Screw terminal blocks of the KW series KE10 for SIP


Винтовые клеммники КВТ серии КЕ10 для СИП

If you look at the statistics of the causes of fires in residential buildings, you can see that a significant part of the fires are due to faulty electrical wiring. And it is quite possible to attribute connection to the street network via a SIP wire (Self-supporting Insulated Wire) to a special risk group.

The design of the SIP wire includes the main (phase) cores consisting of aluminum or aluminum alloy, and the zero core. The zero conductor can be made entirely of aluminum alloy, or have a steel core inside, coated with aluminum alloy on the outside. It should be noted right away that the SIP wire with copper cores is not available.

Конструкция провода СИП

For SIP wires, however, as for other types of cables and wires, the most important parameter is the resistance of the core, not its cross section. In addition, according to GOST 31946-2012, SIP wires are designed for overhead transmission lines. The exception is wires with the letter "h". They can be laid on the walls of buildings from the outside, and then at a certain distance from the wall surface. Naturally, in such conditions, the reliability of the connections of the SIP wire with the internal wiring is of particular importance.

The screw terminal blocks of the KE10 series manufactured by the Kaluga KW plant are specially made to solve such tasks as connecting and branching aluminum and copper conductors inside racks and shields in supports and masts of street lighting, as well as during the installation of self-supporting insulating SIP wires. Connecting the SIP aluminum wire directly to the input device is, to put it mildly, undesirable. This is due to the fact that the contacts of the input devices are made of copper or brass. As you know, copper (brass, bronze) and aluminum have different coefficients of thermal expansion, which can lead to deterioration of the contact, burning of the wire, melting or ignition of the insulation of the wire. When using the KE10 terminal blocks, each wire has its own screw clamp, which allows the use of both copper and aluminum wires in any combination and of different cross-sections. In addition, the KE10 terminal blocks have a special abrasive paste on the contact part, which ensures guaranteed contact of aluminum and copper wires.

It should be borne in mind that the connection of the wires to the terminal block must be made using the tips. According to GOST 10434-82, "collapsible contact connections of multi-wire conductors or cables with flat and pin terminals must be performed ... after termination with tips."

KE 10 terminal blocks can be used in networks with operating voltage up to 1000V in the temperature range from -60 to +55°C.

When using a CNC protective cap (only for 4-pin terminal blocks), the degree of protection of such a connection is IP44.

The transparent insulating housing provides visual control both during installation and during the entire operation time. The housing is non-removable, which guarantees reliable insulation of the contact connection. The tightening torque of the contact part is 10 Nm.

Main technical parameters

Number of contacts4646
Material of the contact partaluminum alloy
Material of the clamping boltsanodized steel
Insulating housing materialpolycarbonate
Operating voltage, V≤1000
Dimensions, mm61x30x3690x30x3661x30x3690x30x36
Core cross section (copper), mm21,5-252,5-25
Core cross section (aluminum), mm210-3510-50
Operating temperature range,°C-60...+55