1. When selecting a relay, it is necessary to understand the load and type of its contact, because the contact method of the relay of the same model is different, with multiple groups of contacts and single group contacts. When selecting a relay, you can choose the type of contact.
2. And when the peach is selected, its rated current must be within the standard range. And the relay is the transistor used, so its rated current is lower than its own output current of the relay, and its own volume should also be understood. Because its size has a lot to do with the load, and the relay should be selected according to the circuit used, so that there will be no abnormal situation when connected.
3. When selecting a relay, it is necessary to understand its voltage and coil power supply clearly. For electromagnetic type relays, it is necessary to know whether it is AC or DC, and what voltage it is rated to work at. In the case of a normal type, it is lower than its own operating voltage.
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Siemens APT – PB1 Series FAQs
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 ...
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Siemens APT current transformer - inspection content of current transformer
1. Regularly check whether the current transformer is overheated, check whether there is discoloration in the terminal, and check whether there are sundries in the terminal box.
2. Check whether there is oil leakage in the oil level gauge in time to ensure that the oil level meets the use standard and there is no oil leakage.
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Siemens APT - ALH-0.66 series transformer FAQ
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 ...
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Siemens APT Relays – The difference between signal relays and power relays
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...
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Siemens APT Relays – What are the types of protection relays?
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...
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Siemens APT - LW39 series 10,000 revolutions FAQ
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 ...
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Introduction to the characteristics of Siemens APT ZY2 miniature relay
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
...
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APT made a wonderful appearance at the Northeast Automation Exhibition
On March 31, 2009, the 12th Northeast International Instrumentation and Industrial Automation Exhibition was successfully opened in Shenyang, the industrial hinterland of Northeast China. In recent years, with the national revitalization of the old industrial base in Northeast China and the gradual deepening of the equipment manufacturing industry, the rapid development of Northeast China has provided ...
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Siemens APT Limit Switches - Introduction to the types and characteristics of limit switches
Conventional domestic travel switch
LX19-001/111 in the LX19 series, LXK3-20S/T in the LXK3 series, JLXK1 series JLXK1-111/411/511 in the conventional travel switch are the most representative.
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Siemens apt - TL series police lights frequently asked questions
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 ...
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Introduction to the advantages and disadvantages of Siemens APT relays - solid state relays
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.
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Siemens APT Relays – Functions of High Voltage Relays
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.
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Siemens APT PB3 series of quick-fit pushbuttons wins CAIMRS "Automation Innovation Award"
On August 26, the CAIMRS2022 China Automation + Digital Industry Annual Conference was held in Beijing. Based on the fields of automation, digitalization, industrial robotics and industrial interconnection, this conference shared top digital innovation ideas, discussed the latest trends in the industry, and how to grasp the new round of science and technology.
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Siemens APT Relays - High Voltage Relay Fault Causes and Solutions
1. Some common faults of high-voltage relay coils
1. The common fault cause of the coil is often disconnected: whether the ultrasonic wave is used to clean the high-voltage relay, or whether the overvoltage is added to the coil will also promote the probability of the coil being disconnected.
2 ...
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Siemens APT Relays – The working principle of zero-crossing AC solid state relays
1. Working process:
AC zero-crossing solid state relays have the characteristic of turning on when the voltage crosses zero and turns off when the load current crosses zero.
Circuit diagrams, dimensions and drawings of zero-crossing AC solid state relays
When the optocoupler OPT is turned off (i.e. there is no input signal at the control end of the OPT ...
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Siemens APT Relays – a commonly used detection method for high and low voltage relays
1. Visual inspection method: observe the appearance of the relay by the naked eye, check whether it is damaged or deformed, observe whether the contacts are tightly contacted, and whether there are copper slag and other substances attached to the contacts.
2. Parameter detection method: use test instruments to detect the parameters of the relay, such as: ...
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Siemens APT Relays – How to Choose the Right Power Relay
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 ...
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Siemens APT current transformer - what need to be paid attention to in the use of current transformer
1. The secondary side of the current transformer shall not be open when working. Due to the small secondary impedance of the current transformer, the secondary side of the current transformer is close to the short-circuit state during normal operation. When the secondary side is open, a high voltage will be induced, which endangers the safety of people and equipment.
2. Electricity ...
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Siemens APT Relays - Precautions for the use of solid state 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.
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Siemens APT LA39 series button FAQ
1. What are the installation methods of LA39-A/B/C button?
There are five types in total: the Z1 diagonal screw unit, the Z2 straight screw unit, the Z3 nut device with fastening screws, the Z4 nut device without fastening screws, and the Z5 quick and convenient one-handed device
2. LA39 series products can be used ...
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