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 digital multimeter (DMM) and Keysight oscilloscope. A BNC-to-banana plug
adapter is required when connecting the current clamp to a multimeter. For oscilloscope, connect the current
clamp directly to the input terminal with the BNC connector.
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 current clamp if it is damaged. Inspect the case before using the
current clamp. Look for cracks or missing plastic. Pay particular attention to the
insulation surrounding the connectors.
-Inspect the clamp jaw before each use. No cracks, missing, loosen or weaken parts
shall be observed. Ensure there is insulation surrounding the jaw.
-Inspect the cable without exposing the metal to ensure insulation.
-Do not operate the current clamp around explosive gas, vapor, or dust.
-Do not exceed the rated voltage/current as marked on the current clamp. Use with
extreme caution when working around bare conductors. Accidental contact with the
exposed conductors could result in electric shock.
-Always keep your hand behind the nger guard of the clamp jaw.
-When servicing the current clamp, 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.
-Do not operate the current clamp 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 operate the current clamp around ammable gases or fumes, vapor, or wet
environments.
-Do not connect to the BNC output or the banana plug to any power sources.
-Use 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 adapter
- Operating Instructions (this sheet)
General Specications
The current clamp is designed for indoor use.
Specication Current Clamp Specication Current Clamp
Specied Current Range 1 A to 400 A ac Load impedance > 1 MΩ, < 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 g Dimensions (HxWxL) 44 mm (H) x 92 mm (W) x 188 mm (L)
Cable length 1500 ± 20 mm Maximum conductor size 30 mm
Maximum Jaw
Opening 32 mm Warm-up time Immediately upon power on
Altitude Up to 2000 m Warranty One year
Relative Humidity Max 80% RH for temperature up to 35 °C, decrease 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 Specications
Range Output
Sensitivity
Accuracy
± (% of reading + as specied below) 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]
1 kHz to 10 kHz[1]
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 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
[1] Typical accuracy applies across all frequency ranges above 440Hz.
• 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 adapter Multimeter
Current Clamp with
BNC connector Oscilloscope
Figure 1: Connection Diagram
Alignment Marks
Put only one conductor within the jaws and align the conductor to the
indicated marks as much as possible in order to meet the accuracy
specications. Make sure the current clamp is perpendicular to
the conductor.
Current Range Selection
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. Connect the current clamp to a multimeter or oscilloscope as shown in Figure 1.
2. Set the multimeter to measure ACV with measurement range greater than 400 mV full scale.
3. Position and align the jaw to a single conductor accordingly.
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 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.
Figure 2: Allignment Marks
Figure 3: Conductor Allignment Direction

Calibration Recommendation
The pre-calibration guidelines are shown as follows:
- Calibration should only be performed by a qualied personnel.
- The environment should be 23 °C ± 5 °C, and the relative humidity < 80% (RH).
The test equipment requirements listed in Table 1 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 equal
or better than the specications listed.
Table 1: Test Equipment Requirements
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 %
Fluke 5522A or equivalent
Multimeter ACV > 400 mV full scale ≤ ± 1.5 % Keysight 34450A or equivalent
50 Turns Current Coil 0.2 A to 20.5 A Not applicable Fluke 5500A/COIL or equivalent
A one-year interval is adequate for most applications. Accuracy specications are war-
ranted only if adjustment is made at regular calibration intervals. Accuracy specications
are not warranted beyond the one-year calibration interval. Keysight does not recommend
extending calibration intervals beyond two years for any application.
Performance Verication Test
Range 5522A Output Reference Value (5522A Output * 50
turns current coil) Frequency LCOMP Error limits
(from nominal 1 year)
40 A
0.01 A 0.5 A 48 Hz OFF ±0.51 A
65 Hz OFF ±0.51 A
0.72 A 36 A
40 Hz ON ±2.30 A
48 Hz ON ±1.22 A
65 Hz ON ±1.22 A
440 Hz ON ±2.30 A
400 A
0.1 A 5 A 48 Hz OFF ±0.625 A
65 Hz OFF ±0.625 A
0.8 A 40 A
40 Hz ON ±2.1 A
48 Hz ON ±1.3 A
65 Hz ON ±1.3 A
440 Hz ON ±2.10 A
2.99999 A 150 A 40 Hz ON ±6.49 A
4 A 200 A
48 Hz ON ±3.5 A
65 Hz ON ±3.5 A
440 Hz ON ±7.5 A
7.2 A 360 A
48 Hz ON ±5.9 A
65 Hz ON ±5.9 A
440 Hz ON ±13.1 A

Adjustment Procedures
AC 40 A range
1. Lock the RANGE button of the U1583B current clamp to 40 A.
2. Connect the current clamp to a multimeter as shown in Figure 1.
3. Set the multimeter to measure ACV with range > 400 mV full scale.
4. Open the jaws of the current clamp and align to the 50 turns coil.
5. Connect calibrator AUX terminals to 50 turns coil. Congure calibrator to generate a
current of 0.4 A with a 55 Hz frequency (equivalent to 20 A, 55 Hz with 50 turns coil) for the
adjustment of the current clamp.
6. Remove two Phillips screws on the back of the current clamp and proceed to adjust VR1 using
a cermanic trimmer until the display on the multimeter indicates AC 200 mV ± 0.2 mV. Refer to
Figure 4 for the position of VR1.
Figure 4: U1583B Current Clamp Circuit Board Diagram
AC 400 A range
1. Release the Range button of the U1583B current clamp to 400 A.
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 align to the 50 turns coil.
5. Connect calibrator 20 A and AUX LO terminal to 50 turns coil. Congure calibrator to generate a
current of 4 A with a 55 Hz frequency (equivalent to 200 A, 55 Hz with 50 turns coil) 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 the
display on the multimeter indicates AC 200 mV ± 0.2 mV. Refer to Figure 4 for the position of VR2.
Remember to replace the screws to their original position after performing the calibration
adjustments.
Maintenance
Repair or service should only be performed by a 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 surface 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. The presence of foreign material may
prevent the jaws from closing properly and affects the measurement results.
2. Verify and ensure the current clamp range is appropriate.
3. Verify and ensure the function and range selection on the multimeter or oscilloscope are
appropriate.
VR1 for AC 40 A
adjustment
VR2 for AC 400 A
adjustment
© Keysight Technologies 2009-2020
Edition 7, September 2020
Printed in Malaysia
U1583-90107
www.keysight.com

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