What is the meaning of wire and cable product model, specification and standard number?

What is the meaning of wire and cable product model, specification and standard number?

1. The meaning of the model

The models of wires and cables for electrical equipment and power cables are mainly composed of the following seven parts:

Some special wire and cable models also have derivative codes at the end. The following introduces the meaning of letters in the most commonly used wire and cable models:

1. Type and purpose code

A-Installation wire B-Insulated wire C-Marine cable

K-control cable N-agricultural cable R-flexible wire

U-Mining cable Y-Mobile cable JK-Insulated overhead cable

M-for coal mine

ZR-flame-retardant type NH-fire-resistant type ZA-A flame-retardant

ZB-B flame retardant ZC-C flame retardant WD-low smoke halogen-free type

2. Conductor code

T-copper wire (omitted) L-aluminum core

3. Insulation layer code

V—PVC plastic YJ—XLPE insulation

X—Rubber Y—Polyethylene material

F—Polytetrafluoroethylene

4. Covering code

V-PVC sleeve Y-polyethylene material

N-nylon sheath P-copper wire braided shield P2-copper tape shield

L-cotton yarn weaving wax coated Q-lead bag

5. Feature code

B-flat type R-soft

C-heavy Q-light

G-high voltage H-for electric welding machine

S-twisted pair

6. Code of armor layer

2—Double steel belt 3—Thin round steel wire

4—Thick round steel wire

7. Code of outer protective layer

1—Fiber layer

2—PVC sleeve

3—PE sleeve

2. Examples of the most commonly used wire and cable and power cables for electrical equipment

VV—Copper core PVC insulated and sheathed power cable

VLV—Aluminum core PVC insulated and sheathed power cable

YJV22—Copper core XLPE insulated steel tape armored PVC sheathed power cable

KVV—PVC insulated PVC sheathed control cable

227IEC 01(BV)—abbreviated as BV, general purpose single-core hard conductor non-sheathed cable

227IEC 02(RV)—abbreviated as RV, general-purpose single-core soft conductor non-sheathed cable

227IEC 10(BVV)—abbreviated as BVV, light PVC sheathed cable

227IEC 52(RVV)—RVV for short, light PVC sheathed flexible cord

227IEC 53(RVV)—referred to as RVV, ordinary PVC sheathed flexible cord

BV—Copper core PVC insulated wire

BVR—Copper core PVC insulated flexible cable

BVVB—Copper core PVC insulated and sheathed flat cable

JKLYJ—cross-linked polyethylene insulated aerial cable

YC, YCW—heavy rubber sheathed flexible cable

YZ, YZW—medium-sized rubber sheathed flexible cable

YQ, YQW—light rubber sheathed flexible cable

YH—Electric welding machine cable

3. Cable specifications

The specifications are composed of rated voltage, number of cores and nominal cross section.

The general rated voltages of wires and control cables are 300/300V, 300/500V, 450/750V;

The rated voltage of medium and low voltage power cables are generally 0.6/1kv, 1.8/3kv, 3.6/6kv, 6/6(10)KV, 8.7/10(15)kv, 12/20kv, 18/20(30)kv, 21 /35kv, 26/35kv, etc.

The number of cores of the wire and cable is determined according to actual needs. Generally, power cables mainly have 1, 2, 3, 4, and 5 cores, the wires are mainly 1 to 5 cores, and the control cables have 1 to 61 cores.

The nominal cross section is an approximation of the cross section of the guide body. In order to achieve the specified DC resistance, it is convenient to memorize and uniformly specify an integer value near a conductor cross section. The conductor cross-sections uniformly stipulated in my country are 0.5, 0.75, 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, 800, 1000, 1200, etc. It should be emphasized that the nominal cross-section of the conductor is not the actual cross-section of the conductor. Many actual cross-sections of the conductor are smaller than the nominal cross-section, and several are larger than the nominal cross-section. In the actual production process, as long as the DC resistance of the conductor can meet the specified requirements, it can be said that the cross-section of the cable is up to the standard.

4.Standard number

Most of the wire and cable we produce now have clear standards and regulations in most countries or industries. Of course, the main purpose is to make the design and use uniform.

GB5023-1997 PVC insulated cables with rated voltages of 450/750V and below

JB8734-1998 PVC insulated cables, wires and cords with rated voltages up to and including 450/750V

GB 5013-1997 Rubber insulated cables with rated voltages of 450/750V and below

GB/T12706-2002 Rated voltage 1kV to 35kV extruded insulated power cable and accessories

GB/T 9330-1988 plastic insulated control cable

Guangzhou Zhujiang Cable Co., Ltd. is a wire and cable production and sales enterprise. Over the years, it has won unanimous praise from many cooperative enterprises for its advantages of safety, reliability and environmental protection. The company is strong in technology and research and development, and the project management products carried out include power cables, electrical equipment wires, communication cables, special cables, control cables, computer cables, etc. Welcome customers and friends to visit the factory for inspection and guidance.