ALT-300(F)

The ALT-300(F) is a high-voltage DC hipot system delivering up to 300 kV for acceptance, maintenance, and diagnostic testing of high-voltage and extra-high-voltage cables. Built for rugged field use, it features precision voltage regulation, low-ripple DC output, and advanced protection mechanisms. Its modular stack design allows easy transport and assembly at substations, cable tunnels, and overhead transmission corridors. The unit meets IEEE 400 and IEC test requirements for HVDC withstand testing. The ALT-300(F) provides stable DC output for long cable lengths and includes safety interlocks for operator protection. It is widely used by utilities, EPCs, and cable testing contractors.

Key Features

• 300 kV DC output

• Modular stacked HV design

• Precision low-ripple DC generation

• Overcurrent & arc protection

• IEEE/IEC compliant

Applications

• HV/EHV cable commissioning

• HVDC insulation testing

• Transmission system acceptance

Keywords

DC hipot tester, 300 kV DC test, HV cable testing, HVI ALT-300