Siemens APT - FM series metal button indicator frequently asked questions

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 ...

How a current transformer works The principle of current transformer is based on the principle of electromagnetic induction. A current transformer is composed of a closed core and windings. It has a small number of turns on the primary side winding, stringed in the line where the current needs to be measured, so it often has the full current of the line ...

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. 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 ...

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 ...

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. Why does the indicator light still glow after the control power supply has been disconnected? This situation is caused by the presence of interference voltage, and this problem can be solved by ordering our anti-interference indicator light 2. What are the operating hours of the AD16 series indicators? More than 30000 small ...

Categorized by use According to different uses, current transformers can be roughly divided into two categories: Current transformer for measurement (or measurement winding of current transformer): provides current information of the power grid to measurement, metering and other devices within the normal working current range. Protecting Electricity ...

(1) Sealed relay: Relay with low leakage rate by welding or other methods to seal the contacts and coils in the cover and isolate them from the surrounding medium. (2) Enclosed relay: A relay that is sealed (not sealed) with a cover to protect the contacts and coils. ...

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. Differences in use The conversion ratio of the current transformer is inconsistent with the transformation ratio of the ammeter, which will lead to the inability to use the displayed value of the ammeter directly, and the proportional conversion must be carried out; If the transformer of ratio 5 is used on the meter of ratio 1, the secondary current of CT will generally exceed 1A, so that the transformer of 5 is used on a meter of 1 ratio. Than 1 ...

The new relay refers to the electromagnetic relay developed and produced in order to meet the special requirements of the new and meet the use of special environmental conditions, its main characteristics are small size, light weight, vibration resistance, shock resistance, load range from low level load to 5A, 28 V rated load, product ...

Rail protection relays A protective relay that works mainly as a result of accidents that occur in transmission lines. When this method works, the circuit breakers at both ends of the faulty line will be disconnected. Busbar protection relays A protective relay, mainly due to the power plant or transformer...

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.

1. Most of the multiple values can be seen from the nameplate attached to the instrument, which will show the style of the value/value, which can be known by dividing the previous value by dividing the back value when calculating the standard core-piercing turns. If the actual number of turns of the grommet does not conform to the standard, then the multiple should be ...

First, the principle of primary parameter selection of current transformer The rated primary current of the current transformer is determined by the actual load of the tested circuit, and the rated primary current of the current transformer should not be less than the rated primary current of the circuit.

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. 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) The influence of the internal resistance R2 and leakage impedance X2 of the secondary coil on the error: when R2 increases, the specific difference and angular difference increase; As X2 increases, the specific difference increases, but the angular difference decreases. Therefore, to improve the error, R2 and the appropriate X2 value should be minimized. Due to the secondary coil internal resistance R2 and leakage ...

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.