• HIGH STABILITY
• HIGH ACCURACY
• UNIQUE GUARDED STRUCTURE
• MODULAR DESIGN

Ohm-Labs new HVS High Voltage Standard incorporates innovations based on years of manufacturing and calibrating precision high voltage piders.

As with the former HVA pider, the HVS uses precision matched resistors for high accuracy; it is a modified Park pider structure.

The low resistance section is a 10 K standard. It may be removed for separate calibration, or exchanged with a different standard to provide other ratios. With the low resistance standard removed, the HVS may be used as a high voltage resistor.

An innovative guard structure reduces leakage errors by shielding each resistor at its nominal voltage. The guard structure forms a secondary pider with a separate output to monitor voltage during tests.

The high voltage resistors are enclosed in an acrylic tube, protecting them from dust and contamination. A low voltage fan exhausts heat out the top of the pider.

The base HVS unit includes one 50 megohm stack rated up to 50 kV dc (35 kV ac rms), one 10 K resistance standard and a top toroid. The additional HVS-A adder unit includes one 50 megohm stack and an intermediate toroid. Adder units are easily stacked to increase the range.

The HVS toroids, high voltage sections, base and resistance standard disassemble easily for safe transport. The HVS does not need a special transport container.

ISO17025 accredited calibration is included up to 150 kV dc and up to 100 kV ac (60 Hz rms).

• HVS: 60x60x35 cm (24x24x14 in), 14 kg (30 lbs)
• HVS-A: 50x50x30 cm (20x20x12 in), 8 kg (18 lbs)