Siemens APT new x. The new product of R series relay was released

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. The inspection basis for whether the current transformer is damaged: 1. The basis for checking whether the polarity is damaged: The primary winding of the current transformer is marked P1 and P2, and the secondary winding is marked as S1 and S2. If P1 and S1 are the same name, then this sign is called reduced polarity. Primary current from P1 ...

1. Standardize current transformer: the top of the transformer verification is used as a standardizer, and the accuracy is usually more than two grades higher than that of the tested. 2. Load box: imitate the practice operation status of the tested transformer. 3. Transformer ...

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) 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. ...

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. Multi-tap current transformer. The primary winding remains unchanged, and when winding the secondary winding, several taps are added to obtain a plurality of different transformation ratios. For example, two taps are added to the secondary winding, K1 and K4 are 800/1A, K1 and K3 are 600/1A, and K1 and K2 are 400/1A, that is, the transformation ratio is 400-600-800/1A...

1. Current transformers are classified according to the installation method According to the installation method, the current transformer can be divided into through-type current transformer, pillar type current transformer, bushing type current transformer, and busbar type current transformer. Through-type current transformer: used to pass through the screen or wall...

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 ...

1) The wiring of the current transformer should comply with the principle of series connection: that is, the primary winding resistance should be connected in series with the tested circuit, while the secondary winding resistance should be connected in series with all instrument loads 2) According to the size of the measured current, select the appropriate transformation ratio, otherwise the error will increase. At the same time, one end of the secondary side must be grounded in case ...

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 ...

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 ...

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, ...

(1) Micro-power relay: when the contact open circuit voltage is DC 28V, the (resistivity) is 0.1A, 0.2A relay. (2) Weak power relay: when the contact open circuit voltage is DC 28V, (resistivity) is 0.5A, 1A relay. (3) Medium power relay ...

(1) The insulation between the iron chips is damaged Problem: The temperature rises during operation. Possible causes of the problem: (1) Poor insulation between iron chips (2) The use of harsh environmental conditions or long-term operation at high temperature to promote the aging of insulation between iron chips. （ ...

01 The role is different Proximity switches are contactless switches with a long life and are suitable for "pass-through signals". The travel switch is also known as the limit switch, the travel switch and the limit switch are both position switches, but the travel switch can detect the stroke, and can be used as an input signal to control the circuit at a certain distance ...

Common types of metal button switches include self-locking switches, self-reset switches, knob gear switches, lever gear switches, locking switches, etc.; Because the metal button switch is small in size, easy to install, metal material, voltage can be used from 9-220V, and the appearance of metal texture ...

1. What are the basic combination colors of combination lights? Red, yellow, green, blue, white, bicolor. 2. What are the different types of combination light panes? F, H, L, V, G any combination 3. Is the lampshade detachable? OK 4. Combination light ...

On April 22, 2015, the "2015 China Automation Industry Annual Conference and the 10th China Automation Industry Century Event" sponsored by the Chinese Association of Automation was held in Beijing. At the conference, APT won the "2014 Top Ten New Enterprises in China's Automation Field" award, which was awarded by APT last year.

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...