Function and Application
NXZ series automatic transfer switches are suitable for AC 50Hz/60Hz, rated voltage 400V/415V and below, rated current up to 630A three-phase four-wire dual power supply grid, automatically switching one or several load circuits from one power source to another to ensure normal power supply of the load circuit. This product is suitable for industrial, commercial, high-rise and residential buildings and other power supply places.
Detailed Description
Parameters:
Wiring method: same side incoming line
Usage category: AC-33B
Communication: RS485 function
Advantages/Core Functions:
01 Easy Installation
Standard standby with same side incoming line
Clear layout, line length can be reduced
Whole machine, split type available as desired
02 High Adaptability
High altitude extreme environment shows performance
Extreme cold, scorching heat like home ground
Working temperature range is wider than similar products
-25°C~+75°C easily handled
03 Humanized Design
Product volume reduced by 40%
Small cabinet, ultra-tight space still "free to move"
Isolation lock prevents unexpected closing
Large screen display shows various data; fault information is clearly visible, saving time for after-sales maintenance
04 Smart Networking
Equipped with RS485 communication function, achieving four remote functions
Unmanned, convenient operation and maintenance
Detail Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Electrical Characteristics | Model | NXZ-125 |
| | NXZ-250 |
| | NXZ-630 |
| Frame Current (A) | 125 |
| | 250 |
| | 630 |
| Rated Working Current le (A) | 80, 100, 125 |
| | 160, 200, 250 |
| | 315, 320, 400, 500, 630 |
| Rated Working Voltage Ue(V) | AC400/415V 50Hz/60Hz |
| Rated Insulation Voltage Ui(V) | 800 |
| Rated Impulse Withstand Voltage Uimp(kV) | 8 |
| Usage Category | AC-33B |
| Poles | 3P/4P |
| Rated Limiting Short Circuit Current Iq(kA) | 100 |
| Rated Short Circuit Closing Capacity Icm(kA) | 20 |
| | 30 |
| | 52.5 |
| Rated Short Time Withstand Current Icw/0.2s(kA) | 10 |
| | 10 |
| | 25 |
| Contacts Switching Time (s) | 0.6×(1±50%) |
| | 1×(1±10%) |
| | 1.5×(1±10%) |
| Switching Action Time (s) | 1.2×(1±10%) |
| | 2.1×(1±10%) |
| | 3.3×(1±10%) |
| Mechanical Life (times) | 8500 |
| | 7000 |
| | 3000 |
| Electrical Life (times) | 1500 |
| | 1000 |
| | 1000 |
| Outline Dimensions | Width × Height × Depth (mm)Max | 245×130×126 |
| | 295×175×175 |
| | 430×272×230 |
| Controller Characteristics | Controller Model | A Type (Standard Type), B Type (Intelligent Type) |
| Installation Method | Integral Type, Split Type |
| Rated Control Power Supply Voltage Us | AC230V/240V 50Hz/60Hz |
| Control Voltage Range | 85%Us~110%Us |
