Fluke A40B Series Precision DC and AC Current Shunts
- Comprehensive kit with 14 low-inductance coaxial current shunts, adapters, connectors, and a rugged transit/storage case.
- Designed for currents ranging from 1 mA to 100A, intended for laboratory use in making directly measured absolute AC or DC current measurements as well as AC/DC current transfer meaurements.
- Excellent resistance value stability, a superior self-heating power coefficient, and a low temperature coefficient.
- Direct current measurement from DC to 100 kHz with a higher accuracy than previous commercially available shunt technology.
- Precision measurements in a single step process, simplifying the traditional AC/DC transfer methods.
- Description
- Additional information
- Specifications
Description
The Fluke A40B series represents a significant advancement in precision current shunt technology, designed for demanding laboratory environments where the utmost accuracy in current measurements is paramount.
Key Features:
- Unparalleled Accuracy:
- Offers exceptional accuracy and stability, minimizing measurement uncertainties and ensuring reliable, trustworthy current measurements.
- This high level of accuracy is crucial for maintaining the integrity of the measurement chain in critical applications.
- Comprehensive Current Range:
- Covers a wide range of currents, typically from 1 mA to 100 A, accommodating a diverse array of measurement needs.
- This versatility allows for the calibration of a broad spectrum of current sources and measurement devices.
- Minimized Inductance:
- Features low inductance designs, minimizing the impact of inductive effects on AC current measurements.
- This ensures accurate and reliable measurements even in high-frequency applications.
- Exceptional Stability:
- Exhibits outstanding resistance value stability, a superior self-heating power coefficient, and a low temperature coefficient.
- These characteristics ensure consistent and reliable performance over time, minimizing the impact of environmental factors on measurement accuracy.
- Versatility and Adaptability:
- Suitable for a wide range of applications, including:
- Calibrating current sources and standards with high precision.
- Verifying the accuracy of current transformers.
- Suitable for a wide range of applications, including:
- Supporting research and development in metrology and other scientific fields.
The Fluke A40B series transcends traditional current shunt limitations, offering a new level of precision and reliability. By minimizing measurement uncertainties and ensuring consistent performance, these shunts empower metrology laboratories and researchers to achieve the highest levels of accuracy in their current measurements, driving advancements in science and technology.
Additional information
| Brand | Fluke Calibration |
|---|
Specifications: A40B Series Precision DC and AC Current Shunts
Basic Electrical Specification Summary
| Shunt Nominal Current |
Nominal Resistance (Ohms) |
Basic Specification ±μA/A, TCal ±1 °C, ≤50 % RH | ||||
| DC | 1 kHz | 10 kHz | 30 kHz | 100 kHz | ||
| 1 mA | 800 | 20 | 55 | 75 | 75 | 150 |
| 10 mA | 80 | 20 | 26 | 26 | 26 | 26 |
| 20 mA | 40 | 20 | 26 | 26 | 26 | 26 |
| 50 mA | 16 | 20 | 23 | 23 | 23 | 23 |
| 100 mA | 8 | 20 | 24 | 24 | 24 | 24 |
| 200 mA | 4 | 20 | 26 | 26 | 26 | 26 |
| 500 mA | 1.6 | 21 | 27 | 27 | 27 | 28 |
| 1 A | 0.8 | 21 | 27 | 28 | 28 | 31 |
| 2 A | 0.4 | 21 | 27 | 30 | 30 | 48 |
| 5 A | 0.16 | 21 | 31 | 32 | 40 | 71 |
| 10 A | 0.08 | 26 | 37 | 60 | 61 | 92 |
| 20 A | 0.04 | 26 | 43 | 52 | 70 | 113 |
| 50 A | 0.016 | 32 | 55 | 80 | 81 | 144 |
| 100 A | 0.008 | 35 | 65 | 90 | 98 | 174 |
Maximum AC-DC Difference
| Shunt Nominal Current: | Maximum AC-DC Difference (± ppm)1,2 | |
| 1 kHz | 100 kHz | |
| 1 mA3 | 53 | 150 |
| 10 mA | 20 | 40 |
| 20 mA | 18 | 30 |
| 50 mA | 13 | 16 |
| 100 mA | 14 | 27 |
| 200 mA | 17 | 28 |
| 500 mA | 17 | 21 |
| 1 A | 17 | 23 |
| 2 A | 17 | 44 |
| 5 A | 23 | 69 |
| 10 A | 28 | 98 |
| 20 A | 37 | 150 |
| 50 A | 47 | 180 |
| 100 A | 60 | 300 |
| 1 Specifications indicate the maximum flatness deviation from dc, and include both measured AC-DC difference and the uncertainty of measurement. They are stated at k=2, approximately 95 % confidence. 2 Includes 1-year stability of the AC-DC difference. 3 Specifications for the 1 mA current shunt are for TCal ± 1 °C. |
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| General Specifications | |
| Calibration Documentation | 17025 accredited report of calibration included |
| Dimensions (maximum) | Shunt Value: 1 mA to 2 A Height: 70 mm (2.75 in) Width: 70 mm (2.75 in) Overall Length1: 124 mm (4.9 in) Shunt Value: 5 A to 20 A Height: 130 mm (5 in) Width: 130 mm (5 in) Overall Length1: 210 mm (8.25 in)) Shunt Value: 50 A and 100 A Height: 200 mm (7.9 in) Width: 200 mm (7.9 in) Overall Length1: 343 mm (13.5 in)) 1 Includes input and output connectors; subject to change by component vendor. |
| Physical/mechanical parameters | Shunt Value: 1 mA to 20 A Weight: 0.7 kg (1.6 lb) Input Connector: Type-N (female) Output Connector: Type-N (female) Shunt Value: 50 A and 100 A Weight: 3.4 kg (7.5 lb) Input Connector: Type-LC (female) Output Connector: Type-N (female) |
| Operating environment | Temperature: 13 °C to 33 °C Calibration temperature (TCal) range: 18 °C to 28 °C Humidity range for best specification 1,2: ≤ 50 % RH Altitude: 0 m to 3,000 m 1 Resistance stability is affected by humidity, but changes are reversible. 2 If the shunts are calibrated outside this RH, stability specifications will be met as long as the shunts are stored and used at the same relative humidity ± 10 % RH. |
| Storage and transit environments (for models other than the 1 mA current shunt) | Temperature to avoid damage: -20 °C to 140 °C Temperature and humidity to maintain performance1: 5 °C to 45 °C; 15 % to 80 % RH Non-operating altitude: 0 m to 12,000 m 1 Storage at extremes of temperature or humidity will cause a temporary change of shunt resistance by up to ± 20 ppm. When subsequently stored or used within the limits of the operating environment, the shunts will recover to their original resistance value within 30 days. |
| Additional 1 mA current shunt specifications | |
| Output resistance | 8 mΩ |
| Maximum safe output current | 11 mA (e.g., 1 V output into 90 Ω) |
| Maximum capacitive load | 800 pF |
| Output voltage regulation | 15 ppm/100 pF |
| Maximum output dc v offset | ± 100 μV (typical ± 25 μV) |
| Typical error @ 1 MHz | < 2 % |
| Battery specifications | |
| Battery size | AAA (44.5 mm x 10.5 mm) |
| Battery technology | Nickel-Metal Hydride (NiMH) |
| Number of batteries required | 8 (in 2 groups of 4) |
| Nominal battery voltage | 1.2 V (4.8 V per group of 4) |
| Typical battery capacity | 800 mAh |
| Storage and transit environment to preserve the batteries | Less than 90 days: -20 °C to 40 °C Less than one year: -20 °C to 30 °C Charging time (from fully discharged): 100 minutes |
| Maximum operating time between charges | Maximum output load (11 mA): 18 hours High impedance load: 24 hours Recommended cooling period: 100 minutes To prevent loss of battery capacity recharge at least twice per year. |
