Manufacturer of Frequency Conversion Cables
Variable-frequency cables are mainly used for connecting cables between variable-frequency power supplies and variable-frequency motors. The structure of the frequency conversion cable includes three main insulated wires and three neutral insulated wires. The main line insulation and the neutral line insulation are sequentially arranged with an inner winding layer, a copper tape layer, an outer winding layer and an outer sheath layer to form a 3+3 core structure. The cable has strong resistance to voltage shock, can withstand the pulse voltage of high-speed and frequent frequency conversion, and has a good protective effect on frequency conversion electrical appliances. Power transmission in electrical circuits with rated voltages of 1KV and below. It is suitable for papermaking, metallurgy, metal processing, mining, railway and food processing industries.
2. The long-term allowable maximum temperature of the cable conductor is 90°C, and the maximum temperature when short-circuited is 250°C
3. The ambient temperature for installation and laying is not lower than 0°C, and the ambient temperature for fixed laying is not lower than -10°C
4. The minimum allowable bending radius of the cable is not less than 15D (D-cable outer diameter, mm)
1. BPYJVP12R-TK, ZRBPYJVP12R-TK type design adopts category 5 soft stranded copper conductors in accordance with GB/T3956-1997.
2. Cross-linked polyethylene insulation, good temperature and weather resistance.
3. Low transmission impedance and good electromagnetic compatibility.
4. Low working capacitance.
5. Good anti-interference and low radiation performance.
6. The symmetrical three-core cable structure design has better transmission performance than the four-core cable.
ZRBPYJVTP2-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, bobinado de alambre de cobre, blindaje envuelto en cinta de cobre, cable de bucle para convertidor de frecuencia.
BPYJVP12-TK: Aislamiento de polietileno reticulado con núcleo de cobre, funda de PVC, envoltura de cinta de cobre, doble blindaje trenzado de alambre de cobre, cable de bucle para convertidor de frecuencia.
ZRBPYJVP12-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, envoltura de cinta de cobre, doble blindaje trenzado de alambre de cobre, cable de bucle para convertidor de frecuencia.
BPYJVPX12R-TK: Aislamiento de polietileno reticulado con núcleo de cobre, funda de PVC, envoltura de cinta de cobre, doble blindaje de trenza de alambre de cobre estañado, cable de bucle para convertidor de frecuencia.
ZRBPYJVPX12R-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, envoltura de cinta de cobre, doble blindaje de trenza de alambre de cobre estañado, cable de bucle para convertidor de frecuencia.
Model, number of cores, nominal section (MM)
BPYJVTP2-TK, 3 1.5~240
ZRBPYJVTP2-TK, 3 1.5~240
BPYJVP12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
BPYJVPX12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
ZRBPYJVP12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
ZRBPYJVPX12-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
Note: In addition, the frequency conversion cable with armored structure can be provided according to the needs of users.
Series code BP frequency conversion cable
Insulation code: YJ XLPE insulation
Sheath code: V PVC sheath
Sheath code: E Halogen-free low-smoke polyolefin sheath
Shielding code: TP2 concentric conductor + copper tape shielding structure
Shield code: P12 copper tape shield + copper wire braided double shield
Shield code: PX12 copper tape shield + braided double shield of tinned copper wire
Armored code: 22 steel tape armored
Flame retardant code: ZR flame retardant
For the special cables for frequency conversion motors of 1.8/3KW and below, and the symmetrical 3+1 core and 4-core cables can only be used for the input cable of the main power supply, it is best to use a symmetrical structure cable. The cables between the frequency converter and the frequency conversion motor need to adopt a symmetrical cable structure. There are two types of symmetrical cable structures: 3 cores and 3+3 cores. The 3+3 core cable structure is to decompose the fourth core (neutral core) of the three large and one small four core insulated cores into three small cross-section insulated cores, and the three three small cores are symmetrically formed into a cable . For 6/10kV variable frequency motor special cables, the cable structure is different from 6/10kV ordinary power cables. Ordinary power cables use copper tape to shield the three insulated cores and form a cable, while the frequency conversion motor special cable is shielded by copper wire and copper tape, and then squeezed into a separate phase sheath, and then symmetrically formed into a cable. The symmetrical cable structure has better electromagnetic compatibility due to the interchangeability of the wires, and plays a certain role in suppressing electromagnetic interference. It can offset the odd frequencies in the high-order harmonics, improve the anti-interference of the frequency conversion motor special cable, and reduce the electromagnetic radiation in the entire system.
2. Shielding structure design
The shielding of the special cables for frequency conversion motors of 1.8/3kV and below generally adopts the general shielding. The special cable shielding for 6/10kv variable frequency motor consists of phase shielding and total shielding. The split-phase shielding can generally be shielded by copper tape or copper wire and copper tape combination shielding. The overall shielding structure can use copper wire and copper tape combined shield, copper wire braided shield, copper tape shield, copper wire braided copper tape shield, etc. The cross-section of the shielding layer is proportional to the cross-section of the main core. The shielded cable of this structure can resist electromagnetic induction, poor grounding and power line conduction interference, reduce inductance, and prevent excessive induced electromotive force. The shielding layer not only plays a role in suppressing the external emission of electromagnetic waves, but also serves as a channel for short-circuit currents and can protect the neutral core.
Después del proceso de extrusión del núcleo aislado, la calidad del núcleo aislado afectará directamente el rendimiento eléctrico del cable. Para mejorar la calidad del cable, elegimos materiales aislantes de alto rendimiento eléctrico. Por ejemplo: el cable especial del motor de conversión de frecuencia de 1.8 / 3kv utiliza material aislante reticulado de 10kV; el cable especial del motor de conversión de frecuencia de 6 / 10kv utiliza material aislante reticulado de 35kv. Los materiales importados se utilizan para blindaje de conductores, blindaje de aislamiento y materiales de aislamiento. En el proceso de producción, prestamos especial atención a la purificación de las materias primas, apretando firmemente los materiales de blindaje y aislamiento, y controlamos la excentricidad del aislamiento y la uniformidad del diámetro exterior del aislamiento. Esto puede reducir el efecto de interfaz y mejorar el rendimiento eléctrico del cable.
Los cables de conversión de frecuencia requieren una estructura simétrica. Al formar un cable, es necesario asegurarse de que la tensión del núcleo aislado sea uniforme, de modo que la longitud del núcleo después del cable sea lo más uniforme posible. De lo contrario, provocará cambios estructurales, lo que provocará una falta de homogeneidad de capacitancia e inductancia y afectará el rendimiento eléctrico del cable.
Conditions of Use
1. Rated voltage U0/U: 0.6/1KV2. The long-term allowable maximum temperature of the cable conductor is 90°C, and the maximum temperature when short-circuited is 250°C
3. The ambient temperature for installation and laying is not lower than 0°C, and the ambient temperature for fixed laying is not lower than -10°C
4. The minimum allowable bending radius of the cable is not less than 15D (D-cable outer diameter, mm)
performance
1. BPYJVP12R-TK, ZRBPYJVP12R-TK type design adopts category 5 soft stranded copper conductors in accordance with GB/T3956-1997.2. Cross-linked polyethylene insulation, good temperature and weather resistance.
3. Low transmission impedance and good electromagnetic compatibility.
4. Low working capacitance.
5. Good anti-interference and low radiation performance.
6. The symmetrical three-core cable structure design has better transmission performance than the four-core cable.
Modelo y uso detallados
BPYJVTP2-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC, devanado de alambre de cobre, blindaje de devanado de cinta de cobre, cable de bucle para convertidor de frecuencia.ZRBPYJVTP2-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, bobinado de alambre de cobre, blindaje envuelto en cinta de cobre, cable de bucle para convertidor de frecuencia.
BPYJVP12-TK: Aislamiento de polietileno reticulado con núcleo de cobre, funda de PVC, envoltura de cinta de cobre, doble blindaje trenzado de alambre de cobre, cable de bucle para convertidor de frecuencia.
ZRBPYJVP12-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, envoltura de cinta de cobre, doble blindaje trenzado de alambre de cobre, cable de bucle para convertidor de frecuencia.
BPYJVPX12R-TK: Aislamiento de polietileno reticulado con núcleo de cobre, funda de PVC, envoltura de cinta de cobre, doble blindaje de trenza de alambre de cobre estañado, cable de bucle para convertidor de frecuencia.
ZRBPYJVPX12R-TK: Aislamiento de polietileno reticulado con núcleo de cobre, cubierta de PVC retardante de llama, envoltura de cinta de cobre, doble blindaje de trenza de alambre de cobre estañado, cable de bucle para convertidor de frecuencia.
Specification range
Model, number of cores, nominal section (MM)BPYJVTP2-TK, 3 1.5~240
ZRBPYJVTP2-TK, 3 1.5~240
BPYJVP12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
BPYJVPX12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
ZRBPYJVP12R-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
ZRBPYJVPX12-TK, 3+3 main core section: 2.5-240, secondary core section: 0.5-35
Note: In addition, the frequency conversion cable with armored structure can be provided according to the needs of users.
Model Description
Item Code DescriptionSeries code BP frequency conversion cable
Insulation code: YJ XLPE insulation
Sheath code: V PVC sheath
Sheath code: E Halogen-free low-smoke polyolefin sheath
Shielding code: TP2 concentric conductor + copper tape shielding structure
Shield code: P12 copper tape shield + copper wire braided double shield
Shield code: PX12 copper tape shield + braided double shield of tinned copper wire
Armored code: 22 steel tape armored
Flame retardant code: ZR flame retardant
Structural design
1. Design of cable symmetryFor the special cables for frequency conversion motors of 1.8/3KW and below, and the symmetrical 3+1 core and 4-core cables can only be used for the input cable of the main power supply, it is best to use a symmetrical structure cable. The cables between the frequency converter and the frequency conversion motor need to adopt a symmetrical cable structure. There are two types of symmetrical cable structures: 3 cores and 3+3 cores. The 3+3 core cable structure is to decompose the fourth core (neutral core) of the three large and one small four core insulated cores into three small cross-section insulated cores, and the three three small cores are symmetrically formed into a cable . For 6/10kV variable frequency motor special cables, the cable structure is different from 6/10kV ordinary power cables. Ordinary power cables use copper tape to shield the three insulated cores and form a cable, while the frequency conversion motor special cable is shielded by copper wire and copper tape, and then squeezed into a separate phase sheath, and then symmetrically formed into a cable. The symmetrical cable structure has better electromagnetic compatibility due to the interchangeability of the wires, and plays a certain role in suppressing electromagnetic interference. It can offset the odd frequencies in the high-order harmonics, improve the anti-interference of the frequency conversion motor special cable, and reduce the electromagnetic radiation in the entire system.
2. Shielding structure design
The shielding of the special cables for frequency conversion motors of 1.8/3kV and below generally adopts the general shielding. The special cable shielding for 6/10kv variable frequency motor consists of phase shielding and total shielding. The split-phase shielding can generally be shielded by copper tape or copper wire and copper tape combination shielding. The overall shielding structure can use copper wire and copper tape combined shield, copper wire braided shield, copper tape shield, copper wire braided copper tape shield, etc. The cross-section of the shielding layer is proportional to the cross-section of the main core. The shielded cable of this structure can resist electromagnetic induction, poor grounding and power line conduction interference, reduce inductance, and prevent excessive induced electromotive force. The shielding layer not only plays a role in suppressing the external emission of electromagnetic waves, but also serves as a channel for short-circuit currents and can protect the neutral core.
Requisitos de proceso
En el proceso de producción de cables especiales para motores de conversión de frecuencia, el proceso de extrusión del núcleo aislado y formación del cable es el proceso más crítico.Después del proceso de extrusión del núcleo aislado, la calidad del núcleo aislado afectará directamente el rendimiento eléctrico del cable. Para mejorar la calidad del cable, elegimos materiales aislantes de alto rendimiento eléctrico. Por ejemplo: el cable especial del motor de conversión de frecuencia de 1.8 / 3kv utiliza material aislante reticulado de 10kV; el cable especial del motor de conversión de frecuencia de 6 / 10kv utiliza material aislante reticulado de 35kv. Los materiales importados se utilizan para blindaje de conductores, blindaje de aislamiento y materiales de aislamiento. En el proceso de producción, prestamos especial atención a la purificación de las materias primas, apretando firmemente los materiales de blindaje y aislamiento, y controlamos la excentricidad del aislamiento y la uniformidad del diámetro exterior del aislamiento. Esto puede reducir el efecto de interfaz y mejorar el rendimiento eléctrico del cable.
Los cables de conversión de frecuencia requieren una estructura simétrica. Al formar un cable, es necesario asegurarse de que la tensión del núcleo aislado sea uniforme, de modo que la longitud del núcleo después del cable sea lo más uniforme posible. De lo contrario, provocará cambios estructurales, lo que provocará una falta de homogeneidad de capacitancia e inductancia y afectará el rendimiento eléctrico del cable.
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