General Safety Instructions: Read the following safety instructions to avoid injury and prevent damage to this product or any products connected to it. Use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Personal Injury Connect and Disconnect Properly. Connect the probe output to the measurement instrument before connecting the probe to the circuit under test.
Safety Terms and Symbols: Terms in This Manual. These terms may appear in this manual: Warning statements identify conditions or practices WARNING. that could result in injury or loss of life. Caution statements identify conditions or practices CAUTION. that could result in damage to this product or other property. ...
The PA-677 current probe enables a general purpose oscilloscope to display AC and DC current signals up to 140 amps Peak (50A RMS). The PA-677 current probe can also make AC and DC measurements with a multimeter by using the recommended accessory MT-246N (BNC-to-banana) plug adapter.
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Table 1: PA-677 controls and indicators Control/Indicator Description Current flow symbol. The arrow shows the probe’s polarity convention for measuring current flowing from positive to negative. Zero adjustment. Rotate to adjust the probe output to zero when there is no current present. It may also be used to offset a DC signal component.
2. Move the OFF/ Range switch to the 50 mV/A or 500 mV/A position to turn on the probe. (※The PA-677 current probe has a green LED power/battery indicator. If the LED does not light, replace the battery or use specified power adaptor.)
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See Figure 4. The sensitivity of the PA-677 current probe is multiplied times the number of loops in the jaws. For example: 500 mV/A X 4 turns = 2000 mV/A.
PA-677 AC/DC Current Probe. 1. Notes on Battery and Power Converter: The PA-677 current probe uses a single square 9 V battery. This machine is a high power product. Please use the specified alkaline battery. As the battery in the PA-677 current probe is drained, significant gain errors may occur.
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PA-677 has in its design a priority external power circuit therefore it is safe to simultaneously install the battery and the external power supply. During usage, removing the external power supply will not produce waveform anomaly or any damage. However when external power is used for an extended time (more than 1 week), removal of battery is recommended.
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Do not clean with solvents or abrasives. Do not immerse the probe. 4. Preparation for Shipment Our company has designed a special box to be used for PA-677, convenient for storage and shipment. Please do not discard it. If the original packaging is unfit for use or not available, use the following...
Specifications: These characteristics apply to an adjusted PA-677 AC/DC Current Probe installed on an oscilloscope of any brand. The oscilloscope must be warmed up for at least 20 minutes and be in an environment with the temperature at 10℃~30℃ and the humidity at 0~80.
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Table 3: Voltage and current ratings Maximum working Maximum Maximum current (A) Working floating voltage (V) voltage (V) Range Range Rating 50 mV/A 500 mV/A DC + peak AC 70 AC peak AC peak-peak 140 1200 RMS CAT III RMS CAT II RMS CAT I *See Figure 7 for frequency derating.
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Table 5: Environmental Characteristics Temperature 0°C to +50°C Working (+32°F to +122°F) -20°C to +80°C Storage (-4°F to +176°F) 0°C to 40°C, 95% humidity Humidity 40°C to 50°C, 45% humidity Pollution Degree Figure 6: Gain versus frequency at 1 A peak, typical ...
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Figure 7: Maximum current versus frequency Figure 8: DC signal linearity in the 50 mV/A range, typical ...
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Figure 9: Phase versus frequency at 1 A peak, typical Table 6: Certifications and compliances Compliance was demonstrated to the following EC Declaration specification as listed in the Official Journal of the European Union: Conformity – Low Voltage Low Voltage Directive 73/23/EEC, as amended by 93/68/EEC EN 61010-1/A2:1995...
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Table 6: Certifications and compliances (cont.) Terminals on this product may have different Installation installation (overvoltage) category designations. (Overvoltage) The installation categories are: Category CAT III Distribution-level mains (usually permanently connected). Equipment at this level is typically in a fixed industrial location.
Product number MT-246N. Designed with color fool proof design to avoid polarity mistake when connecting to digital meter. The PA-677 does not have any user repairable assemblies. If you should have trouble with your probe, contact your local Service Center or representative for help.
準備啟動: PA-677 電流探測鉗 (圖一)使一種通用示波器顯示 AC 及 DC 電流訊號至 140 amps Peak (50A RMS)。PA-677 電流探測鉗也可以用多功能電表進行 AC 和 DC 的數值測量,利用附屬的配件 MT-246N (BNC-to-banana)接頭轉 接器即可。 Press Button Battery Inside (suggested outdoor using) Output Into BP-250 Max. 10.3 Wire Range Selection DC Zero Offset (Power On/Off) AC Adaptor Input 圖...
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5. 適當的調整測試鉗的檔位和示波器的 Time Base 以獲得清楚穩定的波形 信號。要同時看到 AC 和 DC 電流,把示波器的輸入連結撥到 DC;當輸 入連結撥到 AC 時.只會顯示 AC 電流。 連接不同的量測機器所顯示出來的電流會有所不同。雖然 RMS 電流只能 適用在低頻率電流波,但是瞬時峰值也可能是相當高的。圖 3 顯示用電 阻負載所繪製出的電流線和用馬達控制器所繪製出來的區別。 圖 3:典型的電流波形比較 ...
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規格: 這些電氣特性適用於裝在任何廠牌已經調校過的示波器上的 PA-677 AC/DC 電流探測棒 。 示波器必須先預熱至少 20 分鐘並用在溫度(10-30)與溼度(0-80) 環境內。 表 2: 電氣特性 50/500 mV/A 電流範圍 ±3% ±20 mA at 500 mV/A 典型 DC 精確度 (20 mA to 14 A peak range) ±4% ±200 mA at 50 mV/A (200 mA to 100 A peak range) ±15% max at 50 mV/A...
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表 3: 電壓及電流測定 Maximum working current Maximum Maximum Working floating (A) 最大工作電流 (A) voltage (V) voltage (V) Range (範 Range(範 最大工作電 最大浮游電 Rating 圍) 圍) 壓 壓 測定 50 mV/A 500 mV/A DC + peak AC peak AC peak – 1200 peak RMS CAT III...
Accessories / 附件: BP-250 ADP-110 or 220 ... PA-677 MT-246N The diagram showing how PA-677 connect to Oscilloscope or DMM. PA-677 連接到示波器或數位電錶示意圖。 ...
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