CHINT NXZ Series Automatic Transfer Switching Equipment

CHINT NXZ Series Automatic Transfer Switching Equipment,
is designe to ensure reliable dual-power transfer between grid or generator supplies in low-voltage distribution systems.
With rated operational voltage up to 415 V AC and current up to 630 A,
it provides automatic or manual transfer between normal and standby sources.
Built with PC-grade construction, intelligent controllers, and EMC protection,
the NXZ series guarantees continuous operation for industrial, commercial, and residential applications.

• Application: Automatic switching between two power supplies (grid–grid or grid–generator) for continuous power delivery
• Rated Operational Voltage (Ue): AC 400 / 415 V 50 Hz
• Rated Insulation Voltage (Ui): AC 800 V
• Rated Impulse Withstand Voltage (Uimp): 8 kV
• Rated Current Range: 80 A – 630 A
• Frame Currents: 125 A / 250 A / 630 A
• Poles: 3 P / 4 P options
• Utilization Category: AC-33B
• Rated Short-Circuit Making Capacity (Icm): 20 kA–25 kA depending on model
• Rated Conditional Short-Circuit Current (Iq): 100 kA / 50 kA
• Mechanical Endurance: 8 500 – 3 000 operations (depending on size)
• Electrical Endurance: 1 000 – 1 500 operations
• Operating Transfer Time: ≤ 1.2 s
• Contact Transfer Time: ≤ 0.6 s
• Control Voltage Range: 85 % – 110 % of Us
• Controller Supply Voltage: AC 230 / 240 V (50/60 Hz)
• Controller Options: A Type (standard) / B Type (intelligent)
• Transfer Modes:
  • Automatic transfer and restore operation (grid-grid)
  •  non-automatic restore operation (grid-grid)
  •  restore operation (grid-generator)
• Adjustable Delays:
  • Transfer delay: 0 – 300 s
  • Return delay: 0 – 300 s
  • Generator start/stop delay: 0 – 300 s
• Communication: RS-485 (Modbus protocol)
• Display Module: LED for A-type / LCD for B-type controller
• Protection Functions: Overvoltage, undervoltage, phase failure, and fire-control linkage
• Ambient Temperature: −5 °C to +40 °C (−25 °C to +70 °C with temperature compensation)
• Altitude: ≤ 2000 m (derating above this limit)