Keysight U1583B User manual

Keysight U1583B Current Clamp
Operating Instructions
The U1583B current clamp is a dual range 40 A and 400 A clamp-on AC current clamp. This U1583B current
clamp is designed for Keysight handheld digital multimeter (DMM) and Keysight handheld oscilloscope. A
BNC-to-banana plug is required to connect the current clamp with the DMM. For the handheld oscilloscope,
use a BNC connector to connect the clamp.
Assistance
For technical assistance, contact your nearest Keysight Sales Ofce or visit the Keysight website at www.
keysight.com/nd/assist for further information.
Regulatory Markings
The CE mark is a registered trademark of the European Community. This CE mark
shows that the product complies with all the relevant European Legal Directives. If it
was accompanied by a year, it indicates the year the design was approved. This ISM
device complies with Canadian ICES-001.
Product contains restricted substance(s) above the maximum value, with 40 year
Environmental Protection Use Period.
The CSA mark is a registered trademark of the Canadian Standards Association.
The C-tick mark is a registered trademark of the Spectrum Management Agency of
Australia. This signies compliance with the Australia EMC Framework regulations
under the terms of the Radio Communication Act of 1992.
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This afxed product label indicates that you must not discard this
electrical/electronic product in domestic household waste.
Safety Information
Please use the Keysight U1583B current clamp only as specied in this manual. Otherwise, the protection
provided may be impaired. A WARNING identies conditions and actions that pose hazards to the user. A
CAUTION identies conditions and actions that may be damaging to the equipment under test. To avoid
possible electric shock, personal injury or damage to this instrument, ensure that you use the current clamp
safely, and refer to the guidelines below.
AC : Alternating Current Range button in release mode.
Range ~ 400 A, Output ~ 1 mV/A
Caution, risk of danger (Refer to the
user’s and service guide for details) DC : Direct Current
400A MAX Maximum allowable current
measurement is 400 A Ground
CAT III 600V Category III 600V over-voltage
protection Double Insulation
Range button in lock mode.
Range ~ 40 A, Output ~ 10 mV/A
Caution, risk of electric shock (Refer
to the user’s and service guide for
detail)
To be applied around or removed
from un-insulated hazardous live
conductors
- Do not use the adapter if it is damaged. Inspect the case before you use the adapter.
Look for cracks or missing plastic. Pay particular attention to the insulation
surrounding the connectors.
- Inspect the clamp jaw before each use. It shall not have cracks or missing parts, or
loose or weakened components. Be sure there is insulation surrounding the jaw.

- Inspect the output cable without exposing the metal to ensure insulation.
- Do not operate the adapter around explosive gas, vapor, or dust.
- Do not exceed the rated voltage/current as marked on the adapter.
- Use with extreme caution when working around bare conductors or bus bars.
Accidental contact with the conductors could result in electric shock.
- Always keep your hand behind the nger guard of the clamp jaw.
- When servicing the adapter, use only specied replacement parts.
- Use with caution when working above 30 V ac rms, 42 V peak, or 60 V dc.
These voltages pose a shock hazard.
- Avoid working alone.
- Do not operate the adapter if the cover is removed or loosened.
- Use individual protective equipment if working in installations with accessible
hazardous live parts.
- If the equipment is used in a manner not specied by the manufacturer, the protection
provided by the equipment may be impaired
- Do not connect to the BNC output or the banana plug to any power sources.
- Use the proper terminals, function, and range for your measurements.
Standard Items Purchase Checklist
The following items are included when you make a purchase:
•U1583B current clamp
•BNC-to-banana plug
•Operating Instructions (this sheet)
General Specications
Specication Current Clamp Specication Current Clamp
Specied Current Range 1 A to 400 A ac Load impedance > 1 M ohm, < 100 pF
Usable Current Range 0.5 A to 400 A Operating Temperature –40 °C to 55 °C (–40 °F to 131 °F)
AC crest factor < 3 Storage Temperature –40 °C to 70 °C (–40 °F to 158 °F)
Bandwidth 10 kHz Measurement Category CAT III 600 V; Pollution degree II
Weight 294 grams Dimensions (HxWxL) 44 mm (H) x 92 mm (W) x 188 mm (L)
Cable length 1500 ± 20 mm Maximum conductor size 30 mm or 16 mm x 2
Maximum Jaw
Opening 32 mm Warm-up time Immediately upon power on
Altitude Up to 2000 meters Warranty One year
Relative Humidity Max 80% RH for temperature up to 35 °C decreasing linearly to 50% RH at 55 °C
Pollution Degree 2
Safety Compliance Safety Compliance Certied by CSA (Canada & USA) for IEC/EN/UL 61010-1 2nd Edition & EN/
IEC 61010-2-032
EMC Compliance Certied to IEC/EN 61326:2002, CISPR 11, and equivalents for Group 1, Class A
Electrical Accuracy Specications
Range Output
Resolution
Accuracy
± (% of reading + digit) at 23 °C ±5 °C, with relative humidity less than 80% RH
Span 48 Hz to 65 Hz 40 Hz to 48 Hz/
65 Hz to 1 kHz
1 kHz to 10 kHz
40 A 10 mV/A 0.5 A ~ 40 A 2 % + 0.5 A 5 % + 0.5 A 10 % + 0.5 A
400 A 1 mV/A 0.5 A ~ 40 A 2.5 % + 0.5 A 4.5 % + 0.5 A 12.5 % + 0.5 A
40 A ~ 200 A 2 % + 0.5 A 4 % + 0.5 A 12 % + 0.5 A
200 A ~ 400 A 1.5 % + 0.5 A 3.5 % + 0.5 A 11.5 % + 0.5 A

• The current conductor must be centered within the jaw aperture and no inuence from
adjacent currents.
• Connect to load impedance > 1 MW||100 pF.
• Crest factor < 3.
Current Clamp with
BNC connector BNC-to-banana plug
Handheld Digital
Multimeter (DMM)
Current Clamp with
BNC connector
Handheld
Oscilloscope
Figure 1: Connection Diagram
Alignment Marks
Put one conductor only within the jaws on the inside section of the
indicated marks as much as possible in order to meet the accuracy of
the specications. Make sure the clamp is vertical to the conductor.
Current Range Selection
To push and release the yellow button for 40 A range and lock the button for 400 A range.
Button Range Output
Release ~ 40 A ~ 10 mV/A
Lock ~ 400 A ~ 1 mV/A
Operation
AC current can be measured without removing the conductor out of the circuit by following the procedure
shown below:
1. Plug the BNC cable to the BNC with dual banana plugs, and then plug into the V/COM terminals on a
multimeter. For a handheld oscilloscope, plug the BNC connector directly to the oscilloscope.
2. Set the ACV measurement and range on the multimeter.
3. Position the jaw to a single conductor and center it accordingly to the alignment marks.
4. Ensure that the arrow marked on the clamp jaw points towards the load for phase measurements or
away from the load (toward the source) for neutral measurements.
5. Observe the AC value on the multimeter or the waveform on the handheld oscilloscope which is
proportional to the current.
6. Select a lower range on the current clamp and set the corresponding sensitivity (mV/A setting)
on the oscilloscope if required.
Calibration Equipment
The pre-calibration guidelines are shown as follows:
•Be sure you are a qualied person to perform the calibration.
•The environment should be 23 °C ±2 °C, and the relative humidity (RH) shall be < 80%.
The test equipment requirements listed in table below or equivalents are required to perform the calibration
and performance verication test procedures. Alternative equipment may be used as long as the accuracy is as
good as or better than the specications listed.
Standard Source Operating Range Accuracy
Required Recommended Equipment
AC Current Calibrator 33 mA to 329.99 mA at 10 Hz to 3 kHz
0.33 A to 2.99999 A at 10 Hz to 3 kHz
3 A to 20.5 A at 10 Hz to 3 kHz
≤ ± 0.2 %
≤ ± 0.6 %
≤ ± 3.0 %
Wavetek 9100 or Fluke 5520A or
5101B or equivalent
Multimeter AC 500.0 mV or 1000.0 mV ≤ ± 1.5 % Keysight U1251A/B or U1252A/B or
Keysight-34405A or equivalent
50 Turns Current Coil 0.2 A to 20.5 A ≤ ± 1.0 % Fluke 5500A Coil or Wavetek 9100
Option 200 or equivalent

Adjustment Procedures
AC 40 A range
1. Lock the RANGE button of the U1583B current clamp to enable the 40 A mode.
2. Connect the output BNC of the U1583B to a BNC-to-dual banana converter plug and proceed to
connect it to the output of the V (HI) and COM (LO) terminals of the multimeter.
3. Set the multimeter to AC 500.0 mV or 1000.0 mV.
4. Open the jaws of the current clamp and centrally place it around the 50 turns coil.
5. Set the calibrator output to 50 turns coil. Congure the calibrator to generate a current of 20 A
with a 60 Hz frequency for the adjustment of the current clamp.
6. Remove two Phillips screws on the back of the current clamp and proceed to adjust VR1 until the
display on the multimeter indicates AC 200 mV ± 0.2 mV. Please refer to the gure below for the
position of VR1.
Figure: U1583B Current Clamp Circuit Board Diagram
AC 400 A range
1. Release the Range button of the U1583B current clamp to enable the 400 A mode.
2. Connect the output BNC of the U1583B to a BNC-to-dual banana converter plug and proceed to
connect it to the output of the V (HI) and COM (LO) terminals of the multimeter.
3. Set the multimeter to AC 500.0 mV or 1000.0 mV.
4. Open the jaws of the current clamp and centrally place it around the 50 turns coil.
5. Set the calibrator output to 50 turns coil. Congure the calibrator to generate a current of 20 A
with a 60 Hz frequency for the adjustment of the current clamp.
6. Remove two Phillips screws on the back of the current clamp and proceed to adjust VR2 until then
display on the multimeter indicates AC 200 mV ± 0.2 mV. Please refer to the earlier gure for the
position of VR2.
Remember to replace the screws to their original position after performing the calibration
adjustments.
Maintenance
Repair or service not covered in this sheet should be performed only by qualied personnel.
To avoid electrical shock or damage to the current clamp, do not allow
moisture to get inside the case and remove all connections before opening
the case.
Cleaning
•Periodically wipe the case with a damp cloth and mild detergent. Do not use cleaners or solvents.
•Open the jaws and wipe the metal areas of the jaws with a lightly oiled cloth, and then wipe the oil with a
dry cloth. Do not allow rust or corrosion to form on the metal ends of the jaws.
Troubleshooting
If the current clamp does not perform properly, follow the steps below to identify the problem:
1. Inspect the mating surface of the jaws for cleanliness. If any external material is present, the
jaws may not close properly and this affects the measurement results.
2. Verify that the function selection and range on the multimeter or oscilloscope are correct and
the range is adjusted on the current clamp.
VR1 for AC 40 A
adjustment
VR2 for AC 400 A
adjustment
© Keysight Technologies 2009-2017
Printed in Malaysia
September 02, 2017
U1583-90107
www.keysight.com