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
During road construction, it is more necessary to light up the warning lights, especially at night when the road conditions are unknown, it is very simple to cause some accidents, and unfamiliar people are simply tripped, and traffic jams will also be formed, so it is very necessary and necessary to establish warning lights, and it is necessary to have a warning effect.
2. The sedan is on the road
In the case of having to stop on the road, in order to ensure safety, the driver needs to place hazard warning lights in the vehicle to remind the traffic to pay attention to the new obstacles ahead, slow down and move safely. A good warning light can expand the visual scale of the hazard warning model, so that other drivers can see this prompt more clearly. So try to use warning lights with good performance.
3. Security fixed security booths and police motorcycles are patrolling
When there are lawbreakers who want to do illegal incidents, they will be affected and obstruct illegal actions, and those who have been injured can seek help in time, which can warn and restrain lawbreakers on a larger scale, effectively control and reduce crimes, and maintain social security and stability. LED strobe lights are installed in the community and on the sidewalks, so that everyone can see it when they pay more attention to it, and better protect themselves and their families.
4. Friends who like to travel by bike
If you want to make it easier on the way, or if you have a flat tire, you will have to keep getting out of the car. At this time, it is very dangerous to stop at a curve, and it is very easy to cause a traffic accident. Therefore, this kind of LED warning light, which is more convenient, plays a key role. And not only the effect of roadside warning, but also can be used as a lock when necessary.
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Siemens APT Pushbutton Switches – How Many Types of Pushbutton Switches Are There?
There are several types of pushbutton switches:
Pushbutton switches can be classified according to the way they are protected and how they are operated. It can be divided into open type and protected type, as well as waterproof type and anti-corrosion type, etc. And explosion-proof, knob-type, key-type, emergency-type, are also its ...
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APT won the 2014 Top Ten Cutting-edge Enterprises in China's Automation Field
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.
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Siemens APT Relays – The action of high and low voltage relays and how to adjust the low voltage side
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.
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Siemens APT limit switches – what are the limits used for?
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). ...
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Siemens APT Relays - Selection Method for Solid State Relays
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.
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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 Relays – Selection Principles for High Voltage Relays
1. Electrical parameter matching: The rated voltage and current of the high-voltage relay need to match the circuit demand, too small will lead to the failure of the switch, too large will waste the cost.
2. Mechanical parameter adaptation: the external dimensions, pin arrangement and wiring mode of the high-voltage relay need to be adapted to the actual installation ring.
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Siemens APT current transformer – the basis for whether the current transformer is damaged or the measurement is inaccurate
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 ...
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Siemens APT Relays – What should I pay attention to when selecting relays?
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 in the peach ...
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Siemens APT limit switch - wiring method of limit switch
1. First of all, there is a general understanding of the knowledge of the limit switch, which is usually composed of a shell, an interconnection system and an operating head.
2. First of all, the limit switch should be set to the desired location, and then connected, in addition, it is necessary to figure out the meaning of different letters, such as NC for the long ...
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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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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 main product technical parameters of relays
(1) Rated working voltage: refers to the voltage required by the coil when the relay is working normally. Depending on the type of relay, it can be either AC voltage or DC voltage.
(2) DC resistance: refers to the DC resistance of the coil in the relay, which can be measured by a multimeter.
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Siemens APT Current Transformers – How to view current transformers
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 ...
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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 Relays – Testing of Relays
(1) Measure the resistance of the contact: use the resistance of the multimeter to measure the resistance of the normally closed contact and the moving point, and the resistance value should be 0; The resistance between the normally open contact and the moving point is infinite. From this, it is possible to distinguish which is a normally closed contact and which is normally open.
(2) Coil resistance: multimeter R...
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Siemens APT relays – classified according to the protection characteristics of the relays
(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. ...
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Siemens APT – X-Series Control Box FAQ
1. The control box is made of ABS and PC, which material has better flame retardant performance?
ABS has good flame retardant performance.
2. What are the certifications for the control box?
3C & CE (for unperforated control box only)
3. What is the color of the grey cabinet of the control box?
Work...
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Siemens APT current transformer - working principle and characteristics of current transformer
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 ...
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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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