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Maintenance
Performance Test
Verify the probe accuracy by measuring a 25 kV dc ±0.25%
voltage source. When used with a compatible dc voltmeter, the
probe should measure the source with ±1% accuracy. No
calibration adjustments are provided.
Cleaning
Use a soft cloth dampened in distilled water to clean the 80K-40.
Never use solvents or abrasive cleaners. Make sure the 80K-40 is
dry before reuse.
LIMITED WARRANTY & LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and
workmanship under normal use and service. The warranty period is one
year and begins on the date of shipment. Parts, product repairs and
services are warranted for 90 days. This warranty extends only to the
original buyer or end-user customer of a Fluke authorized reseller, and
does not apply to fuses, disposable batteries or to any product which, in
Fluke’s opinion, has been misused, altered, neglected or damaged by
accident or abnormal conditions of operation or handling. Fluke warrants
that software will operate substantially in accordance with its functional
specifications for 90 days and that it has been properly recorded on non-
defective media. Fluke does not warrant that software will be error free or
operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused
products to end-user customers only but have no authority to extend a
greater or different warranty on behalf of Fluke. Warranty support is
available if product is purchased through a Fluke authorized sales outlet
or Buyer has paid the applicable international price. Fluke reserves the
right to invoice Buyer for importation costs of repair/replacement parts
when product purchased in one country is submitted for repair in another
country.
Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the
purchase price, free of charge repair, or replacement of a defective
product which is returned to a Fluke authorized service center within the
warranty period.
To obtain warranty service, contact your nearest Fluke authorized service
center or send the product, with a description of the difficulty, postage and
insurance prepaid (FOB Destination), to the nearest Fluke authorized
service center. Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation
prepaid (FOB Destination). If Fluke determines that the failure was
caused by misuse, alteration, accident or abnormal condition of operation
or handling, Fluke will provide an estimate of repair costs and obtain
authorization before commencing the work. Following repair, the product
will be returned to the Buyer transportation prepaid and the Buyer will be
billed for the repair and return transportation charges (FOB Shipping
Point).
THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND
IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF
WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY
OTHER THEORY.
Since some countries or states do not allow limitation of the term of an
implied warranty, or exclusion or limitation of incidental or consequential
damages, the limitations and exclusions of this warranty may not apply to
every buyer. If any provision of this Warranty is held invalid or
unenforceable by a court of competent jurisdiction, such holding will not
affect the validity or enforceability of any other provision.
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
5/94
®
80K-40
High Voltage Probe
Instruction Sheet
Introduction
The Model 80K-40 is a high voltage accessory probe designed to
extend the voltage measuring capability of an ac/dc voltmeter up
to 40,000 volts Overvoltage Category I. This means the probe can
only be used to make measurements on energy limited circuits
within equipment. Examples include high voltage within
televisions or photo copy machines. DO NOT use this probe to
measure high voltages on power distribution systems. The probe
is a precision 1000:1 voltage divider formed by two matched
resistors. The unusually high input impedance offered by these
resistors minimizes circuit loading and thereby, optimizes
measurement accuracy. A special plastic body houses the divider
and provides the user with isolation and protection from the
voltage being measured.
Specifications
The 80K-40 will achieve rated accuracy when used with a
voltmeter (ac or dc) having an input impedance of 10 MΩ ±1.0%.*
Specifications for the probe are as follows:
†Voltage Range: 1 kV to 40 kV dc or peak ac, 28 kV rms ac
Input Resistance: 1000 MΩ
Division Ratio: 1000: 1 (1000X attenuator)
Accuracy DC:
20 kV to 35 kV: ±1% at 20°C to 30°C; add 1% at 10°C
<20°C and >30°C to 45°C. (For total measurement accuracy
add accuracy specification of voltmeter being used.)
0 kV to <20 kV and >35 kV to 40 kV: ±2%.
Accuracy AC: 60 Hz, ±5%.
Safety: Meets IEC 1010-2-031:1993, Type B, 40 kV dc or, peak
ac, 28 kV rms ac, Overvoltage Category I (voltages derived from
limited energy transformer).
* The input impedance of Autoranging Fluke handheld digital
multimeters varies as a function of range. The only range that
deviates significantly from 10 MΩ is the 3V (Models 21, 23, 25,
27, 70, 73, 75, 77) or 4V (Models 10, 11, 12, 29, 79, 83, 85, 86,
87, 88) range where the impedance is 11.11 MΩ. To enhance the
measurement accuracy when using this range, apply a correction
factor of 0.99, i.e. multiply the displayed reading by .99.
† This probe is intended for low energy applications such as CRT
and similar circuits. Above 2000 meters altitude, and up to 5000
meters, derate linearly the working voltage from 40 kV peak to 28
kV peak, and derate linearly the transient overvoltage from 80 kV
peak to 57 kV peak. Transient overvoltage refers to micro-second
duration impulses caused by lightning or load switching. See
International Electrotechnical Commission Publication 664-1980,
Clause 3.9 Table II, and Appendix A.
Measurement Considerations
Before attempting to use the 80K-40, the following paragraphs
should be read and understood. Particular attention should be
given to Operator Safety.
PN 481978
January 1978, Rev.9, 3/97
© 1978, 1996, 1997 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.