Function and Usage
The CHINT New NHM5 series isolating switch is suitable for AC circuits with a frequency of 50/60Hz, rated voltage AC690V and below, and rated current up to 1000A. The product can be operated under load and is widely used as isolation between the load and power source to ensure personnel safety during equipment maintenance. This product is widely applied in power, construction, petrochemical, metallurgy and other industries' power distribution scenarios.
Detailed Description
Parameters:
Rated insulation voltage: 1000V
Usage category: AC-21A/22A/21B/22B
Frame current: 125A~1000A
Rated voltage: AC380/400/415/660/690
Advantages/Core Functions:
01 Excellent Performance
All series have insulation voltage up to AC1000V
At 5000m altitude, the insulation voltage can still reach 730V
Ensure the product can operate safely in harsh environments such as high altitudes
02 Flexible and Easy to Use
All series meet the requirement of free wiring from top to bottom
Meet different wiring direction requirements
The wiring method is more flexible and adapts to more application scenarios
03 Safe and Reliable
Impact withstand voltage can reach 12kV
Prevent the product from being easily damaged by impact voltage
Ensure the product can be used safely for a long time with reliable operation
Detail Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Product Model | NHM5-100 | 100 |
| NHM5-125 | 125 |
| NHM5-250 | 250 |
| NHM5-400 | 400 |
| NHM5-630 | 630 |
| NHM5-800 | 800 |
| NHM5-1000 | 1000 |
| Rated Operating Current In(A), 40℃ | | |
| Electrical Performance | Rated Insulation Voltage Ui(V) | 1000 |
| Rated Impact Withstand Voltage Uimp(kV) | 8 |
| Rated Operating Voltage Ue(V), AC 50/60Hz | 380/400/415、660/690 |
| Pole Number | 3P |
| | 4P |
| Rated Short-Time Withstand Current IcwAC380/400/415V kA/1s | 1.2 |
| | 1.5 |
| | 3.0 |
| | 5.0 |
| | 7.8 |
| | 9.6 |
| | 12 |
| Rated Short-Circuit Making Capacity Icm(kA) | 1.7 |
| | 2.1 |
| | 4.2 |
| | 7.6 |
| | 13.2 |
| | 16.3 |
| | 24 |
| Compliance Standards | | IEC/EN 60947-3, GB/T 14048.3 |
| Usage Category | | AC-21A/AC+22A; AC-21B/AC+22B |
| Operating Environmental Temperature(℃) | | -35～+70 |
| Isolation Function | | |
| Wiring Method | | Top and Bottom Free Input |
| | Top / Bottom Free Input |
| Arc Distance(mm) | | ≤ 50/ Zero Arc (Requires Installation of Short Terminal Cover TCV) |
| Mechanical Life (Times) | Non-maintenance | 10000 |
| Maintained | 20000 |
| | 40000 |
| | 40000 |
| | 10000 |
| | 10000 |
| | 10000 |
| | 5000 |
| Electrical Life (Times) | AC380/400/415 | 10000 |
| | 10000 |
| | 10000 |
| | 8000 |
| | 8000 |
| | 5000 |
| | 2500 |
| Overall Dimensions (mm) | Width(W)×Height(H)×Depth(D) | 75×130×65 |
| | 92×155×75.5 |
| | 107×165×76.5 |
| | 140×157×111 |
| | 140×157×111 |
| | 182×270×115 |
| | 210×280×118 |
| | 100×130×65 |
| | 122×155×75.5 |
| | 142×165×76.5 |
| | 184×257×111 |
| | 184×257×111 |
| | 240×270×115 |
| | 280×280×118 |
