... effect of testing articles has no influence to it.4. Pernicious polarization charge would make no way to dielectric ... to power standard4. Multi-frequency selections (0.1Hz,0.05Hz,0.02Hz) strengthen the load-bearing capability.Technical parameters:1. Output voltage ... ,60KV,70KV, 80kV,90KV2. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz3. Measurement accuracy: 3%4. Positive and negative voltage peak errors: ≤ ...