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Signal cable

Power and signal cable are buried in a common duct. Calculate the electric field distribution and find the mutual capacitance.

Problem Type:
Plane problem of Electrostatics.

Geometry:

signal cable model

Given:
The power cable consists of 4 isolated conductors (A, B, C, 0).
Voltage U = 660 V,
frequency f = 50 Hz.
The signal cable consists of 4 isolated conductors (s1, s2, s3, s4).

Problem:
Determine the mutual capacitance.

Solution:
To calculate self and mutual capacitances of conductors the Capacitance calculator addin is used.

Result:
Electric field strength at phase 60°:

power cable EMC simulation signal cable stress

A

B

C

0

s2

s1

s4

s3

A

2.06e-011

5.76e-011

2.77e-012

5.63e-011

2.31e-014

2.15e-014

7.43e-015

8.01e-015

B

5.76e-011

2.06e-011

5.80e-011

2.75e-012

9.32e-013

1.27e-012

5.25e-013

3.24e-013

C

2.77e-012

5.80e-011

2.06e-011

5.75e-011

5.25e-013

1.24e-012

9.32e-013

3.24e-013

0

5.63e-011

2.75e-012

5.75e-011

2.06e-011

7.44e-015

2.1473e-014

2.3091e-014

8.0139e-015

s2

2.3127e-014

9.3256e-013

5.2505e-013

7.4404e-015

4.3477e-012

1.1255e-011

2.8165e-012

1.1127e-011

s1

2.1491e-014

1.2369e-012

1.2363e-012

2.1473e-014

1.1255e-011

3.1118e-012

1.1245e-011

2.831e-012

s4

7.4345e-015

5.252e-013

9.3176e-013

2.3091e-014

2.8165e-012

1.1245e-011

4.3443e-012

1.1119e-011

s3

8.0111e-015

3.2422e-013

3.2407e-013

8.0139e-015

1.1127e-011

2.831e-012

1.1119e-011

5.4758e-012

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