功能亮点
功率分析仪 7140
— 超高量测精度±0.05%
— 100 阶谐波分析( 数值显示/ 柱状图分析)
— 高速500kSPS 取样率
— 额定直接输入电压800V/ 输入电流30A
— DC, 0.2Hz~100kHz 量测频宽
— 4.3 吋彩色多功能数字及图形LCD 显示
— 三大图形显示( 波形图/ 趋势图/ 柱状图)
— 自动积分长达1 万小时/ 自动积分下同时可进行谐波分析
— 最小电流档位5mA 与10μW 的功率解析度
— 支援比较模式设定上/ 下限值进行PASS/FAIL 判断
— 自动切换小电流/ 大电流量测模式( 省去人工接线)
— AC+DC 同时量测、同时显示
— 支援外部电流传感输入( 大电流测试方案)
Selection
| Model | 7140 Powar Analyzer | 7130 Power Meter |
| Frequency Range | D C , 0 . 2H z~10 0 k H z | D C , 0 . 2H z~10 0 k H z |
| Basic Measurement Accuracy | ±0 . 0 5 % | ±0 . 0 5 % |
| Sampling Rate | 5 0 0 k SP S | 5 0 0 k SP S |
| Meter Mode | ● | ● |
| Harmonic Analysis | 100th-order harmonic | 50th-order harmonic |
| Voltage and Current Waveform Display | ● | ● |
| Power Trend Graph | ● | — |
| Harmonic Bar Char t | ● | — |
Extensive Parameter Measurement
| Voltage (VRMS/ VDC/ V+PK/ V-PK) | Apparent Power（S） |
| Current (IRMS/ IDC/ I+PK/ I-PK) | Reactive Power ( Q ) |
| Frequency (VHZ/ IHZ) | Phase Angle (DEG) |
| Power（P） | Total Harmonic Distortion (THDV/ THDI/ THDW) |
| Crest Factor (CFV/ CFI) | Maximum Current Ratio (MCR) |
| Power Factor（PF） | Displacement Power Factor (DPF) |
Input
| Input | |||
| Measurement range | Voltage | Crest factor 3: 15V/ 30V/ 60V/ 150V/ 300V/ 600V | |
| Crest factor 6: 7.5V/ 15V/ 30V/ 75V/ 150V/ 300V | |||
| Current: Direct input | Crest factor 3: 5mA/10mA/20mA/50mA/100mA/200mA/0.5A/1A/2A/5A/10A/20A(Max30A) Crest factor 6: 2.5mA/5mA/10mA/25mA/50mA/100mA/0.25A/0.5A/1A/2.5A/5A/10A | ||
| Current External current sensor input | Crest factor 3: 500mV/ 1V/ 2V/ 5V/ 10V | ||
| Input impedance | Voltage | Input resistance: Approx. 1.66MΩ Input capacitance:Approx. 13pF (Parallel with the resistance) | |
| Current Direct input | Crest factor 3: 5mA/10mA/20mA/50mA/100mA/200mA Crest factor 6: 2.5mA/5mA/10mA/25mA/50mA/100mA | Input resistance:Approx. 500mΩ+10mΩ(wire) Input inductance:Approx. 0.1μH | |
| Crest factor 3: 0.5A/1A/2A/5A/10A/20A Crest factor 6: 0.25A/0.5A/1A/2.5A/5A/10A | Input resistance: Approx. 5mΩ + 3mΩ(wire) Input inductance: Approx. 0.1μH | ||
| Current External current sensor input | Crest factor 3: 0.5V/1V/2V/5V/10V | Input resistance: Approx. 10kΩ | |
| Continuous maximum allowable input | BNC | Max AC 10V | |
| Voltage | Peak value 1131V | ||
| Current | Crest factor 3: 5mA/10mA/20mA/50mA/100mA/200mA Crest factor 6: 2.5mA/5mA/10mA/25mA/50mA/100mA | Maximum current: 0.9A | |
| Crest factor 3: 0.5A/1A/2A/5A/10A/20A Crest factor 6: 0.25A/0.5A/1A/2.5A/5A/10A | Maximum current: 30A | ||
| Line filter | Select OFF or ON(cutoff frequency at 500Hz/5kHz/100kHz), THD ON(cutoff frequency at 500Hz/ 5kHz) | ||
| Frequency filter | Select OFF or ON(cutoff frequency at 500Hz) | ||
| A/D converter | Simultaneous conversion of voltage and current inputs Resolution: 16bits, Maximum conversion rate: 500kSPS | ||
Voltage/ Current/ Active Power Accuracy
| Voltage/ Current/ Active Power Accuracy | |||
Voltage and Current | Accuracy | DC | DC Accuracy ±0.05% reading ± 0.05% of range |
| 0.2Hz f < 45Hz | ±(0.1% of reading + 0.1% of range) | ||
| 45Hz f 66Hz | ±(0.05% of reading + 0.05% of range) | ||
| 66Hz < f 1kHz | (0.1% of reading + 0.1 % of range) | ||
| 1kHz < f 10kHz | ±([{0.07×(f)}% of reading] + 0.3% of range ) | ||
| 10kHz < f 100kHz | ±(0.4 % of reading + 0.4 % of range)±[{0.04×(f–10)}% of reading] | ||
| Frequency range | Data update interval | Measurement Frequency Range | |
| 0.05s | 40Hz ~ 100kHz | ||
| 0.1s | 20Hz ~ 100kHz | ||
| 0.2s | 10Hz ~ 100kHz | ||
| 0.25s | 8Hz ~ 100kHz | ||
| 0.5s | 5Hz ~ 100kHz | ||
| 1s | 2Hz ~ 100kHz | ||
| 2s | 1.5Hz ~ 100kHz | ||
| 5s | 0.5Hz ~ 100kHz | ||
| 10s~60mins | 0.2Hz ~ 100kHz | ||
Active Power Accuracy | Requirements | Same as the conditions for voltage and current. Power factor: 1 | |
| Accuracy | DC | ±(0.05% reading ± 0.05% of range) | |
| 0.1Hz f< 45Hz | ±(0.2% of reading + 0.2% of range) | ||
| 45Hz f 66Hz | ±(0.05% of reading + 0.05% of range) | ||
| 66Hz <f 1kHz | ±(0.1% of reading + 0.1 % of range) | ||
| 1kHz <f 10kHz | ±(0.1% of reading + 0.2% of range)± [{0.06×(f)}% of reading] | ||
| 10kHz < f 100kHz | ±(0.4 % of reading + 0.4 % of range)±[{0.07×(f–10)}% of reading] | ||
Integration
| Integration | |
| Mode | Manual integration mode |
| Timer | Automatically stop integration by setting a timer Selectable range: 0h00m00s ~ 9999h59m59s(0h00m00s, automatically sets to manual integration mode) |
| Count overflow | WP: 999999MWh/-99999MWh, q: 999999MAh/-99999MAh |
| Accuracy | ±(Power accuracy (or current accuracy) + 0.05% of reading) (fixed range) *In auto-range mode, measurement is not performed during range switching. The first measurement after switching and the non-measurement period are included in calculations |
| Range setting | Auto range or fixed range for Integration is available. *Refer to the "Voltage, Current, and Power Measurement" section for range switching. |
| Valid Frequency Ranges for Integration | Active power: DC to 100 kHz Current: DC to 100 kHz |
| Timer accuracy | ±0.02% |
Harmonic
| Harmonic | ||
| Measured item | 1~100 {Voltage, Current, Power, Voltage Ratio, Current Ratio, Power Ratio, Voltage Phase Angle, Current Phase Angle}, and all measurement items when THD is not enabled | |
| Method | PLL synchronization method with Discrete Fourier Transform for harmonic analysis | |
| Frequency range | Fundamental frequency of the PLL source is in the range of 20Hz ~ 480Hz | |
| PLL source | Select voltage or current of each input element | |
| DFT data length | 4096 | |
| Accuracy | 20Hz f < 45Hz | ±(0.2% of reading + 0.2% of range) |
| 45Hz f 66Hz | ±(0.05% of reading + 0.05% of range) | |
| 66Hz < f 1kHz | ±(0.1% of reading + 0.1 % of range) | |
| 1kHz < f 10kHz | ±(0.1% of reading + 0.2% of range)± [{0.06×(f)}% of reading] | |
| 10kHz < f 48kHz | ±(0.4 % of reading + 0.4 % of range)±[{0.07×(f–10)}% of reading] | |
External Current Sensor Input
Measurement range：Crest factor 3: 0.5V/ 1V/ 2V/ 5V/ 10V
MICROTEST 7140 provides a maximum input of 800V and 30A. For current measurement needs exceeding 30A, voltage input-type current
clamps or current sensors can be purchased for testing.
| High Current Measurement Solution | |
| Clamp- on Tr ans f ormer | Cur r ent Sensor |
|
|
| AC 100A/ 1V | AC 500A/ 4V |
| Bandwidth 5kHz | Bandwidth 50kHz |
System
| Supply voltage | 100VAC~240VAC, 50~60 Hz |
| Power consumption | 30VA MAX |
| Display | 4.3"TFT, 800*480 |
| Remote Control Input/Output Signal | USB、RS-232、ETHERNET 10/100M |
| Memory | USB disk、Embed flash |
| Operating environment | Temperature: 13°C to 40°C Humidity: < 80%RH |
| Weight | 2.9kg |
| Dimensions | 214x115x300mm |
最高100 阶谐波分析能力，可显示奇次谐波/ 偶次谐波
MICROTEST 7140 功率分析仪符合IEC61000-4-7 法规对于谐波的量测要求，支援谐波分析能力高达100 阶，量测结果可选择数值或柱状图显示，精准分析各阶谐波的重要参数( 电压、电流、功率、电压失真百分比、功率失真百分比、电压相角、电流相角)。
在谐波分析模式下，工程师可选择显示「奇次谐波」或「偶次谐波」，针对奇次谐波的观察，可快速聚焦于非线性负载或电压畸变等问题，精准定位影响电力品质的主要原因；偶次谐波的筛选，则能有效诊断负载不对称或设备老化等潜在风险，透过简化数据解析，协助工程师更快速掌握问题核心。
｜可筛选只显示奇次谐波
额定频率为基波频率偶数倍的谐波，识别潜在的不对称性或特定设备问题
｜可筛选只显示偶次谐波
额定频率为基波频率奇数倍的谐波，评估非线性负载对系统的影响
仪器采用独立的量测模组，工程师可同步进行谐波分析与积分，达到实时监控与分析
积分模式可长达一万小时积分
MICROTEST 7140 在功率积分模式下，精确量测电流积分(Ah) 与电能(Wh) 长达一万小时的时间范围，长期监测设备的电能消耗与电流需求，适合用于马达/ 旋转机械的耐久性测试，并可透过标配USB Host 通讯存储量测数据。
仪器采用独立的量测模组，可在任何画面背景下同时进行谐波分析与积分，实时检视评估系统中的谐波影响。
支援趋势图分析模式
MICROTEST 7140 功率分析仪支援趋势图分析，透过时间轴更直观的检视电源参数随时间的变化趋势，让工程师更快速精准定位到某个特定瞬间的数据变化。
• 瞬态分析 可设定的时间范围 可设定的输出参数 ( 一次最多 4组 )
• 趋势预测与诊断
• 效率与性能验证
• 比较分析 •数据记录与报告
电压/ 电流量测输入端子采用前出设计，方便快速与治具盒F71201 连接，F71201 的连接线直接接到7140 功率分析仪，待测产品( 如AC 插头) 可直接插在治具盒上，即插即用省去接线的麻烦。
可自行切换大/小电流量测模式，省去人工接线程序
由于大多功率量测仪器无法自行调整接线去抵销仪器本身电流计/ 电压计内阻造成的功耗，需要工程师以正确的接线(U-I/I-U 接线法)，才能精准量测产品的待机功耗，MICROTEST 7140 支援大/ 小电流手动切换量测模式( 需搭载F71201 测试治具，且电流在15A 以下)。
｜大电流模式
量测大电流产品时，可透过F71201 切换为大电流模式，电压量测点直接连接至待测物端，以避免线材回路的压降影响大电流测试时的瓦数测量，造成量测值偏低。
｜小电流模式
量测低待机功耗产品时，可切换为小电流模式，将自动扣除7130 电压输入内阻1.66MΩ 消耗的功率，确保测量的功率接近于0W，特别适用于待机功率的评估。
数值模式下，一次可显示4/8/16组参数
MICROTEST 7140 采用4.3”TFT LCD 显示屏，5 位数测量显示，透过数值模式一次可显示4/8/16 组参数，电压/ 电流/ 功率具备超高精度量测能力( 达±0.05% 读值±0.05% 量程 )。
自动判断PASS/FAIL功能
MICROTEST 7140 支援比较模式，可设定上/ 下限值，适合用于生产线测试，对电压/ 电流/ 功率等多组参数设定上限值与下限值进行PASS/FAIL 判定。
一次可监控4/8组参数的Max值与最小值
MICROTEST 7140 具备同时监测4 组或8 组参数的能力，仪器会显示其参数的Max值与最小值，协助工程师更有效率掌握电力相关指标参数波动与变化，此外，支援图形显示、以简易示波功能观测电压、电流波形，可透过USB Host 存储介面，直接截图波形与纪录数值，无需外挂示波器。
有效分析AC电源参数中含了DC属性的电压/电流
由于电网波动使AC 电源中的波形可能不完全是理想的正弦波，在量测AC 参数时，MICROTEST 7140 可同步显示AC 参数中含了DC 属性的电压/ 电流数据，更全面性的监看电力品质，协助工程师进行电源设计的优化与分析。
线路与频率滤波功能
透过MICROTEST 7140 支援滤波功能，量测时可将讯号中无用的频率滤除，保留下来的是目标频率范围内的讯号，使波形更纯净，更精确量测电力系统中的功率相关的重要参数。
电流传感器输入
可选购电压输入型的电流钳或电流传感器进行测试。
| 大电流测试方案 | |
| 钳式互感器 | 电流传感器 |
|
|
| AC 100A/ 1V | AC 500A/ 4V |
| 频宽 5kHz | 频宽50kHz |
Ordering Information
| Base Unit | 7140 Power Analyzer (100th-order harmonic) | |
| Standard | ||
| Power Cord | ||
 | TL-PM0001 | Test Cable-Red (100cm) |
 | TL-PM0002 | Test Cable-Black (100cm) |
 | TL-PM0003 | Test Cable-Blue (100cm) |
 | TL-PM0004 | Test Cable-Yellow (100cm) |
| Optional | ||
 | F71201 | Test Box |
 | TL-000006 | Ethernet Cable (150cm) |
 | TL-000007 | USB Cable (180cm I Type-A TO Type-B) |
 | AX-PM0001 | Test Probe-Red |
 | AX-PM0002 | Test Probe-Black |
 | AX-PM0003 | Alligator Clips-Yellow |
 | AX-PM0004 | Alligator Clips-Blue |
 | TL-000014 | D-Sub Cable-25M TO 25M (180cm) |
 | Grove Hall Sensor | (AC 500A/ 4V) |
 | Current Transformer | (AC 100A/ 1V) |
