控件[tem_25_34]渲染出错,Source:未将对象引用设置到对象的实例。
CWT低频宽带电流探头0.01Hz至10MHz
概述
带宽0.01Hz至10mhz(参见各型号带宽规格)
CWT LF模型可扩展LF带宽<1Hz
0.1 ~ 0.2度相移<1Hz
型号涵盖1A - 600,000安培的范围
0.2%的准确率
绝缘性能
可选静电屏
灵活的“夹绕”线圈
±6V瞬时隔离输出，适用于示波器、数据记录仪、PCI DAC卡和功率分析仪
使用4节AA电池或12V ac适配器(110V或230Vac)
包括可追溯的校准证书
CE标志
多种型号的库存
指标
| Application | Application |
| Power analyzers | Convenient method of extending the current, power and harmonic measurement range without bandwidth degradation. Excellent low frequency (0.5Hz) performance along with low phase shift |
| Motor drives and power electronic converters | Allows measurement of IGBT switching times, gate turn on / turn off times and peak current |
| Motors and generator | Easy retrospective installation of probes around conductors where regular clamp and split core CTs are unsuitable |
| Induction heating | Measurement of high current / high frequency signals, including high order harmonic effects |
| Pulsed current applications | Semiconductor switches: IGBT, Power MOSfets, capacitor discharge and circuit breaker interruption currents |
| Capacitor discharge and lightning strike research | Measurement of peak currents without breaking conductors |
Clip On Current Probes Specifications
| CWT Specifications | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Type | Sensitivity (mV/A) |
Peak current (kA) |
Peak di/dt (kA/uS) |
Noise max*1 (mV pk-pk) |
Droop typ. (% / ms) |
LF (3dB) bandwidth typ. (Hz) fL |
Phase lead at 50Hz typ. (deg) |
HF (3dB) bandwidth typ. (MHz) fH *2 |
|
| Coil Length 300mm |
Coil Length 700mm |
||||||||
| Standard Coils | |||||||||
| CWT03LF | 100.0 | 0.06 | 0.4 | 15.0 | 4.6 | 5.1 | 8.3 | 6.5 | 3.0 |
| CWT06LF | 50.0 | 0.12 | 0.8 | 15.0 | 2.3 | 2.6 | 4.2 | 6.5 | 3.0 |
| CWT1LF | 20.0 | 0.3 | 2.0 | 15.0 | 1.0 | 1.0 | 1.8 | 6.5 | 3.0 |
| CWT3LF | 10.0 | 0.6 | 4.0 | 15.0 | 0.5 | 0.55 | 0.85 | 6.5 | 3.0 |
| CWT6LF | 5.0 | 1.2 | 8.0 | 15.0 | 0.25 | 0.27 | 0.45 | 6.5 | 3.0 |
| CWT15LF | 2.0 | 3.0 | 11.0 | 15.0 | 0.1 | 0.11 | 0.18 | 6.5 | 3.0 |
| CWT30LF | 1.0 | 6.0 | 11.0 | 15.0 | 0.05 | 0.055 | 0.09 | 6.5 | 3.0 |
| CWT60LF | 0.5 | 12.0 | 11.0 | 15.0 | 0.025 | 0.022 | 0.045 | 6.5 | 3.0 |
| CWT150LF | 0.2 | 30.0 | 11.0 | 15.0 | 0.01 | 0.011 | 0.018 | 6.5 | 3.0 |
| CWT300LF | 0.1 | 60.0 | 11.0 | 10.0 | 0.007 | 0.008 | 0.012 | 6.5 | 3.0 |
| CWT600LF | 0.05 | 120.0 | 11.0 | 5.0 | 0.007 | 0.008 | 0.012 | 6.5 | 3.0 |
| CWT1500LF | 0.02 | 300.0 | 11.0 | 4.0 | 0.007 | 0.008 | 0.012 | 10.0 | 5.0 |
| Miniature Coils 3.5mm dia and 4.5mm dia | Coil Length 100mm |
Coil Length 200mm |
|||||||
| CWT03LF | 100.0 | 0.06 | 0.4 | 16.0 | 10.2 | 11.0 | 18.6 | 5.0 | 4.0 |
| CWT06LF | 50.0 | 0.12 | 0.8 | 16.0 | 5.1 | 5.6 | 9.3 | 12.0 | 7.5 |
| CWT1LF | 20.0 | 0.3 | 2.0 | 15.0 | 2.2 | 2.3 | 4.0 | 12.0 | 7.5 |
| CWT3LF | 10.0 | 0.6 | 4.0 | 15.0 | 1.0 | 1.1 | 1.7 | 12.0 | 7.5 |
| CWT6LF | 5.0 | 1.2 | 8.0 | 15.0 | 0.5 | 0.55 | 0.85 | 12.0 | 7.5 |
| CWT15LF | 2.0 | 3.0 | 14.0 | 15.0 | 0.2 | 0.22 | 0.35 | 12.0 | 7.5 |
| CWT30LF | 1.0 | 6.0 | 14.0 | 15.0 | 0.1 | 0.11 | 0.18 | 12.0 | 7.5 |
| CWT60LF | 0.5 | 12.0 | 14.0 | 15.0 | 0.05 | 0.055 | 0.09 | 12.0 | 7.5 |
| CWT150LF | 0.2 | 30.0 | 14.0 | 15.0 | 0.02 | 0.022 | 0.035 | 12.0 | 7.5 |
| CWT300LF | 0.1 | 60.0 | 14.0 | 15.0 | 0.01 | 0.011 | 0.018 | 12.0 | 7.5 |
| CWT600LF | 0.05 | 120.0 | 14.0 | 10.0 | 0.007 | 0.008 | 0.012 | 12.0 | 7.5 |
| TYPICAL ACCURACY (full scale) |
Traceable calibration to ±0.2% with condcutor centrail in the lopVariation with conductor position in the coil loop typically ±1% for standard coilsVariation with conductor in position in the coil loop typically ±2% for miniature coils | ||||||
| TYPICAL LINEARITY | ±0.05% (full scale) | ||||||
| ABSOLUTE MAXIMUM VALUES OF di / dt (kA/µs)(value must not be exceeded) |
|
| Coil and Cable | |
| COIL CIRCUMFERENCE ‘A’ (mm) | 300, 500, 700 or 1000mm |
| COIL CROSS SECTION ‘B’ (mm)(dependent on "Peak coil voltage isolation" see below | 8.5 (supplied with 10kV insulation as standard)14.0 (with protection sleeve) |
| PEAK COIL VOLTAGE ISOLATION (kV) | 10 |
| Safe peak working voltage to earth. The coils are flash tested at 15kVrms for 60 seconds. The coil is supplied with a removable silicone sleeve which provides additional mechanical protection. | |
| TEMPERATURE RANGE (°C) | 2.5 or 4 |
| For de-rating due to temperature cycling please consult Powertek | |
| CABLE LENGTH (metre) (from box to coil) | 2.5 or 4 |
| Power input - mechanical - environmental | |
| POWER SUPPLY: | All CWT units are supplied with four AA batteries (typical life 90 hours) and a 12V-24Vdc input socketA Universal Power adapter is included with the CWT probe (accepts 115Vac or 230Vac)Rechargeable batteries and internal charger, option R, is available. (batteries are charged whenever external +12-24V dc supply is present). Typical recharge time 40 hrs, typical life 8 hrs. |
| INTEGRATOR BOX DIMENSIONS (mm) | H =183mm, W = 93mm, D = 32mm |
| OUTPUT SOCKET | BNC (output impedance 50 ohms- unit supplied with 0.5m BNC-BNC coaxial cable) |
| MIN. OUTPUT LOADING | 100kohm (for rated accuracy), 50ohm drive capability optional |
| TEMPERATURE RANGE (°C) | 0°C to +40° |
| Ordering | Model CWT unit is supplied with bnc-bnc cable, 12-24Vdc input, 4 AA batteries, power adapter and user manual, calibration certificate and carry case. |
Cable length (m) | Coil circumference (mm) |
|---|---|---|---|
| e.g. order code = 6kApk, 4 AA Batteries, 12-24Vdc input, ac adapter, 2.5 metre cable, 500mm coil (Coil insulation is 10kV as standard) | CWT30LF B | 2.5 | 500 |
| e.g. order code = 6kApk, 4 AA Batteries, 12-24Vdc input, 230V ac adapter, 4 metre cable, 300mm coil | CWT30LF B | 4 | 300 |
| e.g. order code = 1.2kApk, 4 AA rechargeable batteries, internal battery charger, 12-24Vdc input, ac adapter, 2.5 metre cable, 700mm coil | CWT6LF R | 2.5 | 700 |
