Siemens APT Relays – The difference between AC relays and DC relays

1. The resistive load should not exceed 60% of the rated current; 2. Overcurrent and load short circuit may cause permanent failure of the internal thyristor in SSR, so it is necessary to install a fuse or air switch, and a fuse can be used if the capacity is small; 3、 ...

1. Poor contact Poor contact is one of the most common faults in high-voltage relays, which can lead to problems such as hot terminals ® and burned contacts. Workarounds include regularly checking terminals and set screws for loose and cleaning contact surfaces. 2. Excessive wear At...

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 ...

First, the contact is loose and cracks The contact is the electrical contact part of the relay to complete the switching load, and the contact of some products is riveted and pressed, and its main drawbacks are loose contacts, cracked contacts or excessive dimensional position deviation. This will affect the contact reliability of the relay. Shovel appears ...

1. The influence of the ambient temperature The load capacity of the solid state relay is greatly affected by the ambient temperature and its own temperature rise, during the use of the device, it should be ensured that it has good heat dissipation conditions, the rated working current of more than 10A products should be equipped with radiators, and the products above 100A should be dissipated.

daily life There are many applications of travel switches, and it is found in many electrical appliances. So what does such a simple switch do? It mainly plays the role of chain protection. The most common example is its use in washing machines and tape recorders (VCRs). ...

1. Choose the right relay: When choosing a high and low voltage relay, you should choose the right product according to your needs, such as selecting according to the rated voltage, current and other information 2. Installation location: high and low voltage relays should be installed in dry, ventilated, non-corrosive gas, less dusty areas, ...

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) Electromagnetic relay: an electrical relay that works by using the suction force generated by the current in the input circuit between the electromagnet core and the armature. (2) Solid relay: refers to a kind of relay in which electronic components perform their functions without mechanical motion components, and the input and output are isolated.

1. Contact failure (1) The phenomenon that cannot be disconnected due to mechanical occlusion of the contact (the needle-like protrusion and pit formed on the contact bite each other), fusion welding, or cold welding. (2) The contact wear of the relay is caused by the absence of arc extinguishing devices or measures, or improper parameter selection, ...

1. What is the maximum voltage that can be used for an ALH transformer? AC low voltage up to 720V 2. Is there a protective grade product for ALH transformers? II-P AND III-P are available in both protective grades 3. What is the maximum primary current of ALH transformer? The maximum primary side current is 8 ...

Seeking advanced, perfect and excellent Xijia APT to concentrate on research and development, and constantly change customs, the launch of the metal flat button indicator FM series is to complete the perfect integration of appearance and performance. Ultra-thin flat round device, metal shell and buttons, high-value appearance Product ...

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

1. Various specifications, with indicator light, with manual test button, with surge suppression loop and other functions 2. Coil control voltage DC6V-220V, AC6V-240V (50/60HZ) 3. The rail type is equipped with a variety of adaptation sockets 4. LED indicator, DC is green, AC is red ...

Tianjin is a typical industrial city. Due to the steady progress of "three districts and one base", the advanced manufacturing industry has developed rapidly in recent years. Siemens APT brought a variety of low-voltage control products to the 14th China (Tianjin) International Industry Fair held from March 15-18. Siemens APT has launched the PB1...

1. Measure the resistance of the contact Use the resistance level of the universal meter to measure the resistance of the normally closed contact and the moving point, and its resistance value should be 0, (the contact resistance value can be measured in a more accurate way within 100 milliohms); The resistance between the normally open contact and the moving point is infinite. From this, it can be distinguished which is a normally closed contact ...

The excitation current is the main cause of the error of the current transformer, so reducing the excitation current can reduce the error (1) The core is made of materials with high permeability, because the magnetic properties of the core not only affect the ratio difference and angular difference, but also affect the saturation multiple. (2) Increase the cross-section of the iron core and shorten the magnetic circuit.

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. ...

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, ...

merit 1. High life, high reliability: solid state relay has no mechanical parts, the contact function is completed by solid devices, because there are no moving parts, so it can work in a high impact and vibration environment.