Function and Application
NZ5 automatic transfer switch is applicable to three-phase four-wire dual power supply grid with AC 50Hz/60Hz, rated operating voltage AC400V, and rated operating current up to 630A. The product usage category is the highest AC-33A, which can easily cope with various loads; the excitation-type modular design allows conversion speed ≤50ms, greatly improving the continuity of power supply for critical loads; the same-side wiring design makes it more convenient for customers to use; multiple protection methods ensure safe use, and the lock function and mechanism pre-energy storage design make maintenance safer and switching more reliable.
Detailed Description
Parameters:
Frame size: 125/250/400/630
Electrical level: PC
Poles: 2P/3P/4P
Usage category: AC-33A/AC-33iA/AC-33B
Controller type: A type, B type
Installation method: Integral type, Split type
Advantages/Core Functions:
01 Excellent Performance
AC-33A/AC-33iA/AC-33B achieve full coverage of various usage categories and can easily cope with various loads.
It adopts an excitation-type modular design, with a conversion speed ≤50ms, greatly enhancing the continuity of power supply for critical loads.
02 Flexible and Easy to Use
It has a same-side wiring design, and communication interface is optional.
Digital system allows you to be "close at hand", even if you are thousands of miles away, you can operate in real time.
03 Safe and Reliable
It can switch under conditions such as voltage loss, phase failure, over/under voltage, and over/under frequency.
Multiple protection methods make it safer to use.
The lock function makes maintenance safer, and the mechanism pre-energy storage design reduces human influence, making switching more reliable.
Detail Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Product Technical Parameters | Model Specification | NZ5-125, NZ5-250, NZ5-400, NZ5-630 |
| Electrical Level | PC Class |
| Standard | GB/T 14048.11, IEC60947-6-1 |
| Poles | 2P/3P/4P |
| Frame Current (A) | 125, 250, 400, 630 |
| Rated Current (A) | 16/20/25/32/40
50/63/80/100/125, 160/180
200/225/250, 315/350/400, 500/630 |
| Rated Operating Voltage Ue(V) | 2P: AC220/230, 3P/4P: AC380/400, 50/60Hz |
| Rated Insulation Voltage Ui(V) | 800 |
| Rated Withstand Impulse Voltage Uimp(kV) | 8 |
| Usage Category | AC-33B, AC-33iA, AC-33, AC-33B, AC-33iA |
| Make-Break Capacity | 10In, 5 times (AC-33B), 6In, 50 times (AC-33iA), 10In, 50 times (AC-33A) |
| Contacts Working Position | Two-stage / Three-stage |
| Contacts Transfer Time (ms) | ≤ 50 |
| Transfer Action Time (ms) | ≤ 200 |
| Electrical Life (times) | 6000 |
| Controller | A Type / B Type |
| Rated Power Supply Control Voltage Us(V) | AC230 50Hz/60Hz |
| Display Method | LED Digital Screen Display (Integral Type), LCD Liquid Crystal Screen Display (Split Type) |
| Controller Installation Method | Integral Type / Split Type |
| Note | When using in a 60Hz frequency power system, the controller's power system frequency needs to be set. |
