
 
PRV240
Proving Unit
Instruction Sheet
Introduction
The PRV240 Proving Unit (the Product) is an 
electronic voltage source. This Product provides 
a safe, risk free, and easy method to verify proper 
operation of a test tool. Use it to verify either an 
energized source or a de-energized source. Also 
use it in cases where no known voltage source is 
available to verify a test tool. 
The Product does not require personal protective 
equipment (PPE) unless your environment 
requires minimal PPE such as a hard hat, safety 
glasses, or ear plugs.
How to Contact Fluke
To contact Fluke, call one of the following 
telephone numbers:
●Technical Support USA: 1-800-44-FLUKE 
(1-800-443-5853)
●Calibration/Repair USA: 1-888-99-FLUKE 
(1-888-993-5853)
●Canada: 1-800-36-FLUKE (1-800-363-5853)
●Europe: +31 402-675-200
●Japan: +81-3-6714-3114
●Singapore: +65-6799-5566
●Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.uke.com.
To register your product, visit 
http://register.uke.com.
To view, print, or download the latest manual 
supplement, visit 
http://us.uke.com/usen/support/manuals.
Safety
A Warning identies conditions and procedures 
that are dangerous to the user.
 Warning
To prevent possible electrical shock, re, 
or personal injury:
●Read all safety information before you 
use the Product.
●Carefully read all instructions.
●Do not alter the Product and use only as 
specied, or the protection supplied by 
the Product can be compromised.
●Do not touch voltages >30 V ac rms, 
42 V ac peak, or 60 V dc.
●Do not use the Product around 
explosive gas, vapor, or in damp or wet 
environments.
●Do not use the Product if it operates 
incorrectly.
PN 4571866 November 2014, Rev. 1, 11/16
© 2014-2016 Fluke Corporation. All rights reserved. 
Product specications are subject to change without notice.  
●Examine the case before you use the 
Product. Look for cracks or missing 
plastic. Carefully look at the insulation 
around the terminals.
●Do not use the Product if it is altered or 
damaged.
●Remove the batteries if the Product is 
not used for an extended period of time, 
or if stored in temperatures above 50 °C. 
If the batteries are not removed, battery 
leakage can damage the Product.
●You must close and lock the battery 
door before you operate the Product.
●Replace the batteries when the low 
battery indicator shows to prevent 
incorrect measurements.
Symbols
Symbols used in the instructions or on the Product 
are shown in Table 1.
Table 1. Symbols
Symbol Denition
Risk of danger. Important information. 
See manual.
Hazardous voltage.
Battery
Certied by CSA Group to North 
American safety standards.
Conforms to relevant Australian EMC 
standards.
Conforms to European Union directives.
Conforms to relevant South Korean EMC 
Standards.
This product complies with the WEEE 
Directive marking requirements. The 
afxed 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.
Operation
Table 2 shows the locations for the controls and 
interface of the Product.
Use the Product to verify operation of a test tool at 
240 V ac or 240 V dc.
To use:
1. Select the AC or DC function with the 
selection switch on the side.
2. Place the red probe of the test tool into the (+) 
terminal and press down rmly.
3. Place the black probe of the test tool into the 
(-) terminal and press down rmly. 
4. Make sure the meter reading of the Product is 
valid for the test function.
For low impedance test tools, the output voltage 
should be sourced at >50 V ac or dc. It is 
recommended to test both the ac and dc functions 
of the test tool.
Table 2. Overview of PRV240
SOURCE ONLY
1
4
32
hvj02.eps
Item Description
Voltage selection
+ Terminal
−Terminal
Power indicator
Battery Installation/Replacement
 Warning
To prevent possible electrical shock, re, 
or personal injury:
●Do not operate the Product with covers 
removed or the case open. Hazardous 
voltage exposure is possible.
●Repair the Product before use if the 
battery leaks.
●Have an approved technician repair the 
Product.
To install or replace the batteries:
1. Turn the battery-door latch until the unlock 
symbol aligns with the arrow.
2. Lift off the battery door.
3. Insert or replace the four AA batteries. Use 
the correct battery orientation.
4. Install the battery door.
5. Turn the battery-door latch until the locked 
symbol aligns with the arrow.
Specications
Output voltage
240 V ac rms or dc........... ±10 % ≥1 MΩ
LoZ >3 kΩ load ................ 60 V ac typical
50 V ac rms minimum
Output loading...................... See Figure 1
LED power indicator......... Turns on when output voltage is 
present
Battery...................................4 x AA Alkaline batteries NEDA 24 A 
IEC LR03
Battery life............................. 5000 (5-second duration) test cycles 
with >1 MΩ load, 300 tests minimum 
with >3 kΩ  load
Operating temperature..... -10 °C to +50 °C
Operating humidity........... 0 % to 90 % (0 °C to 35 °C)
0 % to 70 % (35 °C to 55 °C)
Operating altitude............. 2000 m
Dimensions....................... 11.7 cm x 7.4 cm x 2.8 cm
(4.6 in x 2.9 in x 1.1 in)
Weight................................ 0.23 kg (8 oz) includes batteries
Safety................................. IEC61010-1, IEC61010-2-030
Electromagnetic Compatibility (EMC)
 International..........................IEC 61326-1: Controlled 
Electromagnetic Environment
CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or uses 
conductively-coupled radio frequency energy that is necessary 
for the internal function of the equipment itself.
Class A: Equipment is suitable for use in all establishments 
other than domestic and those directly connected to a low-
voltage power supply network that supplies buildings used 
for domestic purposes. There may be potential difculties in 
ensuring electromagnetic compatibility in other environments 
due to conducted and radiated disturbances. 
Caution: This equipment is not intended for use in residential 
environments and may not provide adequate protection to 
radio reception in such environments.
Emissions that exceed the levels required by CISPR 11 can 
occur when the equipment is connected to a test object.
Korea (KCC)........................... Class A Equipment (Industrial 
Broadcasting & Communication 
Equipment)
Class A: Equipment meets requirements for industrial 
electromagnetic wave equipment and the seller or user 
should take notice of it. This equipment is intended for use in 
business environments and not to be used in homes.
USA (FCC)..............................47 CFR 15 subpart B. This product 
is considered an exempt device per 
clause 15.103.
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
Fluke Corporation certies this Product was tested and 
veried with applicable calibration procedures during the 
manufacturing process. Fluke’s quality system controls these 
procedures.
The instruments used during the testing and calibration of 
this Product are traceable to SI units through internationally 
recognized measurement standards.
This document is not a certicate of calibration or traceability.
To obtain a certicate of calibration contact the nearest 
Fluke service center to process an order to have your 
Product returned for calibration. A nominal fee is charged for 
calibration service.
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Figure 1.