NRM series high-voltage probes are used in the development and testing of DC high-voltage power supplies, X-ray power supplies, electrostatic precipitator power supplies, medical power supplies, CT or PECT drive power supplies or various pulse high-voltage power supplies. This high-voltage probe not only can meet the most demanding space electric field interference environment, but it can also be used under special temperature and environment. It has been tested and approved by many universities and laboratories in China. Some users of this series of high-voltage probes include the Strong Magnetic Field Center of Huazhong University of Science and Technology, North China Electric Power University, Wuhan University of Technology, Schneider Electric (China) Co., Ltd., Southwest Institute of Physics for Nuclear Industry and other units.
Overview
Product characteristics
1. Standard BNC interface compatible with oscilloscopes produced by Tektronix Keysight and other manufacturers.
2. The NRM series of high-voltage probes use resistors and capacitors with small size and high bandwidth.
3. The NRM series high voltage probe adopts symmetrical full shielding measures to reduce the proximity effect (stray capacitance) while ensuring the consistency and stability of the test to the greatest extent.
4. The high-frequency and low-frequency of the NRM series high-voltage probes have been strictly calibrated and even the high-frequency coaxial cable has undergone frequency compensation to ensure accurate measurement of each frequency band.
5. The NRM series high-voltage probes are specially compensated and no additional calibration is required when using oscilloscopes from different manufacturers.
Models
| Item | NRM-1 | NRM-2 | NRM-3 | NRM-4 | NRM-5 | NRM-6 | NRM-7 | NRM-100 | NRM-11 | NRM-12 |
| DC/Pulse voltage (kV) | 40/60 | 40/60 | 40/60 | 40/60 | 60/100 | 60/100 | 60/100 | 100/150 | 10/12 | 25/32 |
| Bandwidth (MHz) | 90 | 90 | 25 | 120 | 80 | 80 | 120 | 90 | 30 | 50 |
| Cable Impedance (Ω) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| DC Accuracy for 2Hz | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% | ＜0.15% |
| 2Hz-200Hz Accuracy | ＜1% | ＜1% | ＜2% | ＜1.5% | ＜1% | ＜1% | ＜1.5% | ＜1.5% | ＜1.5% | ＜1.5% |
| 200Hz-5MHz Accuracy | ＜1.5% | ＜1.5% | ＜3% | ＜2% | ＜1.5% | ＜1.5% | ＜2% | ＜2% | ＜2% | ＜2% |
| >5MHz Accuracy | ＜4% | ＜6% | ＜4% | ＜5% | ＜4% | ＜6% | ＜4% | ＜6% | ＜4% | ＜4% |
|
Input R/C (M Ω/pF) |
400/13 | 400/13 | 400/10 | 400/8 | 400/12 | 400/12 | 400/8 | 600/15 | 100（50）/15 | 300/7 |
| Length of cable (m) | 4.5 | 9 | 30 | 4.5 | 4.5 | 9 | 4.5 | 4.5 | 4.5 | 4.5 |
| Standard voltage ratio | 1000:1 | 1000:1 | 10000:1 | 1000:1 | 1000:1 | 1000:1 | 1000:1 | 2000:1 | 1000:1/100:1 | 1000:1 |
|
Length (cm) |
47 | 47 | 47 | 47 | 47 | 47 | 47 | 57 | 18 | 23 |
