mcb circuit breaker circuit breaker Daily note

1, to avoid violent vibration, corrosive gases and prevent fluid flow into and prevent under irrigation and dry and ventilated place, do not obstruct ventilation fabric cover.

2, please use the three-plug circuit breaker‍ (grounding) receptacle, grounding screw on the unit must be properly grounded, otherwise the cabinet with a pencil measure would have charged phenomenon, which is caused due to the distributed capacitance induction, is a normal phenomenon, through the ground wire eliminated. If the cabinet serious leakage, measure the insulation resistance is less than 2MΩ, may be an insulating layer is wet or shorted circuit and chassis, should identify the reasons for troubleshooting before use.

3, 0.5 ~ 1.5KVA small power regulator uses fuses for overcurrent circuit protection purposes, 2 ~ 40KVA regulator role DZ47 breaker for over-current, short circuit protection, as is often blown fuse or circuit breaker trips frequently, should check whether the electricity is too large.

4, when the output voltage exceeds the protection level (phase voltage protection value adjusted at the factory 250V ± 5V), power supply automatic protection, cut off the power current transformer‍ supply output voltage, over-voltage lights at the same time, the user should immediately check the grid voltage or shutdown Regulators such as the occurrence of automatic power regulator (with no input output), you should check the mains voltage is higher than 28OV. If less than 280V should check whether the regulator failure. The reason to be identified before use.

5, if the regulator output voltage 220V deviate more, please adjust the potentiometer on the control panel to the normal output voltage (input voltage reach the voltage range can not be adjusted).

6, when the mains voltage is often the input voltage limit (<150V) or upper limit (> 260V) at the regulator, the limit is often affected by micro-switch touch, control failure prone. Then the regulator or the regulator can not only increase (or reduce only), you should first check the micro switch is damaged.

7. Keep the machine clean and dust will hinder rotation of the gear, the impact of the output voltage accuracy. Please contact surfaces clean and maintain coil cleaning. Brush wear serious pressure should be adjusted in order to avoid the contact surface arcing brushes and coils. Brush length less than 2mm should be replaced. Application fine sandpaper to be flat lighting coil arcing burnt black.

Picture ⒏ three-phase voltage regulator regulator input AC Contactors‍ must take over the zero line (neutral), or else the regulator does not work, and will damage the regulator and electrical equipment. Do not use the land line to replace the zero line, zero line can not access the fuse.

9, the regulator output voltage is below the rated voltage (220V or three phase 380V), you should check the input voltage is too low. When you reach the rated voltage at no load and load output below the rated voltage, which is due to the input line carrier surface is too small, too big load line drop, using the input voltage falls below the lower limit of the regulator adjustment range, then should be replaced enter thicker wire.

10, when a large single load power (such as air conditioning, etc.), while the input line is longer, the carrier surface is inadequate when the load is severely reduced operating voltage, it may be difficult to start using load; when the load of work time and temporarily shut down, prone instantaneous overvoltage output power, such as the occurrence of such a phenomenon, not a regulator failure, should improve the input line (bold line, try to shorten the length of the input lines to reduce line pressure drop).

11, when the regulator output voltage is a serious deviation from 220V, you should check whether the input voltage ① within the voltage range; ② motor gear is badly worn, rotation air circuit breaker‍ is flexible; ③ limit switch is damaged: ④ coil plane is smooth; ⑤ Dashboard for damage

Air circuit breaker Safety issues

⒈ power supply during power-up, do not open the power supply or teaser power supply input and output connections, to prevent electric shock or other electrical AC Contactors‍ accidents.

⒉ power supply input and output connections must be reasonably arranged to prevent stampede frayed, causing leakage accident.

⒊ power supply must be grounded, because they do not run a ground wire and cause electric shock or personal injury air circuit breaker‍, the responsibility of the user.

⒋ ground power supply can not be connected to the heating pipes, water pipes, gas pipelines and other public facilities, in order to avoid infringement of third party rights or harm.

⒌ should regularly check the input and output wires of the power supply, so as not to loose or fall off, thus affecting the normal use of power supply and electrical safety.

Optional ⒍ regulator cable must meet requirements can carry enough current capacity of the cable.

. ⒎ regulator should be gently, at work to avoid Circuit Breakers‍ severe vibration;

⒏, ensure regulator carbon brush spring has sufficient pressure to avoid carbon brush arcing contact surface and the coil;

⒐, non-professionals do not open the power supply or power supply repair.

Works

Because section contains electrical coil assembly will produce electricity in the early hinder current eddy currents produced both weaken the instantaneous voltage electrical start-up, resulting in a slow start, will strengthen the instantaneous voltage generated after disconnection, may produce sparks damage circuit. At this point we need a regulator to protect the normal operation of the circuit.

Regulator consists of voltage regulator circuit, a control circuit, and a servo motor, etc., when the input voltage or the load changes, the control circuit sampling, comparing, amplified, and then driving the servo motor, so that the position of the regulator to change the carbon brush, by automatically adjusting the turns ratio, thereby maintaining a stable output voltage. Larger capacity regulator, also adopted the principle of Switchgear & Substation‍ working voltage compensation.

CNC Electric AC contactor is a contactor

AC contactor is a contactor, the typical structure is electri calmete‍ divided into direct-acting double break (LC1-D / F *) and single-breaker rotary (LC1-B *). AC contactor and relay control loop combination, remote control or interlock related electrical equipment. The most commonly used products are mainly for CJ series CJX2 series, CJ20 series, CJT1 series 3TB, B series.

The basic composition

AC contactor has four main components: (1) Voltage stabilizer‍ electromagnetic systems, including attracting coil, moving core and static iron core; (2) contact system, including three sets of main contacts and one or two groups of normally open, normally closed auxiliary contacts, which are linked together and moving core linked to each other; (3) interrupter device, usually larger capacity AC contactor has interrupter device to quickly cut off the arc burn from the main contact ; (4) insulated housings and AC Contactors‍ accessories, all kinds of springs, transmission, short ring, terminal and so on.

mcb circuit breaker

Works

When the coil is energized, the electromagnetic suction static core, the moving core pull, due to contact with the moving core linkage system, so moving core driven by three runs Switchgear & Substation‍ while moving contacts, contact closure, thereby turning power supply. When the coil is de-energized, suction disappeared, moving core linkage relies in part on the reaction force of the spring and separation, the main contact is open, turn off the power.

Use connection

One: There is generally a three-phase contactor eight points, three inputs, three outputs, there are two control points. Corresponding output and input are easily able to see it. If you want to increase the self-locking, then you also need the output from a terminal point of the line to the control point Circuit breaker‍ on it.

Two: first of all should know the principles of AC contactor. He is outside the power applied to the coil to generate an electromagnetic field. Power-pull, the contact point after power is disconnected. Know principle, you should figure external power supply contact, i.e. two contacts coils, generally in the lower part of the contactor, and at each side. Several other inputs and outputs are generally in the upper part, to see that. Also note that the number of applied voltage power supply (220V or 380V), are generally marked must have. Also note that the point of contact is normally closed or normally open. If you electri calmete‍ have self-locking control, according to the principle haircut line on it.

Air circuit breaker Model division

In electrical engineering. A contactor is used to connect or disconnect a DC circuit breakers‍ main circuit or a large capacity with a load control circuit automatic switch, the main control object is a motor, in addition to other electrical loads such as electric heaters, electric welding, lighting equipment, contactors not only turn on and off the circuit, but also has a protective effect of low-voltage release /. Contactor control capacity. Suitable for frequent operation and remote control. Is one of the important components of the automatic control system. Universal contactor can be broadly divided into the following categories.

An AC contactor. Mainly by the electromagnetic mechanism, mcb circuit breaker‍ contact system, interrupter devices and other components. Commonly used CJ10, CJ12, CJ12B series.

2 DC contactor, generally used to control the DC electrical equipment, winding through the DC, the operation principle and structure of the DC contactor AC contactor is basically the same [1].

But now contactor models are re-divided. All of the AC series.

1; AC-1 class contactor is used to control non-inductive or slightly sense circuit.

2; AC - class 2 contact is used to control the start and wound rotor induction motor breaking in.

3; AC-3 and AC - 4 contactor controlled induction Switchgear & Substation‍ motor can be used for frequent starting and breaking.