| Characteristic | Model 1 
 | Model 2 
 | 
        
            | Output voltage, kV | 55 | 
        
            | AC power supply voltage, V | 220 or 380 | 
        
            | Power supply frequency, Hz | 50 | 
        
            | Maximum output power, kVA | 7.5 | 17 | 
        
            | Maximum output current, A 
 | 0.140 
 | 0.32 | 
        
            | Maximum capacitance of an object under the test, pF | 8000 | 20000 | 
        
            | Capacitance of the built-in capacitor, pF 
 | 18-25 | 
        
            | Working excess pressure of insulating gas SF6, MPa 
 | 0.35 | 
        
            | Net weight, kg, max | 68 | 85 |