品牌:AB
起订:1台
供应:1111110台
发货:3天内
800G-V2FX
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陕西欣鸿然自动化设备有限公司
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因为直流不象交流那样有零点（电流零交叉点），因此一旦产生电弧就很难消除，电弧时间很长。而且电流方向不变，所以会出现接点迁移现象，接点会由于凹凸不平而无法断开，可能导致误动作。
有些种类的负载的恒定电流和浪涌电流相差很大。需在允许的浪涌电流值范围内使用。闭路时的浪涌电流越大，接点的消耗量和迁移量也越大，就会因接点的熔接和迁移导致接点无法开关的故障。
在含有电感应的情况下会产生反向感应电压，电压越高能量越大，接点的消耗和迁移也随之增大，
因此，需确认额定的条件，在额定值中标出了控制容量，但仅这些是不够的，在接通时和切断时的电压、电流波形、负载的种类等特殊的负载电路中，必须分别进行实际设备测试确认。微小电压、电流的场合需使用微小负载用产品。使用一般用途的银质接点时，
The button can be classified according to the operation mode, protection mode, types and features of the common button:
Open type: suitable for embedded and fixed in the switch board,
Control cabinet panel or console. Codenamed K.
Type: protection with protective shell, can prevent the internal button parts of mechanical damage or touch live parts, codenamed H.
Waterproof type: with sealed shell, can prevent water intrusion. Codenamed S.
Antiseptic: can prevent the intrusion of chemical corrosive gas. Codenamed F.
Explosion proof type: can be used for containing explosive gas and dust in the place without causing detonation, such as coal mines and other places. Codenamed B.
Knob type: hand rotation operation has on-off contacts, two position, mounted to the general panel. Codenamed X.
Key: a key is inserted into a rotating operation, can prevent misoperation or for special operation. Codenamed Y.
Emergency: big red button to highlight the mushroom head,
Button switch
To cut power use. The code for the J or M.
Self: inside the button with self-sustaining electromagnetic mechanism, mainly used in power plant, substation or test equipment, communication signal operators and instructions, general operation panel. Codenamed Z.
Light button: the button is arranged in the lamp, in addition to the publish operation command, a signal indicating, for control cabinet, console panel. Codenamed D.
Combination type: multiple button combination. Codenamed E.
Synchronization type: multiple contact interlock each other. Codenamed C.
Classification by purpose and structure:
1, open button
2, a normally closed button
3, composite button
Ambient air temperature
-25 ~ +40 degree C C
Altitude: 2000m
Relative humidity: less than 90%
The pollution level 3
The level of protection IP55
Switch: AC-15 36V/10A 110V/10A 220V/5A rating 380V/2.7A 660V/1.8A
DC-6V/4A 12/4A 24V/4A 48V/4A 110V/2A 220V/1A 440V/0.6A
Vheating current: 1th 10A
Shock resistance: less than 50m.
Insulation resistance: 10M ohm
Mechanical life: general button n = 100 * 10^4; the knob over 30 * 10^4 times.
Key button n = 5 * 10^4; emergency stop button over 5 * 10^4
Note
AC and DC circuit switch ability
Button switch (Figure 5)
Big difference, need to confirm the ratings.
DC control capacity is very low. This is mainly because the DC as the exchange that (zero current zero crossing point), so it is difficult to remove once the arc, arc for a long time. But the current direction, so there will be the phenomenon of migration due to uneven contact contact, and cannot be disconnected, may cause malfunction.
Some kinds of load constant current and surge current difference. The surge current allowed value range. When the surge current closed, consumption and migration quantity of contacts is also bigger, will lead to failure due to the migration of contact can not switch contact welding and.
In the presence of electric induction conditions will have a reverse voltage, the higher the voltage the greater the energy consumption, and migration of contacts is also increased,
Therefore, need to confirm the rated conditions, the ratings indicate the control capacity, but that alone is not enough, the special load circuit is switched on and off when the voltage, current waveform, load type, must be respectively the actual equipment test confirmation. Small voltage, current situation requires the use of small load products. The use of general purpose when silver contacts,
Button switch (Figure 6)
May lead to reduced contact reliability.
Micro button switch, button switch beyond the range of high load, please connect the load for the relay.
Determine the aircraft rated conditions are as follows:
Inductive load: power factor above 0.4 (AC), time constant 7ms (DC).
Light load: load surge current is equivalent to 10 times the constant current.
Motor load: inrush current with load equivalent to 6 times the constant current.
Note: the inductive load is especially
800G-DLSGXK
800G-DLSGXL
800G-DLSR
800G-DLSRXK
800G-DLSRXL
800G-DLSW
800G-DLSWXK
800G-DLSWXL
800G-DLSY
800G-DLSYXK
800G-DLSYXL
800G-F2
800G-F3
800G-F4
800G-F5
800G-K14
800G-K16
800G-K24
800G-KSB34H
800G-KSL32H
800G-KSL34H
800G-KSL37H
800G-KSM21H
800G-KSM22H
800G-KSM23H
800G-KSM31H
800G-KSM32H
800G-KSM33H
800G-KSM34H
800G-KSM35H
800G-KSM36H
800G-KSM37H
800G-KSR21H
800G-KSR31H
800G-KSR34H
800G-KSR35H
800G-LF1
800G-LF3
800G-LF4
800G-LF5
800G-LF6
800G-M2
800G-MKE
800G-MPE
800G-MPE99
800G-N2
800G-P1
800G-P3
800G-P4
800G-P5
800G-P6
800G-SB3
800G-SB3H
800G-SL3
800G-SL3H
800G-SM2
800G-SM2H
800G-SM3
800G-SM3H
800G-SR3
800G-SR3H
800G-U2FX
800G-V2FX
800G-XBA
800G-XBM
800G-XBN
800G-XLC3A
800G-XLC3M
800G-XLC3N
800G-XLC8A
800G-XLSA
800G-XLSM
800G-XLSN
