NP 81 & NP 82 series of Clamp-on Ground Tester has capabilities of measuring out
faults that is beyond the reach reach of traditional methods and can also be
applied in the occasions which are not applicable in traditional methods.
ODTS 60D & 100d Insulation Oil Dielectric Testers are designed
and made to meet customers requirements in accordance
to the IEC156, GB50-86 "The determination method of dielectric strength
of insulation oil".