Equipment, 3*25+ 1* 10 refers to a four-core heavy rubber cable whose grounding wire consists of three 25mm2 cables and one 10mm2 cable.
Extended data:
Meaning and specification of rubber sheathed cable
First, the specifications of the cable.
The meaning of naming mark
Part 1: The capital letter M indicates the serial code of flame retardant cable for coal mine.
The second part: Use the feature code to reflect the environment where the cable is used.
Coding/usage features: C/ used for shearer; D/ low temperature environment; M/ cap lamp line; Y/ mobile coal mining equipment; Used for Z/ electric drill.
Part III: The structural characteristic code represents the structural characteristics of the cable.
Code/structural features: B/ braided steel bar; J/ with monitoring wire core; P/ nonmetal shielding; Platinum/metal shield; Q/ light; R/ winding reinforcement.
The fourth part: the material characteristic code, with the capital letter E, indicates that the insulation and sheath are elastomer, and both insulation and sheath are rubber.
time
Part V: The rated voltage U0/U is expressed in Arabic numerals and the unit is kv.
Part VI: The number of power cord cores and the nominal cross-sectional area are represented by Arabic numerals, and they are connected by "×", and the unit is mm2.
Part VII: Arabic numerals are used to indicate the number of cores and the nominal cross-sectional area of the grounding wire, and the two are connected by "×", and the unit is mm2.
Part VIII: The number of cores and the nominal cross-sectional area of auxiliary lines are represented by Arabic numerals, and they are connected by "×", and the unit is mm2.
The fourth and fifth parts are connected by "-",and the sixth, seventh and eighth parts are connected by "+".
Second, the concept of rubber sheathed cable
As the name implies, it is a kind of wire and cable with equivalent performance based on various rubbers or thermosetting elastomers.
The so-called thermosetting plastic elastomer, that is, after one-time heating molding and curing, its shape is caused by the hinge inside the molecular chain.
When the shape is stable (usually this process is called vulcanization or crosslinking), it can't reach the viscous state again after heating, and then
The full name of YC heavy-duty model is mobile universal heavy-duty rubber-sheathed flexible cable, which is used in various mobile electrical equipment and can bear large mechanical external force.
And can bear its own drag force, the sheath should have high elasticity and mechanical strength, and also have certain flexibility to ensure movement and bending.
Qu.
2. Naming of mine cables (quoted from standard: MT8 18-2009).
The naming of mine cables consists of eight parts.
The first part of the series code is represented by m; The second part uses feature codes; The third part of the structural characteristics of the fourth part of the material characteristic code (after
Plus-); The fifth part of the rated voltage u0/u (kv); The sixth part is the number of moving cores × nominal cross-sectional area; The seventh part of the grounding wire core number x nominal cross-sectional area;
Part 8 auxiliary line number x nominal cross-sectional area.