Cable Ampacity, Design Studies & High-Voltage Consulting

Elseng Corp. — underground & submarine power cables

Engineering services

Ampacity (Thermal Rating) Studies
and High-Voltage Consulting

Elseng Corp. supports projects for medium and high voltage underground and submarine cable systems, including finite element ampacity studies and high-voltage diagnostic testing.

Finite element ampacity studies

Contact

elseng at elseng com

+1 289 689 3243
For reliable ampacity/thermal ratings and testing planning, reach out with your requirements.

Project support

Early feasibility → design review → testing planning for underground or submarine cable systems.

Who we are

Elseng Corp. provides engineering services for underground and submarine power cables, covering medium and high voltage systems.

What we do

Ampacity (Thermal Rating) Calculations and Cable Design Consulting

Elseng Corp. conducts detailed ampacity studies using the finite element method, well-suited to complex geometries and interacting thermal and electrical effects in both AC and DC cables. Beside Ampacity additional studies are feasible:

  • Losses in steel components (pipes, rebars, etc.)
  • Electric and magnetic field
  • Sequence impedance calculations
  • Circulating currents and induced voltage

Typical study inputs may include

  • Installation and environmental conditions (e.g., soil/backfill or seawater configurations)
  • Cable construction and material properties
  • Spacing, laying patterns, and surrounding structures
  • Foreign heat sources (e.g., nearby equipment/ducts)

High-voltage testing expertise

Elseng Corp. has extensive experience in high-voltage cable testing, including:

  • High-voltage testing with partial discharge (PD) measurement
  • Tan delta (dissipation factor) measurement
  • Low-voltage tests relevant to evaluating cable condition and performance

These diagnostics help determine insulation condition and potential defects, supporting acceptance testing, commissioning, and lifecycle assessment.

Selected study figures

Visual examples of modeled ampacity and related electromagnetic/thermal effects.

Figure 1: Magnetic field generated by zero-sequence currents in three conductors in a steel pipe
Figure 1: Magnetic field generated by zero-sequence currents in three conductors in a steel pipe
Figure 2: Ampacity of AC and DC cables crossing
Figure 2: Ampacity of AC and DC cables crossing
Figure 3: Ampacity of multiple MV feeders crossing in air
Figure 3: Ampacity of multiple MV feeders crossing in air
Figure 4: Ampacity of cables in a medium deep trough
Figure 4: Ampacity of cables in a medium deep trough
Figure 5: Ampacity of cables in two adjacent deep troughs
Figure 5: Ampacity of cables in two adjacent deep troughs
Figure 6: Ampacity of off-shore cables in a monopile
Figure 6: Ampacity of off-shore cables in a monopile
Figure 7: Ampacity of cables crossing with a steam pipe in a vault
Figure 7: Ampacity of cables crossing with a steam pipe in a vault
Figure 8: Ampacity of cables in a non-ventilated tunnel
Figure 8: Ampacity of cables in a non-ventilated tunnel

Let’s work together

Elseng Corp. supports projects from early feasibility through design review and testing planning. If you need reliable ampacity/thermal ratings, finite element design studies, or high-voltage testing consulting for underground or submarine cable systems, contact Elseng Corp. to discuss your requirements.

elseng at elseng com

Call Elseng