Siemens APT Relays - What are the classifications of high and low voltage relays?

1. When choosing the solid state used in the printed circuit board with small current specifications, because the lead terminal is made of high thermal conductivity material, the welding should be carried out under the condition that the temperature is less than 250 °C and the time is less than 10S.

1. Electromagnet: The electromagnet of high and low voltage relay is usually composed of two parts: coil and core. When the high and low voltage relay inputs the electrical signal, the electromagnet coil will generate electromagnetic force, drive the iron core, and realize the on/off control of the relay. 2. Contact group: The contact group is a high and low voltage relay control ...

1. Structural characteristics of AC relays The coil of the AC relay is shorter, and the wire diameter is thicker, mainly because the coil is passed through the alternating current, the reactance is larger, and the thick wire diameter can reduce the internal resistance and reduce the heat generation.

The difference between the voltage transformer and the current transformer in terms of effect principle The primary difference is that the operating conditions are very different during normal operation, and the main performance is as follows: 1) The current transformer can be short-circuited twice, but it cannot be opened; The voltage transformer can be opened twice, but it must not be short-circuited 2) ...

The voltage transformer output is usually 100V 1. The working impedance in the secondary circuit of the voltage transformer should not be too small to avoid overload operation. 2 Before connecting the circuit, the polarity of the voltage transformer should be verified. 3 After connecting the circuit, the secondary coil should be reliably grounded, ...

LED warning light function 1. The luminous method selection items are: solid light, shiny, burst flash, constant/shiny mix. 2. The installation base is: L rod, straight rod, folding, and barrel type. Effect of LED warning light_Effect in different scenes 1. Construction unit On the road ...

Overcurrent Relay (OCR) It operates when a certain value or greater of current flows through. There are two elements: overcurrent detection (known as a timing element) and short-circuit current detection (as an instantaneous element). Earth Fault Overcurrent Relays (OCGR, GR) While...

Signal relays are used more in secondary maintenance circuit circuits. It tells the right people exactly what is wrong with the maintenance. The power relay is a bit like a discriminant sentence in mathematics. When a constant is entered, the satisfactory and unsatisfactory conditions will output different results. Merit...

1. The wiring of the current transformer should not present problems, otherwise it will lead to failure to operate normally, and there may be damage to the transformer. In this case, the primary winding needs to be connected in series with the measurement circuit, and the secondary winding needs to be connected in series with all the loads. 2. Estimation ...

1. Since the current through the AC electromagnetic relay is a changing alternating current, the magnetic flux in the magnetic circuit also changes with the alternation (sinusoidal law instead of straight line law). The suction force of the armature is varied between 0 and the maximum, so the suction of the AC electromagnetic relay is pulsating, variing.

Various specifications, with indicator light, with manual test button, with surge suppression loop and other functions Coil control voltage DC6V-220V, AC6V-240V(50/60HZ) The rail type is equipped with a variety of adapting sockets LED indicator, DC is green, AC is red Illuminating...

1. What are the current specifications of universal transfer switches? At present, there are four forms: 10A, 16A, 25A, and 63A 2. What are the positioning angles of the universal transfer switch? At present, it is divided into four angles: 30°, 45°, 60° and 90° 3. There is no customer's ...

1. Overhaul of the sensing mechanism For electromagnetic (voltage, current, intermediate) relays, the sensing mechanism is the electromagnetic system. The faults of the electromagnetic system are mainly concentrated in the coil and the moving and static iron cores. (1) Coil fault maintenance Coil failure usually has a coil absolute...

1. Disconnect the control power supply: Before making the low-voltage terminal contact adjustment, the control power supply should be disconnected first to avoid the current directly or indirectly passing through the relay contact, and avoid electric shock or damage to the relay. 2. Open the relay cover: Open the relay cover, you can see the inside of the relay.

1. Control switch: The high-voltage relay can open or close the high-voltage circuit to achieve the purpose of controlling the work of the equipment. 2. Protection circuit: The high-voltage relay can monitor the current, voltage, temperature and other parameters inside the high-voltage circuit, and automatically cut off the circuit when the circuit is abnormal.

1. The simplest and most effective way is to use a new solid state relay. 2. The other is to determine the voltage of the coil to avoid the voltage provided by the coil being less than the operating voltage. 3. Check whether the polarity is reversed. 4. Reasonable power-on time for the solid state relay coil, if ...

1. What are the installation methods of PB1 button? PB1S and PB1L are fastened with metal screws, and PB1J and PL1 are fastened with plastic nuts. 2. PB1 series pushbuttons can be assembled with up to several sets of contact modules as standard 2*3=6 3. PB1S shell ...

How relays work Relays generally refer to electromagnetic relays, that is, mechanical actions. The working principle of the relay is essentially to use one loop (generally a small current) to control the on/off of another circuit (generally a large current), and in this control process, ...

1. How many light sources are there for the TL-70 police light? There are 3 types, namely LED, incandescent and xenon. 2. What are the colors of the TL-70 police light? There are 5 types, which are red, yellow, green, blue, and white. 3. What are the types of TL-70 police lights? 3 ...

On May 8, 2019, APT held a grand online conference in Shanghai, Beijing, Guangzhou, Nanjing, Changsha and Tiantai...... and more than 20 cities across the country witnessed the new Siemens APT x. The new product of R series relay was released. ...