EKM is the labeling of such a product, as a junction box. It is required for installation inside the lighting pole, to connect the charging wires of lighting fixtures passing cables of the general power supply by means of protection and control equipment.
In the material you will learn the areas of application and design of junction boxes, study their classification, as well as technical characteristics on the example of EKM products 1271 1 D 2 5 16 K EKM 1261 1 D 2 5 16.
EKM junction box design 1271 1 D 2 5 16
Such connecting devices, as EKM 1271 1 D 2 5 16 and other modifications of the EKM type are equipped with the following elements:
- terminal block;
- fuse holder or DIN rail.
On the DIN rail, in turn, such special equipment may be installed:
- machines;
- timers;
- RCD and more.
Timers and automatic machines are not included in the delivery of junction boxes, and boxes for cables especially type, as well as fuses and other equipment can be made to order in addition.
EKM products 1271 1 D 2 5 16 and others connect the mains cables, as well as their branches to lighting fixtures. At the same time, they must guarantee high reliability. Boxes are placed outside, and also used for installation of internal lighting support. Their high degree of protection and insulation class can guarantee a high level of safety in terms of installation and operation.
Functional parts of EKM 1271 1 D 2 5 16 and other modifications:
- place of introduction, as well as contacts, which connect the cable from the group power supply network;
- fuses;
- place of introduction and contacts of connection with charging wires.
Presence of contact terminals allows to connect lap wires from a group power supply lap, regardless of their section or flexibility class. The devices are used together with sliding terminals or cap clamps.
They can be installed from 1 to 3 fuses in the wires of the charge circuit of lighting fixtures, as well as to ensure the selectivity of the protection of the power supply network for outdoor lighting fixtures.
The place of connection of charge wires includes:
- terminals;
- tight stuffing box or rubber seal.
EKM boxes 1271 1 D 2 5 16: features of installation
EKM 1271 1 D 2 5 16 and other types of connecting devices made of thermoplastic material, which has shock-resistant properties and is not combustible. All metal parts of the structure are made of tinned copper or stainless steel.
The safety insert is in the ceramic or reinforced fiberglass thermoplastic case. Boxes, depending on the type, may have a degree of protection within IP 43 to IP 54. Boxes with the highest level of protection are often installed outside supports or walls.
Regardless of the type of box have a second class of insulation. According to the EN standard 40-2 they are easily installed inside the support through the doorway, then they are mounted on brackets according to the DIN standard 49778. To make it easier to install the box in the support with cross rails, it is better to order special adapter hooks for them in advance.
Different types of junction boxes differ in the size of the support door, where they will be installed, as well as the number of clamps inside. The diameter of the support of the box is 90 mm, and power cables have a cross section up to 35 square millimeters.
The box is placed in the support, doors which have dimensions 80 on 210 or on 260 mm. There is inside 4 or 5 cap type clamps for two cables, the cross section of which is from 6 to 12 square millimeters, or from 10 to 25 in accordance, in the case of an EKM box 1271 1 D 2 5 16.
Classification of junction boxes for lighting networks
EKM junction boxes for D-size fuses 01 there are such:
- very small cables and supports;
- small;
- medium size;
- medium outdoor cables;
- for use with special equipment.
And for larger fuses of size D 2 such boxes are used, as:
- EKM 1271 1 D 2 5 16 and other EKM 1271 and 1272 - small and medium cables, as well as small supports;
- EKM 1261 1 D 2 5 16 - small cables for outdoor installation;
- cable and support of medium size;
- medium outdoor cables;
- large cables with supports of the EKM series 2035.
EKM can be equipped with such additional fittings:
- adapters;
- fuses;
- fuses;
- caps;
- frames for cable prevention;
- hooks and spare covers.
Technical characteristics of EKM 1271 1 D 2 5 16
Below we will study the technical characteristics of the box of this modification:
- manufacturer - Raychem;
- degree of protection - IP 4;
- the box is intended for installation from within a lighting support;
- the support has a diameter 90 mm;
- the door has parameters 80 on 210 mm;
- fuse D II (E27) to 25 A;
- the cross section of the cables is 4 X (6-16) mm?;
- cap clamp;
- the case is resistant to blows polymeric;
- details are made on the basis of metal with anticorrosive properties;
- transparent cover;
- second class of insulation.
Technical characteristics of the EKM product 1261 1 D 2 5 16
The device of this modification is established from within a lighting support for the purpose of connection of wires of a charge of lighting devices to suitable cables., power supply networks with protective equipment.
The characteristics of the model are as follows:
- the diameter of the support is 100 mm;
- door size 80 on 250 mm;
- to 5 cap clamps for two cables;
- the polymeric case is shock-resistant;
- details on the basis of an anticorrosive metal covering;
- degree of IP protection 54;
- second class of insulation;
- the maximum diameter of the power supply cable is 22 mm;
- diameter without sleeve is 25 mm;
- the diameter of the seal for the charging wires is from 8 to 14 mm.
Advantages of Reichem products
EKM junction boxes are manufactured by Reichem and are different, as well as all products of this brand, good performance in terms of operation. The cable fitting system from this manufacturer can be easily installed even in extreme conditions, in particular, at low temperatures.
Products of this brand are designed and manufactured in accordance with international standards IEC and DIN - VDE, they also passed the appropriate tests.
Reichem EKM devices 1271 1 D 2 5 16 and other models are installed in the lighting pole and help connect the charge wires to the desired cables, they are of high quality and easy to install regardless of environmental conditions.