CWT超小型HF 1.7mm厚电流探头30MHz
概述
1.7mm直径的感应线圈将适合在T0220封装的腿之间
非常薄和灵活的夹式感应线圈
峰值电流额定值从30Apk到6000Apk
灵敏度设置为提供±6伏峰值输出(例如:20.0mV/A(±300A峰值)
驱动50欧姆阻抗的能力
30MHz高频带宽
准确度一般为读数的0.2%
感应线圈长度为80mm
峰值电压隔离1.2kV
CWT Ultramini型号和电流范围
CWTUM/015/B/1/80 = 200mV/A 30A order code CWTUM/015/B/1/80
CWTUM/03/B/1/80 = 100mV/A 60A order code CWTUM/03/B/1/80
CWTUM/06/B/1/80 = 50mV/A 120A order code CWTUM/06/B/1/80
CWTUM/1/B/1/80 = 20mV/A 300A order code CWTUM/1/B/1/80
CWTUM/3/B/1/80 = 10mV/A 600A order code CWTUM/3/B/1/80
CWTUM/6/B/1/80 = 5.0mV/A 1200A order code CWTUM/6/B/1/80
CWTUM/15/B/1/80 = 2.0mV/A 3000A order code CWTUM/15/B/1/8
CWTUM/30/B/1/80 = 1.0mV/A 6000A order code CWTUM/30/B/1/80
Cable length - The cable connecting the measurement coil to the integrator box is 1m
指标
Selection table for CWT Ultra mini current probes
| CWT Ultra Mini specifications | ||||||||
|---|---|---|---|---|---|---|---|---|
| Type | Sensitivity (mV/A) |
Peak current (A) |
Peak di/dt (kA/uS) |
Noise max*1 mV pk-pk |
Droop typ. (%/ ms) |
LF (3dB) bandwidth typ. (Hz) fL |
Phase lead at 1kHz typ. (deg) |
HF (3dB) bandwidth typ. (MHz) fH*2 |
| Coil Length 80mm | ||||||||
| High Sensitivity Ranges of CWT .... measuring currents from 300mA | ||||||||
| CWT015 | 200.0 | 30 | 2.0 | 20 | 80 | 116 | 8.4 | 30 |
| CWT03 | 100.0 | 60 | 4.0 | 20 | 65 | 67 | 4.2 | 30 |
| CWT06 | 50.0 | 120 | 8.0 | 15 | 35 | 34 | 2.1 | 30 |
| CWT1 | 20.0 | 300 | 20.0 | 15 | 9.0 | 9.2 | 0.7 | 30 |
| CWT3 | 10.0 | 600 | 40.0 | 10 | 6.0 | 6.2 | 0.7 | 30 |
| CWT6 | 10.0 | 600 | 40.0 | 10 | 6.0 | 6.2 | 0.7 | 30 |
| CWT15 | 2.0 | 3000 | 70.0 | 5.0 | 2.0 | 2.0 | 0.7 | 30 |
| CWT30 | 1.0 | 6000 | 70.0 | 5.0 | 2.0 | 2.0 | 0.7 | 30 |
| TYPICAL ACCURACY (full scale) |
Calibrated to UKAS ±0.2% with conductor central in the loop Variation with conductor position in the coil loop typically ±2% |
|
| TYPICAL LINEARITY | ±0.05% (full scale) | |
| di/dt ratings Absolute maximum values of di/dt (kA/µs) (value must not be exceeded) |
PEAK 70.0 All models |
PEAK 70.0 1.0kA/uS (1.2kA/uS for CWT1 and above) |
| Coil and cable | |
| COIL CIRCUMFERENCE ‘A’ (mm) | 80mm |
| COIL CROSS SECTION ‘B’ (mm) | 1.7mm |
| PEAK COIL VOLTAGE ISOLATION (kV) | 1200V rating established by a 3kVrms, 50Hz, 60sec flash test |
| Safe peak working voltage to earth. Coils are flash tested at 3kV/60Hz for 60 seconds. Information about the continuous use of coils at high voltage can be obtained from Powertek | |
| TEMPERATURE RANGE (℃) | -40℃ to +125 ℃ (coil) |
| For de-rating due to temperature cycling please consult Powertek | |
| CABLE LENGTH (metre) (from box to coil) | 1m |
| Power input - mechanical - environmental | |
| Power Supply | All CWT units are supplied with four AA batteries (typical life 90 hours) and a 12V-24Vdc input socket and a power adapter to power the CWT from 230Vac or 115Vac. Specify adapter type, 230Vac or 115 Vac |
| 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 will reduce the sensitivity to half its normal value (for driving long cables >10m) |
| TEMPERATURE RANGE (℃) | 0℃ to +40℃ |
| Ordering | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model / sensitivity: CWT Ultra mini unit is supplied with bnc-bnc cable, 12-24Vdc input, 4 AA batteries, power adapter, user manual, calibration certificate and carry case. |
Range | Model | Denotes battery | Cable Length (m) | Coil circumference (mm) | |||
| CWT | UM | 015 | B | 1 | 80 | |||
