Tinsley Model 4720高阻十进制盒设计用于在高达5000V DC的电压下检查和校准绝缘测试仪，可提供长达9年的分辨率。
覆盖的总范围为1kΩ至1,111,111,110kΩ，使用专门选择的电阻器和安装在易于读取的面板上的高质量开关。
这些十年的电阻箱安装在坚固的聚合物便携箱中，带有盖子和提手，为高阻绝缘测试仪的现场和实验室校准提供了理想的解决方案。
仪器可以提供由我们自己的内部校准实验室提供的校准证书。
Designed for the checking and calibration of insulation testers at voltages of up to 5000V DC, the Tinsley Model 4720 high resistance decade boxes provides up to 9 decades of resolution.
The total range covered is from 1 kΩ to 1,111,111,110kΩ using specially selected resistors and high quality switches mounted on an easy to read panel.
These decade resistance boxes are housed in strong polymer portable cases with lids and carrying handles to provide an ideal solution to on-site and laboratory calibration of high resistance insulation testers.
The instruments can be supplied complete with a calibration certificates provided by our own in-house calibration laboratory.
4720 | 值? | 准确性? | 最大功率 | 最大步进电压 | 温度系数 | |||
4720/2 | 1 | 10x1kΩ | ±0.1％ | 1瓦 | 10 | 15ppm/℃ | ||
2 | 10x10kΩ | ±0.1％ | 1瓦 | 50 | 15ppm/℃ | |||
3 | 10x100kΩ | ±0.1％ | 1瓦 | 150 | 15ppm/℃ | |||
4720/3 | 4 | 10 x1MΩ | ±0.1％ | 1瓦 | 300 | 25ppm/℃ | ||
五 | 10x10MΩ | ±0.15％ | 1瓦 | 500 | 50PPM /℃ | |||
6 | 10x100MΩ | ±1.0％ | 2.3Watt | 1000 | 100ppm /℃ | |||
4720/1 | 7 | 10x1GΩ | ±1.0％ | 3.5Watt | 5000 | 100ppm /℃ | ||
8 | 10x10GΩ | ±2.0％ | 3.5Watt | 5000 | 100ppm /℃ | |||
9 | 5x100GΩ* | ±4.0％ | 1.3Watt | 5000 | 2,000ppm /℃ |
| 注： – 数十年，第7期，第8期和第9期限制为最高5000伏。 |
重量8.8千克尺寸47厘米x 37厘米x 18厘米
注意*??此类十年仅针对4720/4型扩展至10x100GΩ
4720 | Value? | Accuracy? | Max. Power | Max. V/Step | Temp. Coeff | |||
4720/2 | 1 | 10 x 1kΩ | ±0.1% | 1Watt | 10 | 15ppm/°C | ||
2 | 10 x10kΩ | ±0.1% | 1Watt | 50 | 15ppm/°C | |||
3 | 10 x100kΩ | ±0.1% | 1Watt | 150 | 15ppm/°C | |||
4720/3 | 4 | 10 x 1MΩ | ±0.1% | 1Watt | 300 | 25ppm/°C | ||
5 | 10 x 10MΩ | ±0.15% | 1Watt | 500 | 50ppm/°C | |||
6 | 10 x 100MΩ | ±1.0% | 2.3Watt | 1,000 | 100ppm/°C | |||
4720/1 | 7 | 10 x 1GΩ | ±1.0% | 3.5Watt | 5,000 | 100ppm/°C | ||
8 | 10 x 10GΩ | ±2.0% | 3.5Watt | 5,000 | 100ppm/°C | |||
9 | 5 x 100GΩ* | ±4.0% | 1.3Watt | 5,000 | 2,000ppm/°C |
| Note:- Decades 6, 7, 8 and 9 limited to a maximum of 5000 volts. |
Weight 8.8kg Dimensions 47cm x 37cm x 18cm
Note *?this decade is extended to 10 x 100GΩ for the type 4720/4 only
A4720-110：提供一对开放式测试引线，配有特殊的高绝缘插头，用于连接十字箱。
A4720-110: A pair of open ended test leads fitted with special high insulation plugs for connection to the decade box are provided.
