3M 2220 Scotch Electrical Stress Control Tape (3/4″ X 5′)

3M™ Scotch 2220 Stress Control Tape changes the voltage distribution in electrical field surrounding medium voltage joints or terminations.

Applications

Lines of flux are regulated to equalize the electrical stresses in a controlled manner along the entire taped joint or termination area where the shielding has been re-moved.

By changing the electrical field surrounding the joint or termination, the stress concentration is reduced from several thousand volts to values found in continuous cable.

The figures below show the stress concentrations around three energized cables. Figures Nos. 1, 2 and 3 show, respectively, the stress concentrations near a cable shield end, a standard tape stress cone, and a joint or termination utilizing Scotch 2220 ‘Stress Control Tape’. The stress concentrations on the insulation surface are directly proportional to the closeness of the equipotential lines.

• Color: Grey
• Thickness: 0.76 mm
• Tensile Strength: >4.3 MPa
• Elongation: >225%
• Dielectric Constant: 25 – 30
• Electric Strength: >13.8 kV/mm
• Range of Temperature:
• Continuous Operating Temperature: 90°C
• Emergency Operating Temperature: 130°C