Bar switches are different from regular switches. They are critical to ensuring effectiveness. For example, when the current exceeds a certain amount of time, they cause heat to be generated, allowing the fuse to switch the fuse to further assist in breaking the circuit. Therefore, as a kind of current protection device, they can achieve the actual effect of protection and protection, and the use of circuit induction wiring system in daily life can also avoid potential safety risks to the greatest extent.
1. What is a strip switch?
The full name of bar switch bar fuse blocking switch is a current protection device, which melts the melt and breaks the circuit according to the heat generated after the current exceeds the specified value for a certain time.
The bar switch should fit the following three points:
1. Protect the switch with a fuse.
2. Under the normal circuit specification (including the required load), the blocking switch that can be connected, load-bearing and overcurrent current, and under the abnormal circuit specification (such as short-circuit fault) and the required time, the blocking switch can be connected.
3. When the suction part, the safety protection of the circuit can be carried out to ensure that the circuit is turned over and works safely.
Some frequently asked questions about bar switches were added. In general, this type of switch is suitable for traditional routes and has guaranteed results. Generally, it is not used as a motor switch, because the penetration current of the motor is too large when the motor starts and stops, it is very easy to destroy the switch. Third, even for the same switch, when the rated heating current of the switch is not the same, the barrier switch used is not the same, such as the HR6 barrier switch. When the rated current is 100A, the selected barrier switch is NT00, and when the current is 250A, the selected barrier switch is NT1. In view of this, when purchasing a barrier switch, we must pay more attention, compare more, and choose the appropriate model standard based on our own situation to avoid many unnecessary inconveniences.
|
More on that
|
Difference Between Fuse and Circuit Breaker – Vernal
The principle of the fuse is to use the current to flow through the conductor to heat the conductor, and the conductor is ablated after reaching the melting point of the conductor, so the electrical appliances and circuits used for circuit maintenance are not burned out. It is an accumulation of heat, so it is also able to complete overload maintenance. Once...
|
|
Introduction to Laminated Busbar System – Wiener
In the power system, the bus connects the various current-carrying branch circuits in the power distribution device together, and plays the role of collecting, distributing and transmitting electric energy; According to the appearance and structure, the bus bar is roughly divided into three categories: hard busbar, soft busbar and closed busbar.
...
|
|
Lighting power busway service life - Wienal
The system consists of a current box, a bus body, a branch plug and device accessories.
When the heat dissipation of conductive copper strip has been effectively improved, the contact between the copper strip and the inner wall of the tube is reduced, and the insulation resistance and anti-aging ability of the tube body are strengthened, so as to prolong the service life of the pipe body. The life of the tube far exceeds ...
|
|
There are several main ways to wiring the Wiener bus
Bus line refers to a product made of copper (copper bar) and aluminum material with high conductivity to transmit electrical energy and have the ability to collect and distribute electricity. The main conductor used by the power station or substation to transmit electrical energy. Through it, the output of the generator, transformer or rectifier ...
|
|
The role of plug-in busway – Wiener
Generally speaking, plug-in busway is mainly used for power transmission. We know that all conductors will have losses, and the losses caused by the flow of electricity through conductors are larger and some are smaller. For example, compared with the aluminum wire with the same wire diameter and the copper wire, the loss of aluminum is larger, and the loss of copper is smaller. That is, the conductivity ...
|
|
Busbar wiring problems of busbars - Vernal
Bus, transformer, generator set unit wiring. It has the characteristics of simple wiring, less switchgear, easy operation, suitable for expansion, and because there is no generator outlet voltage bus, the short-circuit current of the low-voltage side of the generator and the main transformer is reduced.
...
|
|
Uses and technologies of cable junction boxes – Wienal
XBT series mine flameproof communication cable distribution box has the characteristics of small size, reasonable cable import and export, and wide coverage. Each distribution box has 4-10 inlet and outlet bells, which is suitable for HUYV type mine signal cable in coal containing sexual gas (methane) mixture (non-mining face).
|
|
The common DC bus of the inverter system - Wiener
1. Three-phase AC power supply inlet
The power input of each inverter is connected in parallel on the same AC bus, and the power supply phase of the input of each inverter is consistent. In Figure 3, the circuit breaker QF is the incoming protection device for each inverter. LR is an incoming reactor, when multiple inverters are in the same ...
|
|
Frequently Asked Questions for the Installation of Closed Busbars – Vernal
1. The cable in and out of the bridge is not piping
2. The orientation of the bridge grounding and crossing is incorrect, and the special grounding line of the spray or painted bridge device is not equipped with a special disc gasket
3. The fireproof board of the electric well is not fixed, and the fireproof plugging is not perfect
4. The bridge is opened at will, and no standard accessories are used.
|
|
Vernal fuse core Siemens fuse alternative
Due to the long delivery time of the Wiener melt core, whether the Wiener fuse can be replaced by Siemens' fuse, the answer is yes, so it is recommended to use Siemens' Rong Xin, which corresponds to the following
3NA38012C NH-Fuse NH-,00(0 ...
|
|
Introduction to the Wiener busbar system
The 60mm bus system refers to the three- or four-wire bus spacing of 60mm.
In the 60mm bus system, the different cross-sectional areas of rectangular copper bars or special-shaped copper busbars such as 2T and 3T can be used to achieve the optimal distribution of current intensity levels, ...
|
|
Uses and characteristics of busbar systems – Wienal
The bus system is a system with standardized bus distance, which is used in low-voltage power supply and distribution switchgear and control equipment, so that the bus can play the effect of conducting electricity and supporting electrical components.
The system is divided into 40, 60, 100 and 185mm ...
|
|
Aluminum alloy busway circuit continuity - Wiener
The continuity of the aluminum alloy bus duct maintenance circuit is related to the PE line, and the crossover PE wire conductor bus of the maintenance conductor and the two-unit bus bar should reach 50% of the phase line, the equivalent cross-sectional area. The continuity resistance of the housing and PE line maintenance circuit is ≤ 0.005 ohm female, and the unit with jumper wire is not less than the maintenance conductor.
|
|
Classification of busway – Vernal
According to the different uses of the bus duct, the bus groove is generally composed of the start bus slot, the straight bus slot (without partition jacks and jacks), the L-shaped straight (horizontal) curve bus, the Z-shaped straight (horizontal) offset bus, the T-shaped straight (horizontal) tee bus, the X-shaped straight (horizontal) four-way bus, the transformer...
|
|
The connection method of the tubular busbar
In the industry, tubular bus bar can be described as one of the more common equipment, with high mechanical strength, good insulation, wide range of application and other characteristics of many enterprises. So do you know what are the ways to link tubular busbars?
...
|
|
The difference between the busbar system and the traditional wiring
The advantages of the busbar system are:
1. The Wiener bus system adopts the bus bar non-perforation connection technology, and the electrical components are firmly connected to the busbar;
2. It saves the device space, saves the redundant wiring, saves the device time and labor;
3. The busbar ...
|
|
What is the Wiener bus system
The Wiener bus system is a standardized system for bus spacing, which is used in low-voltage power supply and distribution switchgear, so that the bus can both conduct electricity and support electrical components. The system is divided into 40, 60, 100 and 185mm systems.
...
|
|
Bus voltage non-system equipment failure and solution - Wienal
In order to ensure the safe and economical operation of the power system and its power generation, supply and electrical equipment, power grid users require the voltage to operate in three ways: forward voltage regulation, reverse voltage regulation and constant voltage regulation. However, when the power grid is in practice, due to the change of active and reactive power output, the increase or decrease of electricity load, and the system wiring party...
|
|
NH-Fuse Type Disconnector Instructions for Use
When switching on and off components, you should pay attention to the following:
–In accordance with VDE-0105-100, only operation by electrical professionals or persons with electrical knowledge is allowed (operation without electricity, closing, disconnecting, and replacing fuses ...).
|
|
What are the hazards of 220V DC in the bus system - Wiener
The grounding of the DC system should include two situations: the one-point grounding of the DC system and the two-point grounding of the DC system.
In the DC system, the positive and negative poles of DC are insulated from the ground, and there is no grounding current when generating a ground current when one pole is grounded.
|
|