Method: Use a multimeter to check that the voltage relay coil input terminal voltage on the socket should be less than the release voltage of the relay; use a multimeter to check that the voltage drop of the current relay coil input terminal on the socket should meet the requirements for reliable release of the relay in the system circuit; otherwise, it 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) Check that the relay should not be mechanically blocked. If a foreign object in the relay blocks the armature, the relay cannot be reliably released.


Insulation withstand voltage

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

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.


maintenance

Daily maintenance and maintenance items are as follows:

a) Keep the relay and socket clean;

b) Observe whether the relay operation status is normal;

c) The relay should be replaced in time for abnormal operating conditions and serious contact burnout.


Regular maintenance:

In the electrical life and life management cycle of the relay, the maintenance cycle of the stepless relay and the rectifier relay should be five years;

The overhaul period of stepless enhanced contact relays, poled relays and biased pole relays should be three years;

The overhaul period of stepped reinforced contact relays should be one year.

Appearance inspection and performance inspection should be carried out after the overhaul.


Product electrical life

The relay contact is connected to AC24V1.5A

Resistive load; its electrical life is 1×106 times.



    

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German Railway Track Equipment (Zhejiang) Co., Ltd.

Tel:+8613868770229

Email: jiangku@cnjkdq.cn

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