DC / NH / Master switched
Busbars for NH fuse switch disconnectors for large cross-sections
The cost of investing in renewable energies is continuing to grow. Increased costs for additional items such as copper are areas in which investors would like to make savings. After all, the complex wiring of NH fuse switch disconnectors for the increased safety of meter facilities with large cross-sections is expensive.
- DC: The wiring of safety switches and circuit breakers to protect power lines and equipment in industrial plants.
2. NH disconnectors: For the wiring of NH disconnectors used in transformer stations, main distributions or domestic junction boxes. These can also be used in aviation, wind power plants or rail transport.
3. Master switches: With traditional cabling, problems can arise in the event of heat, flexibility or individuality, requiring simple wiring of the master switch using busbars.
FTG’s busbars for NH fuse switch disconnectors stand out because of their compact design, wide choice of different versions for all sorts of equipment, copper cross-sections from 35 to 50 mm² and fast, space-saving installation. They also considerably reduce costs.
Power Distribution Block for Solar Applications
Distributors of solar systems require a point to collect the negative and positive pole. The small distributor PDB Solar serves as a transfer point from the solar panels as protection. This means that up to 24 solar panels can be collected on the terminal and connected to the fuse by means of two setscrews as a large cross-section. The terminal is suitable for UL and IEC and offers the possibility of connecting aluminium or copper conductors from 2.5 to 16 mm². (#38690)
Single Pole Busbars for Solar Systems
For easy and fast wiring of solar systems, single pole busbars support the work. For applications in the DC range we deliver up to 50 mm² and a rated voltage of 1500 VDC for solar applications. To avoid errors in the wiring or connection, the special busbars are already available with an integrated connection terminal. Therefore there is no slipping of the clamp. Depending on the application, the busbar with different connection angle of the feed-in terminals is available in 90 °, 180 ° or 270 ° for a cross section up to 50 mm². The special busbar with pins is available with step distances of 17.8 mm and 22.5 mm. (Image shows: #SKS1043 or #SKS1050)
Photovoltaic electrical installation
Simple power connection using busbars
Generating electricity using solar cells involves transforming the direct current (DC) obtained into alternating current for domestic use. To avoid problems, this requires the correct power distribution between the fuses, which in turns calls for special application- and device-specific step distances for the rails. In addition, special profile requirements must be applied to ensure that the rails can withstand a voltage of up to 1500 V DC.
Step distances vary enormously among equipment manufacturers, but an individual grid dimension is a better way of monitoring heat development on the rail. FTG meets all these criteria as the supplier of switchgear for photovoltaic systems. FTG supplies 1- to 4-pole busbars with different cross-sections and step sizes prefabricated from the factory with the necessary accessories such as feed-in terminal blocks.
Connection Terminals LPDB
The DIN rail holder (KAH) in combination with the cost-effective KA terminal series offers a simple power supply, not only outdoors. In the future, the connection terminal will provide more comfort and improved handling with the new DIN rail holder in the installation.
The terminal can be the connection of several conductors. To mount the holder, first snap it onto the DIN rail. The cable is to cut to individual length and to be fixed in the clamp. This is quickly closed and then easily pushed onto the holder. Despite the compact design, in ring connections currents up to 160 A can flow. As outgoings, terminal points up to 6 mm² are available.
In an infrastructural environment, the terminal initially served to form ring circuits such as in street lights, the power supply of ship docks or campsites. However, the applications are much more diverse. (#KA50xH)
50m Value Package
For needs-based and individual montages, there is the advantage pack of 50 meters stainless steel earthing strap with associated clamping lock.
The stainless steel strap, which can be cut to individual lengths, contains a total of 50 meters of band for assembly. This is for use in the field of grounding, to protect against lightning strikes or for the discharge of electrical currents. An application in the field of assembly is possible. According to VDE 0190 / 5.73, the strap is applicable for use with earthing systems.
The compact design in the advantage pack offers easy handling with assembly instructions on the environmentally friendly packaging and a viewing window to keep an eye on the current stock. The order reminder on the last five meters of strap gives once more a more accurate indication. (# 0950Ni) In addition, there is the corresponding lock clamp made of galvanized steel in a pack of 50 pieces. (# 0952Ni)
Lightning and overvoltage protection
Equipotential bonding, or earthing, is used to avoid differences in voltage. According to VDE requirements, when low-voltage systems are constructed, protective measures must be taken to prevent electric shocks in buildings (DIN VDE 0100-540 and DIN VDE 0185-305). Here, for example, domestic installation PE conductors and foundation earths are collected on an equipotential bonding bar in order to balance out voltage differences. This is what an equipotential bonding bar does. The main equipotential bonding consists of a system of electrical connections between the main protective conductor, main earthing conductor, main water pipe, main gas pipe and other metal pipework systems. These systems and the earthing conductors for them should be connected with an equipotential bonding bar close to the main supply service, possibly in the service entrance equipment room.
The earthing bar is available in two sizes and has screw terminal connectors of different sizes for connecting PE conductors and other components.
The earthing devices are completed by earthing clips for galvanized copper and steel pipe for connecting metal pipes for water or heating supply. These are available with connection cross-sections between 2.5 and 16 mm² in various lengths.
Busbars for Arc Fault Detection Devices
Since December 2017, the use of a fire circuit breaker in the construction of new plants or the expansion or modification of existing systems, according to DIN VDE 0100-420: 2016-02 is no longer mandatory, but should be taken for granted. Electricity is one of the most common causes of fire, caused by damaged cable insulation, crushed wires, kinked plugs, loose contact points or faulty terminals.
Therefore, the use of fire protection switches, “Arc Fault Detection Devices” (AFDD) is recommended for low-voltage systems. These protect against the occurrence of dangerous, serial or parallel fault arcs in single-phase AC systems with currents up to 16A.
Everyone should therefore contribute to the safety of persons, capital goods and to prevent fires and in these applications retrofit AFDD circuit breakers made of halogen-free material.
Already years ago there has been a connection between electrical engineering and art. It was an art to manage the wiring safety devices in switchboards without any errors.
Conventionally, busbars for one to four pole wirings have been developed over the years which electrician can cut individually into the right length.
For, more efficiency FTG has developed the Eurovario busbar. This is a compact system which is prefabricated in Triberg. The ready-to-use busbars are available in various versions. At the beginning the main intention was to create a compact, a clear and a beneficial busbar which is fast to install and takes a less storage space. The main advantage of the busbar, a simple connection, will be quickly realizable for electricians if circuits are to add like is usually in domestic installations. Even with a small selection of busbars in stock a wide range of connection can be made in no time without complex dismantling of the old busbar and without sawing and burring.
The temporary solution for confined spaces
Space in the distribution cabinet is expensive. Space is often left between the mounting plate and the top hat rail when devices are installed on DIN rails some distance apart. But if there is no space left for additional fuse devices on the right, devices often have to be accommodated in the next one. This requires space behind the devices or on the side so that the next row can be wired.
The sparse amount of space available is used efficiently by onward connection using row connectors. The row connectors can run at the side or behind the devices and therefore save on assembly space.
Row connectors are available completely sealed or overmoulded, in 4-pole version, different colours or with a reduced distance from the mounting plate. The row connectors are prefabricated to suit customer requirements.
Stud Terminals are used in control cabinet construction and in the area of drive motors as connection terminals for high rated currents of up to 240 mm². This is usually used in the area after larger fuses, which is connected to one side of the stud terminal and with the other side to one or more switches distributed. Between the cable lug and the terminal, a tight connection is created thanks to the screw connection. If more motor movements are passed on to the distributor, the terminal scores with a high vibration resistance compared to other techniques.
The versatility of the terminal becomes clear when more outlets are required. Here a combination of several clamps has to be selected in order to distribute from large cross sections to several small outgoing cross sections. For larger cross-sections, the terminal offers the possibility of mounting two cable lugs. For example, instead of squeezing small cross-sections into a cable lug terminals for NH fuse-switch-disconnectors should be used. In addition, if required, two or even three terminals can be connected by a copper bridge.
Alternatively, the compact power distribution block of the PDB+-Series have the same application when four to six outlets are needed. (#STI025 – #STI240)
Auxigaine – The flexible power voltage busbars
FTG offers a wide range of flexible wiring systems. The double-pole Auxigaine busbars are suitable for superstructures up to 1.90m in length and for a maximum current of 125A. In addition, a horizontal and vertical installation is possible.
Thanks to Auxigaine busbars, it is possible to pick different potentials. These are for normal circuit breakers, power supplies or control modules (etc.). Thus, on the DIN mounting rail is more space for resources and there are no terminals necessary. The busbar offers maximum flexibility when potentials have to be changed or when new components are added.
For control cabinet manufacturers, the busbar offers many possibilities to save space, meets UL standards and can be flexibly adapted to the respective requirements.
Vertical busbars horizontally used
For many types of distributors, FTG offers a variety of components suitable as electrical equipment. Especially with high rated currents, the air-insulated busbars according to British Standard are extremely effective in their application.
In some cases it makes sense to apply the vertical busbar horizontally. As seen in the small distributor in the right picture. Here, the Pan Assambly busbar is used to save space in tight applications. Also, the feed is not done from below but above the pins of the busbar.
The so-called Pan Assambly busbars are therefore not only used in domestic installations, but also in solutions such as in industrial distribution boards or in connection with main switches.
BKNA Bow Terminal Series
For collecting a large number of wires in a restricted space
Sometimes, albeit rarely, N and PE conductors have to be collected at a point in controls or switchgear systems. Bimetallic cable lugs are still widely used for connecting supply lines on copper busbars. Holes need to be drilled into the copper busbars at intervals in order to fix the wire with a bimetallic cable lug, which is very time-consuming and expensive.
To collect the power on the copper busbar, clamps are needed that permit simple assembly and disassembly and are compatible with aluminium cable because of the rising price of copper today. Steel clamps of different types can bring large number of lines together on copper busbars. These are a cost-effective option and a better alternative to cable with a bimetallic cable lug, since they require less space and are can be fitted more flexibly and faster.
FTG’s enhancement, the BKNA series, can also be used for aluminium cable, since they incorporate an intermediate plate so that the aluminium and copper do not touch. The intermediate plate also stops the cable from bending by spreading the screw plate load on the cable end. Covers between the positioned steel clamps make the system contact-safe.
Carriers for DIN mounting rails
Compact, clearly laid out solutions are needed for use in control and switchgear construction as N and PE systems. Previously, installing a flexible system was often a complicated affair, and there were no generally applicable components either. For individually required lengths or different busbars, an element was specially designed for better installation. The FTG system carrier is a small, ingenious component. It can be simply clicked onto the DIN rail and fitted with conductors, thus producing a simple, effective power distribution. A particular bonus is that conductors of all types can be inserted in the system carrier. Flexibility is thus instantly combined with effective performance.
A different Type of Distribution
4-pole compact distributor with additional connection option
Distributing energy is often the biggest problem encountered by switchgear cabinet installers. The connection options for potentials are often too far away and unnecessarily long cable routes are often needed. In order to save cable and thus cash, a central distributor is the ideal choice. FTG produces four-pole distributors that can achieve this simply and safely. The distribution block makes wiring easy to trace and, in particular, keeps it tidy. The distributor is available in various sizes and options. A flexibly applied clamp provides for additional clamp points.