Standard:IEC 60831-1-2014 IEC 60831-2-2014
NO:2021.01
NWC5/NWC6 Series Self-healing Low Voltage Shunt Capacitors
Page 1: ...Standard IEC 60831 1 2014 IEC 60831 2 2014 NO 2021 01 NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors ...
Page 2: ...maintenance 2 Installation in any damp condensed phase environment with inflammable and explosive gas is forbidden 3 When the product is being installed or maintained the power must be switched off 4 You are prohibited from touching the conductive part when the product is operating ...
Page 3: ...ation Commissioning and Operation Main Features Outline and Installation Dimensions Analysis and Troubleshooting of Faults Maintenance and Storage Product Selection and Ordering Information 11 Environmental Protection 01 01 01 02 04 04 06 06 07 08 08 Use Purpose and Application Range Warranty Period Environmental Protection and Law Regulations ...
Page 4: ...mechanical vibration 3 3 Application conditions 3 3 1 The rated voltage of the capacitor must be higher than the voltage of user s grid When the environmental conditions exceed the limits in 3 1 user must derate the capacitor by raising its rated voltage otherwise the service life of the capacitor can be significantly shortened after long term overvoltage or overtemperature operation 3 3 2 Harmoni...
Page 5: ...Rate frequency Hz 50 or 60 Default 50 Capacitance deviation 5 8 Short circuit discharge before test Dissipation factor 30kvar product tanδ 0 0012 30kvar product tanδ 0 0015 Withstand voltage kV Inter pole power frequency 2 15UN 2s Pole to case 2 0 UN 2 kV or 3 kV take higher 5s Maximum allowable overvoltage 1 1UN no more than 8h of continuous operation within 24h Maximum allowable overcurrent 1 3I...
Page 6: ...Figure 3 28 30 Φ136 290 M16 25 Figure 3 0 4 0 45 1 2 T 1 2 Φ60 110 M10 10 Figure 1 3 4 5 T 3 5 Φ60 175 M10 10 Figure 1 6 7 5 8 T 6 8 Φ60 240 M10 10 Figure 1 0 4 0 415 0 45 5 7 5 8 10 15 16 18 20 25 30 40 5 8 Φ76 180 M12 16 Figure 2 10 12 Φ76 240 M12 16 Figure 2 14 16 Φ76 290 M12 16 Figure 2 18 20 Φ86 290 M12 16 Figure 2 22 25 Φ96 290 M16 25 Figure 2 26 30 Φ106 290 M16 25 Figure 3 32 40 Φ116 290 M1...
Page 7: ... maintenance See Figure 1 4 below for outline and installation dimensions Figure 1 Insert type product Figure 2 Cage type product Figure 3 Conducting rod type 3 phase compensation product Figure 4 Conducting rod type split phase compensation product Note Refer to Table 3 based on capacitor model then look for the outline and installation dimensions in Figure 1 Figure 4 Example For model NWC5 0 45 ...
Page 8: ...oltage of phase A phase B and phase C of each group of capacitors 6 5 3 If there is voltage but no current between phases it means the overpressure protector is disconnected user should maintain the product in time or replace it if necessary 6 5 4 Check the surface temperature of capacitor case during operation if the temperature of any individual capacitor case exceeds 65 maintain the product or ...
Page 9: ...mart capacitor or its package directly on the floor 1 The measured current of a newly connected capacitor is much smaller than the rated current on its nameplate same for multiple capacitors If a capacitor with higher rated voltage is connected to 380V grid the actual output current will be much smaller which is normal There is nothing wrong with the capacitor it is just derated User should determ...
Page 10: ...tion of the capacitor which cause self healing breakdown of internal components that generates gases and increases internal pressure When the overpressure protector breaks slight deformation can occur to the capacitor case Use heat dissipation measures to lower the ambient operating temperature of the capacitor Select products with higher rated voltage Harmonic suppression measures are the same as...
Page 11: ...DR J03 NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors IEC 60831 1 2014 IEC 60831 2 2014 08 NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors ...
Page 12: ...NWC5 NWC6 Series Self healing Low Voltage Shunt Capacitors ...
