The voltage surge simulator vsurge NX8.1 generates high voltage transients as required by IEC 62052-11 and IEC 60255-27 with a source impedance of 500 Ohm for transient overvoltage tests on Metering equipment. The output voltage ranges up to 8 kV, covering all test levels. The no-load waveshape corresponds to IEC 61180-1. For this kind of testing the standards require a fixed energy of 0.5 J at all test levels.