Accuracy class Ts430/1: - when measuring direct voltage - 4.0; - when measuring alternating current and resistance - 2.5. Internal resistance when measuring voltage is 8 kOhm/V. Working position is horizontal. Tolerance - ±2%. The change in instrument readings when their operating position deviates from horizontal by 10° in any direction does not exceed the permissible error.
Changes in the readings of the Ts430/1 testers caused by a change in frequency from the boundaries of the nominal areas to any values in extended frequency areas when measuring alternating current and voltage, the relative level of alternating voltage, do not exceed the permissible values of the main errors. The measurement error caused by the deviation of the shape of the current or voltage curve from practically sinusoidal under the influence of the second, third or fifth harmonic components, equal to 5% of the effective value of the measured current or voltage, does not exceed the value of the main error.
The insulation of devices between all isolated electrical circuits and the housing of devices at normal temperatures and humidity can withstand a test voltage of almost sinusoidal shape and a frequency of 50 Hz for 1 minute. Overall dimensions - 128×88×50 mm. Weight of Ts430/1 - no more than 0.45 kg. Operating conditions Ts430/1: Air temperature - from +15° C to +25° C. Relative humidity - 80%. The voltage waveform is sinusoidal.