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Weight & transport of AC Hipot test— which system is easier to carry?

May 27, 2026 Leave a message

Q: I have to carry everything to the test site. Which system breaks into smaller pieces?

 

A: SR wins hands-down. It is modular - each reactor is a separate piece. A test transformer is one big, heavy tank.

 

Weight comparison - 100 kV class:

Item

Test Transformer

Series Resonant System

Main unit

100 kV TX tank: 800–1,500 kg

VFD + exciter: 150–250 kg

Reactors

N/A

3 × HV reactors: 100–200 kg each

Control box

50 kg (built-in sometimes)

Included in the VFD unit

Voltage divider

20 kg

20 kg

Cabling

30 kg

30 kg

Total

900–1,600 kg

500–900 kg

Pieces to carry

1–2 big pieces

5–7 manageable pieces

 

What each piece means at the test site:

Piece

Weight

Who Carries It

VFD unit (wheels)

150–250 kg

Rolls on wheels / small cart

Reactor (each)

100–200 kg

2 people or wheel dolly

Exciter TX

50–80 kg

1–2 people

Voltage divider

20 kg

1 person

Cables

30 kg total

1 person per cable roll

 

Real-world: Test TX on 3rd floor? Spend 2 hours trying to move it. SR system? Two people carry each reactor upstairs in 10 minutes.

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