Fluke 55XXA/COIL 50 User manual

1
55XXA/COIL 50, 55XXA/COIL 10
50, 1, 2, and 10-Turn Current Coil
Instructions
Introduction
Use the 55XXA/COIL 50, 55XXA/COIL 10 (the Product or Coil) to calibrate clamp-type current
meters (clamp meters) that operate by two different principles - as current transformers (ac
only), and by the Hall Effect (both ac and dc). For example, it is impractical to calibrate
1000 A-rated current clamp meters with a 1000 A source. However,you can effectively
multiply the current of the current source calibrator by a factor of 50 to support the
calibration and verification of these clamp meters with the 50 turns of the 55XXA/COIL 50.
Contact Fluke
Fluke Corporation operates worldwide. For local contact information, go to our website:
www.flukecal.com.
Toregister your product, or to view, print,or download the latest manual or manual
supplement, go to our website.
[phone] [e-mail]
Fluke Corporation
P.O. Box 9090
Everett WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
PN 5227455
April 2022 Rev.1, 12/22 (English)
©2022 Fluke Corporation. All rights reserved.
Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

55XXA/COIL 50, 55XXA/COIL 10
Instructions
2
Safety Information
A Warning identifies hazardous conditions and procedures that are dangerous to the user.
XW Warning
To prevent possible electrical shock, fire, or personal injury:
This product is unfused. Do not exceed current and voltage ratings.
Carefully read all instructions.
Do not alter the Product and use only as specified, or the protection supplied by
the Product can be compromised.
Do not use the Product if it operates incorrectly.
Do not use the Product if it is altered or damaged.
Symbols
Table 1 lists the symbols used on the Product or in this document.
Table 1. S ymbols
Symbol Description
»Consult user documentation.
WWARNING. RISK OF DANGER.
XWARNING. HAZARDOUS VOLTAGE. Risk of electric shock.
PConforms to European directives.
~
This product complies with the WEEE Directive marking requirements. The
affixed label indicates that you must not discard this electrical/electronic
product in domestic household waste. Product Category: With reference to the
equipment types in the WEEE Directive Annex I, this product is classed as
category 9 "Monitoring and Control Instrumentation" product. Do not dispose of
this product as unsorted municipal waste.

50, 1, 2, and 10-Turn Current Coil
Specifications
3
Specifications
Calculate Total Specification
The total specification of the effective current that the clamp meter measures is a function of
the clamp/coil interaction and of the current calibrator. To determine the total specification
use this formula:
Example:
A Fluke Calibration 5560A Calibrator supplies 13 A at 60 Hz to the 55XXA/COIL 50 generating
an effective current of 650 A (50 x 13 A), 60 Hz). The 1-year specification of the Calibrator at
13 A is ±(0.07 % + 8 mA), which is equivalent to 0.13 % of the 13 A calibrator output. The total
specification of the calibrator and the coil together as a percentage of the output:
Specification of calibrator current = ±0.13 %
Specification due to the Coil = 0.65 %
The RSS of these two specifications determines the total specification of the source/coil
combination:
For higher frequencies or higher current levels, the compliance voltage may exceed 1 V. If the
compliance voltage exceeds 1 V, then compliance adders must be added to the Calibrator
specification.
55XXA/COIL 50 55XXA/COIL 10
Number of turns 50 1, 2, or 10
Maximum Current 20 A rms, continuous
30.2 A rms, 5 minutes 30.2 A rms, continuous
Maximum Duty Cycle Derating <20 A, continuous
>20 A, 50 % Duty Cycle -
Maximum Voltage, All Inputs 30 V to Earth
Minimum Inner Diameter of Clamp Jaws 23 mm
1-Turn: 3 mm
2-Turn: 6 mm
10-Turn: 10 mm
Coil Ratio ±0.65 %[1] , DC to440 Hz.
[1] Includes coil/clamp interaction but does not include current source errors.
S2
coil + U2 source
Stotal =
0.112 + 0.562 + 0.66%
Stotal =

55XXA/COIL 50, 55XXA/COIL 10
Instructions
4
Use the Coil
Clamp meters and other current transducers often operate as current transformers, with differing
degrees of magnetic coupling between primary and secondary that vary from meter to meter. The
position of the clamp meter, with respect to the cable, affects the magnetic coupling between
primary and secondary of the current transformer, which causes variation in the reading of the
clamp meter.
To make the most accurate and repeatable measurements, carefully position the clamp meter on
the Coil base in relation to the markings on the Coil, see Figure 1 and Figure 2.
55XXA/COIL 10 (see Figure 1)
• For 10 turns, center the clamp meter on the Coil base.
• For 1-turn and 2-turns, align the clamp meter with the markings on the Coil base.
55XXA/COIL 50 (see Figure 2)
• Center the clamp meter on the base.
Calibration accuracy to specifications is guaranteed only with proper clamp alignment. Align the
clamp meter as much as possible on the base during calibration and verification. If the clamp meter
has alignment marks, align those marks with the center-bundled wire of the Coil.
Figure 1. 55XXA/COIL 10
HIGH1,2&10-TURNCURRENT COIL
55XXA/Coil10
1TURN2TURN
10TURN
5560A
MAX.RATING:
30.2A
WARNING:UNFUSED.
EXCEEDINGABOVE
RATINGS CANCAUSE
BURN HAZARD OR FIRE.
COMMON
2TURN
1TURN
10 TURN
30V ALL INPUTS
30.2AMAX

50, 1, 2, and 10-Turn Current Coil
Use the Coil
5
Figure 2. 55XXA/COIL 50
COMMON
10 TURN
30V

55XXA/COIL 50, 55XXA/COIL 10
Instructions
6
LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for one year from the
date of purchase. This warranty does not cover fuses, disposable batteries, or damage from
accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or
handling. Resellers are not authorized to extend any other warranty on Fluke's behalf. To obtain
service during the warranty period, contact your nearest Fluke authorized service center to
obtain return authorization information, then send the product to that Service Center with a
description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A
PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING
FROM ANY CAUSE OR THEORY. Since some states or countries do not allow the exclusion or
limitation of an implied warranty or of incidental or consequential damages, this limitation of
liability may not apply to you.
Fluke Corporation Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett, WA 98206-9090 5602 BD Eindhoven
U.S.A The Netherlands
11/99