recommended vfd cable installation guide

RECOMMENDED VFD CABLE INSTALLATION GUIDE

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INTRODUCTION:

Shawcor has developed 600V, 1000V, and 2000V, VFD cable that provides clean power cable for Variable Frequency Drives. Shawcor’s design provides the combination of a dual copper tape, shielded cable with/without interlock armor and a three balanced ground system. All these designs reduce electromagnetic interference (EMI), common mode or ground current, and reflected waves, that make a safe and stable running of both motor and cable, and reduces motor downtime and maintenance. However, without the proper installation of the VFD cable between drive and motor, all the benefits above might not be realized.

This VFD Cable Termination Guide illustrates the step-by-step procedure to terminate an unarmored/armored Shawcor copper-tape shield VFD cable into enclosures or panel boxes.

Unarmored VFD Cable

MotorConnection

U2 V2 W2

X3

MetallicConduit

Heatsink

GND

U1V1

W1

3Motor

PowerConnection

U1 V1 W1

L1

MetallicConduit

X1

L2 L3

L1 L2 L3Power Input

GroundConduit forControl Wires,if used

Armored VFD Cable

USING THIS TERMINATION GUIDE All designs, specifications in the technical or commercial documentation of Shawcor is indicative only. This installation guide is intended for using by appropriately trained persons. Although the information provided in this installation guide is believed to be accurate, Shawcor makes no representations or warranties, expressed or implied, with respect to the accuracy or completeness of this installation guide. This installation guide is not a substitution of the NEC or CEC, please follow the relevant rules in the NEC or CEC in conjunction with this recommended VFD cable installation guide.

SHAWFLEX PRODUCTS shawflex.com

UNARMORED VFD CABLE INSTALLATION GUIDE

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UNARMORED (TRAY) VFD CABLE TERMINATION INSTRUCTIONS

The instructions below apply to both the drive and the motor end of the cable as it pertains to Shawcor’s copper tape shield VFD cables.

MATERIALS REQUIRED

• Proper Personal Protection Equipment (PPE)

• Suitable fittings or cable glands for the enclosure or panel box

• Heat shrink tubing (DSG-Canusa CFW black heavy wall tubing, and green/yellow thin wall tubing CPX-201)

• Electrical tape (DSG-Canusa CET electrical tape)

* Please see the guide for selecting DSG-Canusa CFW, and CPX-201 at the end.*

MAIN INSTALLATION PROCEDURES

1. Measure the length of the cable for jacket removal

2. Remove the outer cable jacket

3. Remove the exposed copper tape shield

4. Twist the exposed three ground wires together

5. Apply heat shrink tubing to the twisted grounds

6. Apply heat shrink tubing over the conductor/ground cable assembly, centered at the strip point of jacket

7. Insert cable into the enclosure through fitting

8. Tighten gland nut, and make sure the fitting is firmly in contact with the jacket

9. Route and trim the conductors, and terminate the ground conductors based on the motor drive manufacturer’s recommendations

10. Terminate the power conductors



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STEPS DIAGRAM


• Insert the cable into the enclosure, and measure the length of cable to reach the termination points, keep the length for trimming once the cable is routed to the termination points.

• Utilize largest possible bending radius possible especially for 90-degree bends.

• Mark the entrance point on the cable in the enclosure with the CET electrical tape


• Strip off the jacket as short as possible based upon the installation parameters.

• Do not cut through the shield when removing the jacket.

* Optional Ripcord can be used for stripping off the jacket


• Untwist and straighten the exposed conductors and ground conductors. Cut off the shield and cable filler

• Do not damage the insulated conductors and ground conductors.

4. Twist the exposed ground conductors together

• Any intermediate termination of the ground or shield should be avoided.

5. Apply heat shrink tubing (DSG-Canusa CPX - 201) to the twisted grounds

• As required, using the HS tubing to keep the three ground wires together if necessary .

6. Apply DSG-Canusa CFW heat shrink tubing over the conductor/ground assembly, centered at the point where jacket removed



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STEPS DIAGRAM


• Insert the cable, and line up to the point where jacket removed to the inner edge of the enclosure.

• Terminate inside the enclosure for maximum shielding effectiveness.

• Non-conductive glands should be used for drives that are in enclosures which contain any analog signals, I/O, PLC’s etc.

8. Tighten gland nut, and make sure the fitting is firmly in contact with the jacket.

9. Route and trim the conductors, and terminate the groundconductors based on the motor drive manufacturer’s recommendations

• Ground wires must be terminated at both the drive and motor (at PE Ground) to provide a low impedance path to ground.

• Grounding conductors must be large enough to carry the current required to trip the over current protection device (Fuse or Breaker)


OTHER RECOMMENDATIONS WHILE WIRING THE GROUND

• Locate drive as close as possible to the motor

• Run cable perpendicular to any communication/signaling cables

• Use Fiber Optic cable if possible for communication near VFD output

• Use of supplemental grounding conductors for noise reduction systems may be needed

• Use only listed devices, exothermic welding, or machine-type screws (2 thread minimum contact) for Equipment Ground Conductor connections

• Do not use equipment for continuity of ground conductor (do not series-connect chassis with jumpers, keep ground conductor with service conductors if possible)

• Use paint piercing hardware when bonding chassis

• Follow connector and fitting manufacturer’s instructions

• Please use these recommendations along with/in conjunction with the VFD’s manufacturer’s installation specs, CEC and NEC

ARMORED VFD CABLE INSTALLATION GUIDE

5


ARMORED (INTERLOCKED) VFD CABLE TERMINATION INSTRUCTIONS

The instructions below apply to both the drive and the motor end of the cable, and pertain to Shawcor copper tape shield interlocked armored VFD cables.

MATERIALS REQUIRED

• Proper Personal Protection Equipment (PPE)

• Suitable metallic fittings or cable glands for the enclosure or panel box

• Heat shrink tubing ( DSG-Canusa CFW black heavy wall tubing, and green/yellow thin wall tubing CPX-100)

• Electrical tape ( DSG-Canusa CET electrical tap)

• Hacksaw (24T), or proper armor stripper

* Please see the guide for selecting the DSG-Canusa CFW, and CPX-201 at the end.*

MAIN INSTALLATION PROCEDURES



3. Remove the interlocked armor

4. Remove the inner jacket


6. Twist the exposed three ground wires together

7. Apply heat shrink tubing to the twisted grounds

8. Apply heat shrink tubing over the conductor/ground assembly, centered at the strip point of jacket


10. Tighten gland nut and make sure the fitting is firmly in contact with the armor

11. Route and trim the conductors, and terminate the ground conductors based on the motor drive manufacturer’s recommendations



6


STEPS DIAGRAM


• Insert the cable into the enclosure, and measure the length of cable to reach the termination points, keep the length for trimming once the cable is routed to the termination points

• Utilize largest possible bending radius possible especially for 90-degree bends

• Mark out the point on the jacket at the entrance of fitting or cable gland. The cable jacket will be stripped off from that point


• Wrap electrical tape around the jacket, and mark the leading edge of the tape to the point previously marked. Remove the outer cable jacket from the point marked.

• Ring cut the jacket along the leading edge of the tape.

• Longitudinally cut from the top end of cable to the leading edge of the tape down to the shield layer, and remove the jacket.

3. Remove interlocked armor

• Mark out the point on the armor at the entrance of enclosure, while lining up the jacket removal point to the entrance of fitting or cable gland.

*Refer to the fitting manufacturers’ recommendation.

• Make a diagonal cut across the armor strip using a hacksaw (24T) at the point previously marked out. The cut should not damage the shield and insulated conductors in the cable core.

• Alternately a CSA/UL approved armor cutting tool can be used

• Gently bend and twist the cracked armor back and forth until the armor is broken

• Slide off the armor.

• Install an anti-short bushing between the armor and the cable core if necessary.


7


STEPS DIAGRAM

4. Remove the inner jacket

• Remove the PVC inner jacket, cut the jacket back to the length of the connector barrel.

• Keep the inner jacket intact as close to the point of the termination as possible.

* Optional Ripcord can be used for stripping off the jacket


• Untwist and straighten conductors and ground conductors. Cut off the shield and cable filler at the point where jacket was removed.

• Do not damage the insulated conductors and ground conductors.

6. Twist the exposed ground conductors together

• Any intermediate termination of the ground or shield should be avoided.

7. Apply heat shrink tubing (DSG-Canusa CPX-201) to the twisted grounds

• As required, use the heat shrink tubing to keep the three ground wires together.

8. Apply heat shrink tubing (DSG-Canusa CFW) over the conductor/grounds assembly, centered at the point where inner jacket removed

• Do not cover the exposed armor with the heat shrink tubing.


• Insert the cable, and line up the point where outer jacket removed to the entrance of the enclosure.

• Use 360-degree termination glands for armor and copper tape shielded cables

• Follow the fitting manufacturers’ instruction.


8


STEPS DIAGRAM

10. Tighten gland nut, and make sure the fitting is firmly in contact with the Armor.

11. Route and trim the conductors, and terminate the ground conductors based on motor drive manufacturer’s recommendations

• Ground wires must be terminated at both the drive and motor (at PE Ground) to provide a low impedance path to ground.

• Grounding conductors must be large enough to carry the current required to trip the over current protective device (Fuse or Breaker)


OTHER RECOMMENDATIONS WHILE WIRING THE GROUND

• Locate drive as close as possible to the motor.

• Run cable perpendicular to any communication/signaling cables.

• Use Fiber Optic cable if possible for communication near VFD output.

• Use of supplemental grounding conductors for noise reduction systems may be needed

• Use only listed devices, exothermic welding, or machine-type screws (2 thread minimum contact) for Equipment Ground Conductor connections

• Do not use equipment for continuity of ground conductor (do not series-connect chassis with jumpers, keep ground conductor with service conductors if possible)

• Use paint piercing hardware when bonding chassis.

• Follow connector and fitting manufacturer’s instructions.

• Please use these recommendations along with/in conjunction with the VFD’s manufacturer’s installation specs, CEC and NEC.


9

DIMENSIONS

ORDERING

Select a dimension which will shrink snugly over the component to be covered. If recovery is restricted the resulting wall thickness will be less than specified. Select Options:

• Color: Black (BK) or Red (RD)• Printing: Printed or Unprinted• Adhesive Lining: Lined (D) or Unlined (U)• Lengths: 6, 9, 12, 24, or 48 inches

Please specify the product name, order number and options you requireExample: CFW, 1500, black, unprinted, unlined, 48 in lengths

Please contact your Customer Service Representative for information on custom colors, sizes, lengths and material data sheet.

ORDER REF NO.Internal Diameter (min) D

EXPANDED

Internal Diameter (max) D

RECOVERED

Wall Thickness (nom) W

RECOVERED

Application Range for General Use

600/ 1000V Single Conductor Size Lengths

mm in mm in mm in mm in AWG/MCH m in

0350 8.9 0.35 3.0 0.12 1.8 0.07 3.5-8 .15-.3 #14-#10 1.2 48

0500 13.0 0.51 4.1 0.16 2.0 0.08 4.5-11 .2-.45 #8-#6 1.2 48

0750 19.1 0.75 6.1 0.24 3.0 0.12 6.5-16.5 .25-.65 #6-#2 1.2 48

1100 27.9 1.10 8.9 0.35 3.0 0.12 10-24 .4-.95 #1-3/0 1.2 48

1500 38.1 1.50 11.9 0.47 3.6 0.14 13-35 .5-1.4 2/0-350 1.2 48

2000 50.8 2.00 16.0 0.63 3.8 0.14 17.5-44 .7-1.75 250-500 1.2 48

2700 68.1 2.70 22.1 0.87 3.8 0.15 24-59 .95-2.3 600-1000 1.2 48

3500 89.9 3.54 30.0 1.18 3.8 0.15 33-80 1.3-3.1 800-1250 1.2 48

4700 119.9 4.72 39.9 1.57 3.8 0.15 44-104 1.75-4.1 1500-2500 1.2 48

5100 129.5 5.10 39.9 1.57 3.8 0.15 43-109 1.7-4.3 1.2 48

6000 152.4 6.00 50.8 2.00 3.8 0.15 56-130 2.2-5.1 1.2 48

6700 170.2 6.70 56.6 2.23 3.8 0.15 61-145 2.4-5.7 1.2 48

HEAVY WALL CROSS LINKED POLYOLEFIN TUBING

CFW


10

ORDER REF NO.Internal Diameter (min) D

EXPANDED

Internal Diameter (max) D

RECOVERED

Wall Thickness (nom) W

RECOVEREDLengths

mm in mm in mm in m in

0125 3.2 1/8 1.0 0.039 0.55 0.022 150 500

0187 4.8 3/16 1.5 0.059 0.60 0.024 60 200

0250 6.4 1/4 2.0 0.079 0.65 0.026 150 500

0375 9.5 3/8 3.0 0.118 0.75 0.030 60 200

0500 12.7 1/2 4.0 0.157 0.75 0.030 60 200

0750 19.0 3/4 6.0 0.236 0.85 0.033 30 100

1000 25.4 1 8.0 0.315 1.00 0.039 30 100

1535 39.0 1.50 13.0 0.512 1.15 0.045 30 100

CPX 201

DIMENSIONS

THIN WALL CROSS LINKED POLYOLEFIN

ORDERING

Select a dimension which will shrink snugly over the component to be covered. If recovery is restricted the resulting wall thickness will be less than specified. Select Options:

• Color: Yellow/green stripes• Printing: Printed or Unprinted• Lengths: Continuous reels

Please specify the product name, order number and options you requireExample: CPX 201, 0250, yellow/green stripes, unprinted, 500 ft lengths

Please contact your Customer Service Representative for information on custom colors, sizes, lengths and material data sheet.

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Head Office25 Bethridge Rd.Toronto, ON M9W 1M7, CanadaTel: +1 416 743 7111

For additional information, please contact:

[email protected] or call toll free: 1 800 668 4842

ShawFlex is registered to ISO 9001:2008

shawflex.com shawcor.com dsgcanusa.com

INTEGRITY DRIVES EVERYTHING WE DO.

Ensure electrical and mechanical reliability with the engineered products and solutions of Shawcor’s Connection Systems Group.

By combining the resources, expertise and technologies of DSG-Canusa and Shawflex, we’re able to offer a complete range of custom cable and advanced cable accessories to simplify installation and to protect your electrical systems.

That’s reliable connectivity and proven asset protection you can count on, and it’s only from the leading integrated energy services company in the world—Shawcor.

September 2017

recommended vfd cable installation guide

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