ZR-BPYJVP-3 * 25+3 * 4 variable frequency cable

ZR-BPYJVP-3 * 25+3 * 4 variable frequency cable

ZR-BPYJVP ZR-BPYJVP1 ZR-BPYJVP1-2 ZR-BPYJVP3 Details:

ZR-BPYJVP ZR-BPYJVP1 ZR-BPYJVP1-2 ZR-BPYJVP3

serial number
model
name

1
BP-VVP
PVC insulated and sheathed copper wire braided shielded variable frequency power cable

2
BP-VVPP2
PVC insulated and sheathed copper tape wrapped shielded variable frequency power cable

3
BP-VVPPP2
PVC insulated and sheathed copper wire braided copper tape wrapped shielded variable frequency power cable

4
BP-VVP3
PVC insulated and sheathed aluminum polyester composite film wrapped shielding variable frequency power cable

5
BP-YJVP
Cross linked polyethylene insulated copper wire braided total shielding polyvinyl chloride sheathed frequency converter cable

6
BP-YJPVP
Cross linked polyethylene insulated copper wire braided shielded and total shielded polyvinyl chloride sheathed frequency converter cable

7
BP-YJPVP2
Cross linked polyethylene insulated copper wire braided shielded copper tape wrapped and total shielded polyvinyl chloride sheathed frequency converter cable

8
BP-YJVP2
Cross linked polyethylene insulated copper tape wrapped total shielding polyvinyl chloride sheathed frequency converter cable

9
BP-YJP2VP2
Cross linked polyethylene insulated copper tape wrapped with partial shielding and total shielding PVC sheathed frequency converter cable

10
BP-YJP2VP
Cross linked polyethylene insulated copper tape wrapped, sub shielded copper wire braided, total shielded, polyvinyl chloride sheathed, frequency converter cable

11
BP-YJVP2P
Cross linked polyethylene insulated copper tape wrapped and copper wire braided double-layer total shielding PVC sheathed frequency converter cable

12
BP-YJVP3
Cross linked polyethylene insulated polyvinyl chloride sheathed aluminum (aluminum-plastic) composite film wrapped shielding variable frequency power cable

13
BP-YJP3VP
Cross linked polyethylene insulated aluminum (aluminum-plastic) tape (zip) longitudinal wrapping shielded copper wire braided total shielding PVC sheathed frequency converter cable

14
BP-YJP3VP2
Cross linked polyethylene insulated aluminum (aluminum-plastic) tape (tie pattern) longitudinal wrapping shielded copper tape winding total shielding PVC sheathed frequency converter cable

Model and name: Flame retardant cross-linked polyethylene insulated frequency converter cable:

serial number
model
name

1
ZR-BPYJVP
Cross linked polyethylene insulated polyvinyl chloride sheathed copper wire braided shielding flame retardant frequency converter cable

2
ZR-BPYJVP1
Cross linked polyethylene insulated polyvinyl chloride sheathed copper wire wrapped shielding flame-retardant frequency converter cable

3
ZR-BPYJVP1-2
Cross linked polyethylene insulated polyvinyl chloride sheathed copper wire wrapped copper tape wrapped double shielded flame-retardant frequency converter cable

4
ZR-BPYJVP3
Cross linked polyethylene insulated polyvinyl chloride sheathed aluminum (aluminum-plastic) tape shielded flame-retardant frequency converter cable

5
Wdz-bpyjep
Cross linked polyethylene insulated polyolefin sheathed copper wire braided shielding low smoke halogen-free flame retardant frequency converter cable

6
Wdz-bpyjep 2
Cross linked polyethylene insulated polyolefin sheathed copper tape shielded low smoke halogen-free flame-retardant frequency converter cable

7
Wdz-bpyjep 1
Cross linked polyethylene insulated polyolefin sheathed copper wire wrapped shielding low smoke halogen-free flame retardant frequency converter cable

8
Wdz-bpyjep 1 - 2
Cross linked polyethylene insulated polyolefin sheathed copper wire wrapped copper tape double shielded low smoke halogen-free flame-retardant frequency converter cable

9
Wdz-bpyjep 3
Cross linked polyethylene insulated polyolefin sheathed aluminum (aluminum-plastic) tape shielded low smoke halogen-free flame-retardant frequency converter cable

Knowledge of variable frequency cables

In the past two decades, variable frequency speed regulation motors have made great progress both domestically and internationally, with an annual growth rate of slightly over 10%, while DC drive has an annual growth rate

It is 3-4%. Variable frequency motors have many advantages, such as low equipment investment costs, simple structure, small size, low cost, energy saving, and a wide speed range

It has the characteristics of constant power and constant speed, easy to use, large capacity, and so on. Therefore, it is widely used in industries such as metallurgy, mining, and railways, and has also been widely applied in household appliances recently.

Variable frequency speed regulation technology is related to variable frequency motors, variable frequency power supplies, and connecting cables. The length and cross-section of this cable are not very long, and its insulation performance belongs to the category of power cables. Because the actual working frequency is 30-300 Hz, it is often referred to as variable frequency cables. Currently, cross-linked polyethylene is commonly used as the insulation material.

About thirty years ago, the Cable Research Institute developed and produced intermediate frequency cables, which can also be regarded as the predecessor of current variable frequency cables. Its working frequency is 100-400 Hz, and the power supply equipment is an intermediate frequency generator set driven by a DC motor. The output frequency of the generator is adjusted by changing the speed of the DC motor. The waveform of the intermediate frequency voltage can maintain a regular sine wave shape. At that time, the design idea of cables was to reduce line impedance and skin effect, adopt coaxial cables and expand the inner conductor diameter. The application effect of cables in the metallurgical industry was very good.

The current variable frequency power supply uses thyristor components for frequency modulation, which greatly changes the waveform characteristics and brings new problems to motors and cables.

1ZR-BPYJVP-3 * 25+3 * 4 variable frequency cableJob characteristics

1. The influence of pulse voltage on insulation. The frequency regulation range of variable frequency power supply is wide, regardless of the frequency, it has a waveform profile of the main frequency, which contains many high-order harmonics. As a traveling wave, it can be reflected multiple times and the amplitude superposition can reach several times the working voltage. The longer the cable, the higher the amplitude. If the insulation safety factor of the cable is not high, it may be broken down. The oil pump adopts a submersible cable with a length of over 3000 meters, which can operate normally for a long time under power frequency. However, under frequency conversion conditions, the cable only breaks down after a few hours of operation, indicating the harmfulness of pulse overvoltage. Therefore, prevention is necessary. Due to the high voltage resistance level of cross-linked insulated power cables, the cable length is generally within 300 meters, and there have been no breakdown events during operation for many years. However, the insulation thickness and process should be taken seriously. Solid insulation is reliable, while wrapped insulation is not suitable.

2. The cable body emits electromagnetic waves externally. Generally, variable frequency household appliances are single-phase powered, with a short length and low power. When designing, the variable frequency power supply, connecting cables, and variable frequency motor are all set in a metal shell to suppress the emission of electromagnetic waves externally. However, in the industrial field, the motor power is relatively high, and the length of the cable connecting the variable frequency motor and the variable frequency power supply is long. During operation, the cable is an effective carrier for high-frequency electromagnetic waves to be emitted outward. It will cause interference to communication tools or amplitude modulation receivers in the surrounding areas (such as radio amplitude modulation bands), and sometimes the situation is quite serious, which is called electromagnetic wave environmental pollution. Foreign countries have already put forward requirements for this type of cable, and domestic countries also attach great importance to it. Currently, various cable factories have formulated enterprise standards, and in the future, industry standards will be uniformly formulated.