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Why use VFD Cables Standard UL?

Because It’s the CODE!

NFPA 79 Chapter 4, Article 4.4.2.8 “Electrical conductors and equipment supplied by power conversion equipment as part of adjustable speed
drive systems and servo drive systems shall be listed flexible motor supply cable marked type RHH, RHW, RHW-2, XHH, XHHW, or XHHW-2” Source: NFPA.org NFPA 79 Ed. 2018 Learn more

 

VFD cables are a critical component in order to extend a motor’s life cycle within a VFD system. Three areas where VFD cables set themselves apart over traditional tray-rated power cables are:

1. Address high and low frequency noise issues with proper shielding
Shielding on cables is what prevents systems from interacting with each other. In short, a cable’s shield is its defense against noise. THHN and most generic control/tray cable are constructed using either an aluminum shield or they are unshielded. HELUKABEL’s VFD cables are constructed using either a foil (100% coverage) + tinned copper braid (85% coverage), or a triple shield comprising of a semi-conductive fleece + foil + braid shield (80% coverage). Cables with the proper shielding prevent the VFD system from radiating electrical noise that can interfere with surrounding networking, instrumentation, wireless communication, and industrial devices.

2. Ability to withstand voltage spikes/reflected wave voltage
A cable combats voltage spikes with insulation material and wall thickness. HELUKABEL’s VFD cables use XLPE insulation as its conductor insulation. XLPE has a much lower capacitance (higher corona inception voltage) than THHN and generic control/tray cable which just use PVC. This is particularly important in wet or damp environments as PVC is more susceptible to absorbing moisture, which results in less than half the insulation capability of XLPE. The wall thickness of a VFD cable tends to be thicker allowing it to withstand voltage spikes significantly better.

3. High temperature resistance
A cable’s type of insulation plays a significant role in how it responds to thermal stress. Thermoset insulation won’t melt or drip in higher temperatures like the thermoplastic insulation found in THHN and generic control/tray cables. If thermoplastic insulation is used, you run the risk that it will melt, drip, or simply deform, which reduces the insulation properties, and can cause damage to critical and expensive equipment/machinery.

  • TOPFLEX® 600 VFD XLPE insulation, EMC-preferred type, flexible motor power supply cable, oil-resistant, NFPA 79 Ch. 4
    UL: TC-ER (1277), WTTC (2277), ITC-ER & PLTC-ER (18-12 AWG), 44 (14-2 AWG), NFPA 79, Class I Div. 2 per NEC Art. 501, NEC Art. 336 & 392, Oil Res I/II, 90°C Dry/Wet, -40°C Cold Bend, SUN RES, DIR BUR CSA: C22.2 No. 230 & 239 – c(UL) CIC-TC FT4, C22.2 No. 210 – AWM I/II A/B FT4
    Insultation: XL-PE Jacket: PVC Learn more

 

  • TOPFLEX® 650 VFD XLPE insulation, EMC-preferred type, flexible motor power supply w/ control conductors, oil-resistant, NFPA 79 Ch. 4
    UL: TC-ER (1277), WTTC (2277), ITC-ER & PLTC-ER (18-12 AWG), 44 (14-2 AWG), NFPA 79, Class I Div. 2 per NEC Art. 501, NEC Art. 336 & 392, Oil Res I/II, 90°C Dry/Wet, -40°C Cold Bend, SUN RES, DIR-BUR CSA: C22.2 No. 230 & 239 – c(UL) CIC-TC FT4, C22.2 No. 210 – AWM I/II A/B FT4
    Insultation: XL-PE Jacket: TPE Learn more

 

  • TOPFLEX® 1000 VFD XLPE insulation, EMC-preferred type, flexible motor power supply cable w/ 3 symmetrical ground conductors, oil-resistant, 90°C Dry/Wet
    UL: TC-ER (1277), WTTC (2277), 44, AWM 21270 (250-500 kcmil) NFPA 79, Oil Res I/II, 90°C Dry/Wet, Class I Div. 2 per
    NEC Art. 501, SUN RES, DIR BUR CSA: C22.2 No. 230 & 239 – c(UL) CIC-TC FT4 (8 – 4/0 AWG), C22.2 No. 210 – AWM I/II A/B FT4
    Insulation: XLPE Jacket: TPE Learn more

 

  • V2K – 2kV VFD 600V/2kV, XLPE insulation, three symmetrical grounds, 90°C dry and 75°C wet
    UL: 44, TC-ER (1277), SUN RES CSA: FT4
    Insulation: XLPE Jacket: PVC
  • TOPSERV® 600 VFD XLPE insulation, EMC-preferred type, highly flexible motor power supply cable, oil-resistant, NFPA 79 Ch. 4
    UL: TC-ER (1277), WTTC (2277), ITC-ER & PLTC-ER (18-12 AWG), 44 (14-2 AWG), NFPA 79, Class I Div. 2 per NEC Art. 501,
    NEC Art. 336 & 392, Oil Res I/II, 90°C Dry/Wet, -40°C Cold Bend, SUN RES, DIR-BUR CSA: C22.2 No. 230 & 239 – c(UL) CIC-TC FT4, C22.2 No. 210 – AWM I/II A/B FT4 Learn more
  • TOPSERV® 650 VFD XLPE insulation, EMC-preferred type, highly flexible motor power supply w/ control conductors, oil-resistant, NFPA 79 Ch. 4
    UL: TC-ER (1277), WTTC (2277), ITC-ER & PLTC-ER (18-12 AWG), 44 (14-2 AWG), NFPA 79, Class I Div. 2 per NEC Art. 501,
    NEC Art. 336 & 392, Oil Res I/II, 90°C Dry/Wet, -40°C Cold Bend, SUN RES, DIR-BUR CSA: C22.2 No. 230 & 239 – c(UL) CIC-TC FT4, C22.2 No. 210 – AWM I/II A/B FT4 Learn more
  • TOPSERV® PVC motor and servo cables for fixed or non-constant movements,0,6/1 kV, according to Siemens 6FX5008, Lenze, Bosch Rexroth
    UL: AWM STYLE 2570 CSA: AWM Learn more
  • TOPSERV® PUR highly flexible motor and servo cable for drag chains, 0,6/1 kV, according to Siemens 6FX8008PLUS, Lenze, Bosch Rexroth
    UL: AWM STYLE 21223 or 20234 CSA: AWM Learn more

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Industrial Cables Motor and Drive Applications

 

 

LuBe ConsultingWhy use VFD Cables Standard UL?

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