Product description

1.1. Cabling 

The adjacent layers are wired in opposite directions with the last one to the right (if the beneficiary does not specify another way).

The wiring ratios must not be higher in the upper layers than in the ones immediately below them.

1.2. Welds

No welds are made on the steel wires that make up the heart

Welds are allowed on aluminum wires depending on the requirements of each standard (e.g. in IEC 61089 n+1 welds can be made on aluminum wires, where n represents the number of layers of aluminum in the conductor)

The mechanical strength of the welded wires must be at least 75 MPa (N/mm²)

 1.3. The densities of the materials used at 20⁰C

 1.4. The maximum electrical resistivities of the materials at 20⁰C:

 1.5. Conductor mass

The mass of the conductors is calculated according to the wiring ratio (in the tables the masses calculated with an average wiring ratio are given)

1.6. Breaking strength of conductors

The nominal breaking strength of homogeneous conductors (from a single type of aluminum, alloy, steel material) is equal to the sum of the minimum breaking forces of each wire. The breaking force of bimetallic conductors is equal to the sum of the minimum forces of aluminum wires to which is added the breaking force of 1% of steel or alloy wires. The total breaking strength is min. 95% of the calculated breaking strength

Steel traction cables are obtained by wrapping (twisting) or braiding wire drawn from steels with medium and high carbon content. By wrapping the wires in helical turns, cables with a round section are made. The winding of wires in strands and strands in cables can be done to the right (type Z) or to the left (type S).

2.1. Simple cables

Simple cables are also known as spiral cables (1×7, 1×19, 1×37, 1×61)

2.1. Composite cables

Composite cables are divided into two groups: double, formed by wrapping several strands and triple, formed by wrapping several double cables around the heart.

2.2. For composite cables, the following types of cables are distinguished:

2.2.1. Parallel wiring:

In parallel wiring, the winding direction of the strands around the core is the same as the winding direction of the wires in the outer layer of the strands (Z/Z or S/S)

2.2.2. Cross wiring

When wiring in a cross, the winding direction of the strands around the core is opposite to that of the wires in the outer layer of the strands (S/Z and Z/S)

2.2.3. Mixed or combined wiring

Combined wiring is the one in which right-hand winding strands alternate with left-hand winding strands (SZ/Z or ZS/S)

In current manufacturing, wiring is done in a right cross (S/Z)

2.3. Classification of steel cables:

Classification is usually done according to the following criteria:

1 according to the surface of the wire: galvanized or matt cables

2 according to the cross-section of the cable: round cables or flat cables

3 according to the construction method: simple cables and compound cables

4 according to the field of use: extraction, traction, carrier, anchoring cables, for lifting installations, for elevators, special cables

In this catalog you will find:

Simple cables 1 x 7, 1 x 19, 1 x 37,1 x 61

Double compound cables, normal construction: 6 x 7, 6 x 19, 6 x 37

Combined construction: 6 x 19 Seale and 6 x 36 Warrington-Seale

Concentric construction: anti-rotators 18 x 7

2.4. Field of use of traction cables

 At the request of the beneficiaries, other types of traction cables can be made.

3.1.1. Type tests

The type tests are intended to verify the main characteristics of a conductor, characteristics that depend on its component. They are performed only once, either for a new design or for a new conductor manufacturing process, so they are only repeated in case of a change in the component or the manufacturing process. Iproeb performs the following type tests: aluminum wire welds, stress-strain curves (stress-strain, creep), conductor breaking strength.

3.1.2. Batch tests (per sample)

1. a) on wires before wiring, according to standards
2. b) on the conductor, tests regarding the surface of the cross section, the outer diameter, the linear density, the appearance of the surface, the wiring ratio and the direction of the wiring.

3.1.3. The diameter of the conductors

The nominal diameter tolerance must be ±1% for conductors with a diameter greater than or equal to 10 mm, ±0.1 mm for conductors with a diameter smaller than 10 mm

3.1.4. Mass per unit length it must not exceed by more than ±2% the nominal value given in the tables.

3.1.5. Greasing

Usually only the galvanized steel wires (core) are greased with aluminum steel conductors, but a different grease can be made at the request of the beneficiary.

3.1.6. Packaging

The conductors are delivered on wooden cable drums that adequately protect against damage that may occur during transport and during handling. The type, size of the packaging and method of packaging, as well as the requirements regarding the size of the packaged product, the hole of the drum axis and the drive hole are the subject of the agreement between the beneficiary and Iproeb.

Information that must be provided by the buyer in a bid request

1. a) quantity
2. b) the cross section, marking and wiring method of the conductor
3. c) the length of the conductor on the drum, tolerance, if necessary, the grouping of conductors by length
4. d) type and size of packaging and packaging method
5. e) special packaging prescriptions, if necessary
6. f) prescriptions for the protective sheath made of planks or lamiflex if necessary
7. g) if control is requested - the place of control
8. h) if tests of the wires are required after wiring (in addition to the requirements of the standard)
9. i) if breaking tests on the conductor are required
10. j) the wiring direction if it is not according to the standard
11. k) if type tests are required
12. l) prescriptions regarding greasing, if necessary

In addition to the significant position it occupies on the Romanian market, IPROEB stands out for the diversity of countries in which it exported an important part of its production: Hungary, Poland, Slovakia, Slovenia, Austria, Moldova, Albania, Turkey, Bulgaria, Ukraine, China , Sudan, Egypt, Iraq, Germany, Israel and Nigeria.