Rogowski and Current Measurement
World leaders in the design and manufacture of wide-bandwidth current measuring devices based on Rogowski Technology.
PEM has sold its high performance ac current transducers to over 35 countries and can count major international companies, government bodies and research institutions as its customers.
Before PEM's existence, Rogowski transducers were relatively unknown and only used for a few specialist applications. PEM can justly claim to have pioneered the general purpose Rogowski transducer as a readily available wideband commercial product. Since its first range in 1991 PEM has continued to provide state-of-the-art Rogowski transducers across a broad range of applications and provides advice and assistance to engineers with current measurement problems.
PEM remain committed to research into the performance of Rogowski current transducers as well as other novel measurement techniques for electric current, voltage and power.
Why Choose a Rogowski Current Transducer from PEM?
PEM have numerous publications and patents relating to Rogowski technology. This in-depth knowledge enables PEM to provide a high level of technical support for our standard products and to offer our expertise in design and manufacture for custom applications.
PEM’s Rogowski current transducers have many benefits:
| Simple to retro-fit, the clip-around Rogowski coil sensor is thin, lightweight, flexible and robust |
| Coil size is not dependant on the magnitude of the current to be measured: - Coils small enough to fit between the legs of a TO-220 semi-conductor;
- 20m coils to fit round a wind-turbine.
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| Non-Intrusive (presents the equivalent of only a few pH to the circuit under test) |
| Wide-bandwidth devices with predictable frequency response, ideal for power quality measurement or monitoring complex waveforms. |
| Intrinsically safe - No danger of an open circuit secondary. |
| Galvanic isolation |
| Excellent linearity (Rogowski coils have no magnetic materials to saturate) |
| Capable of taking huge overload currents without damage |
| Immune to DC Currents - as a result it can measure small AC currents in the presence of a large DC component |
产品特点 |
- 测量范围:300mA~300,000A,测量精度达2%
- 典型带宽:1Hz~15MHz;
- 纤细、柔软的高性能感应套环:
- 近乎为零的干扰:在测量过程中,实际负载电流仅为几个皮亨;
- 轻而易举地与实际的测量对象相连接;
- 感应套环的峰值电压绝缘能力可达5KV;
- 感应套环周长由100mm~200mm,超出该范围的,可以根据顾客的实际需求定制;
- 瞬时电压输出峰—峰值±6V,可直接与示波器、数据采集器、数字电压表等连接,并做触发输出;
CWT mini电流电子测量感应套环 ,结合拥有灵巧、强大性能的CWT交流电流探头,其特征是通过一个微型的环绕线圈(感应套环)来监测连接非常困难、接头非常微小的电路电流。全新电源 - 允许使用4只标准15VAA碱性电池,可持续工作70小时,附加12—24V直流插座。全新高灵敏高测量范围 – 可测量30A、60A和150A的峰值电流全新自动消除直流偏置 |
实际应用 |
- 监控观测半导体开关的电流波形;
- 电力电子设备的维护和改善;
- 检测限制电流位置;
- 测量故障电流;
- 测量电流脉冲;
- 测量电流的谐波构成
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CWTmini英国PEM电流探头详细资料 |
型:号(CWTmini) | 灵敏度(mV/A) | 峰值 | 最大噪声(mVpk-pk) | 衰减特性(%/ms) | 低频带宽(Hz) | 50Hz时相位超前(deg) | 高频带宽(MHz) | 电流(KA) | di/dt(KA/µs) | 线长100(mm) | 线长200(mm) | 高分辨率测量:>300mA | CWT015 | 200.0 | 0.03 | 0.2 | 6.5 | 130 | 150 | 2.0@6kHz | 5.0 | 3.5 | CWT03 | 100.0 | 0.06 | 0.4 | 4.5 | 90 | 105 | 2.0@4kHz | 8.5 | 5.5 | CWT06 | 50.0 | 0.12 | 0.8 | 3.0 | 70 | 80 | 2.0@3kHz | 17 | 12 | CWT1 | 20.0 | 0.3 | 2.0 | 2.5 | 40 | 50 | 1.9@2kHz | 17 | 12 | CWT3 | 10.0 | 0.6 | 4.0 | 8.0 | 3.0 | 3.5 | 1.0@300Hz | 17 | 12 | 标准精度测量:>15A | CWT6 | 5.0 | 1.2 | 8.0 | 14.0 | 0.9 | 1.0 | 1.7 | 17 | 12 | CWT15 | 2.0 | 3.0 | 20.0 | 7.0 | 0.7 | 0.8 | 1.3 | 17 | 12 | CWT30 | 1.0 | 6.0 | 25.0 | 5.0 | 0.5 | 0.6 | 0.9 | 17 | 12 | CWT60 | 0.5 | 12.0 | 25.0 | 3.5 | 0.35 | 0.4 | 0.6 | 17 | 12 | CWT150 | 0.2 | 30.0 | 25.0 | 3.0 | 0.2 | 0.2 | 0.3 | 17 | 12 | CWT300 | 0.1 | 60.0 | 25.0 | 3.0 | 0.1 | 0.1 | 0.2 | 17 | 12 | CWT600 | 0.05 | 120.0 | 25.0 | 3.0 | 0.06 | 0.05 | 0.1 | 17 | 12 | CWT1500 | 0.02 | 300.0 | 25.0 | 3.0 | 0.035 | 0.03 | 0.06 | 17 | 12 |
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联系方式 |
联系地址:深圳市宝安区48区融景园B座1003室(邮编:518000) 联系电话:0755-29959275 或 153 3879 6951(陈经理) 传真号码:0755-27666172 腾讯QQ:1345620092 |