Agilent Technologies U1452A User manual

Agilent Technologies
Agilent U1452A,
U1452AT, and U1451A
Insulation Tester
User’s Guide
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com

II U1452A/U1452AT/U1451A User’s Guide
Notices
© Agilent Technologies, Inc. 2014
No part of this manual may be reproduced in
any form or by any means (including elec-
tronic storage and retrieval or translation
into a foreign language) without prior agree-
ment and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
U1451-90003
Edition
First Edition, January 13, 2014
Agilent Technologies, Inc.
5301 Stevens Creek Blvd.
Santa Clara, CA 95051 USA
Warranty
The material contained in this docu-
ment is provided “as is,” and is sub-
ject to being changed, without notice,
in future editions. Further, to the max-
imum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a par-
ticular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connec-
tion with the furnishing, use, or per-
formance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the sep-
arate agreement shall control.
Technology Licenses
The hardware and or software described in
this document are furnished under a license
and may be used or copied only in accor-
dance with the terms of such license.
Restricted Rights Legend
U.S. Government Restricted Rights. Soft-
ware and technical data rights granted to
the federal government include only those
rights customarily provided to end user cus-
tomers. Agilent provides this customary
commercial license in Software and techni-
cal data pursuant to FAR 12.211 (Technical
Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Com-
puter Software Documentation).
Safety Notices
CAUTION
A CAUTION notice denotes a haz-
ard. It calls attention to an operat-
ing procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly per-
formed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated condi-
tions are fully understood and
met.

U1452A/U1452AT/U1451A User’s Guide III
Safety Symbols
The following symbols on the instrument and in the documentation indicate precautions
which must be taken to maintain safe operation of the instrument.
Direct current (DC) Caution, risk of electric shock
Alternating current (AC)
Caution, risk of danger (refer to
this manual for specific Warning
or Caution information)
Both direct and alternating
current
Category III 1000 V overvoltage
protection
Earth (ground) terminal Category IV 600 V overvoltage
protection
Equipment protected throughout
by double insulation or reinforced
insulation
Do not use in distribution systems
with voltages higher than 600 V
CAT III
1000 V
CAT IV
600 V

IV U1452A/U1452AT/U1451A User’s Guide
Safety Considerations
Read the information below before using this tester. Model U1452A appears in all
illustrations.
WARNING
• Do not use the tester if it is damaged. Before you use the tester, inspect the case.
Look for cracks or missing plastic. Pay particular attention to the insulation
surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal. Check the test
leads for continuity. Replace damaged test leads before you use the tester.
• Do not operate the tester around explosive gas, vapor, or wet environments.
• Do not apply more than the rated voltage (as marked on the tester) between
terminals, or between terminal and earth ground.
• Before use, verify the tester's operation by measuring a known voltage.
• When servicing the tester, use only the specified replacement parts.
• Use caution when working above 60 VDC, 30 VAC RMS, or 42.4 V peak. Such
voltages pose a shock hazard.
• When using the probes, keep your fingers behind the finger guards on the probes.
• Connect the common test lead before you connect the live test lead. When you
disconnect the leads, disconnect the live test lead first.
• Remove the test leads from the tester before you open the battery cover.
• Do not operate the tester with the battery cover or portions of the cover removed
or loosened.
• To avoid false readings, which may lead to possible electric shock or personal
injury, replace the battery as soon as the low battery indicator appears and
flashes.
• Ensure that you do not perform insulation resistance tests in distribution systems
with voltages higher than 600 V.
• For insulation resistance tests, ensure that you select a suitable test voltage for
the equipment to be tested.

U1452A/U1452AT/U1451A User’s Guide V
CAUTION
•Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance, continuity, or capacitance.
•Use the proper terminals, function, and range for your measurements.
•This device is for use at altitudes of up to 2,000 m.
•Always use the specified battery type. The power for the tester is supplied with four
1.5 V AA batteries. Observe the correct polarity markings before you insert the
batteries to ensure proper insertion of the batteries in the tester.

VI U1452A/U1452AT/U1451A User’s Guide
Environmental Conditions
This instrument is designed for indoor use and in an area with low condensation. The table
below shows the general environmental requirements for this instrument.
Environmental condition Requirement
Te m p e r at u r e
• Operating condition
•–20 °C to 55 °C, 0% to 80% RH (using Alkaline batteries),
20 minutes operating time
• Storage condition
•–40 °C to 70 °C, 0% to 80% RH (without batteries)
Humidity Full accuracy up to 80% RH for temperatures up to 30 °C,
decreasing linearly to 50% RH at 55 °C
Altitude Up to 2,000 meters
Pollution degree Pollution degree II
NOTE
The U1452A/U1452AT/U1451A Insulation Tester complies with the following safety and EMC
requirements:
• Safety compliance
•Designed in compliance to IEC/EN 61010-1:2010 for Category III 1000 V and Category IV 600 V
•Designed in compliance to IEC/EN 61557-1, IEC/EN 61557-2, and IEC/EN 61557-4
• EMC compliance
•Commercial limits compliance with IEC 61326-1:2005/EN 61326-1:2006

U1452A/U1452AT/U1451A User’s Guide VII
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.
The C-tick mark is a registered
trademark of the Spectrum
Management Agency of Australia. This
signifies compliance with
the Australia EMC Framework
regulations under the terms of the
Radio Communication Act of 1992.
ICES/NMB-001 indicates that this ISM
device complies with the Canadian
ICES-001.
Cet appareil ISM est confomre a la
norme NMB-001 du Canada.
This instrument complies with the
WEEE Directive (2002/96/EC) marking
requirement. This affixed product label
indicates that you must not discard
this electrical or electronic product in
domestic household waste.
The CSA mark is a registered
trademark of the Canadian Standards
Association.
This symbol indicates the time period
during which no hazardous or toxic
substance elements are expected to
leak or deteriorate during normal use.
Forty years is the expected useful life
of the product.

VIII U1452A/U1452AT/U1451A User’s Guide
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking requirement.
This affixed product label indicates that you must not discard this electrical or electronic
product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this instrument is
classified as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.

U1452A/U1452AT/U1451A User’s Guide IX
Declaration of Conformity (DoC)
The Declaration of Conformity (DoC) for this instrument is available on the Agilent website.
You can search the DoC by its product model or description at:
http://regulations.corporate.agilent.com/DoC/search.htm
NOTE
If you are unable to search for the respective DoC, please contact your
local Agilent representative.

X U1452A/U1452AT/U1451A User’s Guide
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U1452A/U1452AT/U1451A User’s Guide XI
Table of Contents
1 Introduction
About This Manual 2
Documentation map 2
Safety notes 2
Preparing Your Tester 3
Check the shipment 3
Install or change the batteries 3
Turn on your tester 6
Select the range 6
Adjust the tilt stand 7
Connect to the Handheld Meter Logger Software 8
Connect the Bluetooth adapter 9
Your Tester in Brief 10
Dimensions 10
Overview 12
Rotary switch 14
Keypad 16
Display screen 20
Input terminals 24
Cleaning Your Tester 25
Additional Features 26
Automatic power-off 26
Hazardous voltage indication 26
Power-on options 26
2 Making Measurements
Insulation Resistance Test 30
Using the Remote Switch Probe 32

XII U1452A/U1452AT/U1451A User’s Guide
Locking the test 33
Timed insulation resistance/earth-bond resistance test 34
Measuring the Dielectric Absorption Ratio (DAR) 35
Measuring the Polarization Index (PI) 36
Viewing the leakage current 37
Earth-Bond Resistance Test 38
Measuring AC or DC Voltage 41
Auto AC or DC signal identification 43
Measuring Frequency 44
Measuring Resistance 46
Continuity Test 48
Measuring Capacitance 50
3 Tester Features
Making Relative Measurements (Null) 54
Freezing the Display (TrigHold and AutoHold) 55
Performing Limit Comparisons (Limit) 57
Recording Measurement Data (Log) 59
Performing manual logs (HAND) 60
Performing interval logs (AUTO) 60
Performing event logs (TRIG) 61
Reviewing Previously Recorded Data (View) 63
4 Setup Options
Using the Setup Menu 66
Editing numerical values 67
Setup Menu Summary 68
Setup Menu Items 71

U1452A/U1452AT/U1451A User’s Guide XIII
Changing the variation count 71
Enabling smooth mode 71
Changing the beep frequency 72
Changing the auto power-off (APO) timer 73
Changing the LCD backlight timeout 73
Changing the continuity alert 74
Disabling the power-on melody 75
Changing the battery type 75
Resetting the tester’s Setup options 76
Changing the display count 76
Changing the cable length unit 77
Changing the cable length scale 78
Changing the alert indicators 78
Changing the sample interval duration 79
Changing the recording option 80
Changing the IR and EBR test period 80
Changing the maximum inhibit voltage for IR tests 81
Disabling the lock once feature 82
Changing the button operation on the remote switch probe 82
Changing the Dielectric Absorption Ratio (DAR) for IR
tests 83
5 Characteristics and Specifications
Product Characteristics 86
Specification Considerations 88
Measurement Category 88
Electrical Specifications 89
DC specifications 89
AC specifications 91
Capacitance specifications 92
Frequency specifications 93
Sensitivity for voltage measurements 94

XIV U1452A/U1452AT/U1451A User’s Guide
Insulation resistance specifications 95
Earth-bond resistance specifications 97
EN61557 specifications 97
Display update rate (approximate) 99

U1452A/U1452AT/U1451A User’s Guide XV
List of Figures
Figure 1-1 Agilent Handheld Meter Logger Software 8
Figure 1-2 Bluetooth adapter connection 9
Figure 1-3 Width dimension 10
Figure 1-4 Height and depth dimensions 11
Figure 1-5 Display screen allocation example 20
Figure 1-6 Connecting the remote switch probe 24
Figure 2-1 Insulation resistance test example 31
Figure 2-2 T/Time operation 34
Figure 2-3 DAR operation 35
Figure 2-4 PI operation 36
Figure 2-5 Earth-bond resistance test example 39
Figure 2-6 AC or DC voltage measurement example 42
Figure 2-7 Definition of frequency 45
Figure 2-8 Resistance measurement example 47
Figure 2-9 Continuity test example 49
Figure 2-10 Capacitance measurement example 51

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U1452A/U1452AT/U1451A User’s Guide XVII
List of Tables
Ta b l e 1- 1 Front panel part descriptions 12
Ta b l e 1- 2 Rear panel parts 13
Ta b l e 1- 3 U1452A/U1452AT/U1451A rotary switch functions 14
Ta b l e 1- 4 U1452A/U1452AT/U1451A keypad functions 16
Ta b l e 1- 5 General annunciators 20
Ta b l e 1- 6 Measurement units display 22
Ta b l e 1- 7 Analog bar graph display 23
Ta b l e 1- 8 Terminal connections for different measuring
functions 24
Ta b l e 1- 9 Power-on options 26
Ta b l e 2- 1 Rotary switch position for insulation resistance
tests 30
Ta b l e 2- 2 Earth-bond resistance test position 38
Ta b l e 2- 3 AC and DC voltage measurement positions 41
Ta b l e 2- 4 Resistance measurement position 46
Ta b l e 2- 5 Continuity test position 48
Ta b l e 2- 6 Capacitance measurement position 50
Ta b l e 3- 1 Limit settling default values 57
Ta b l e 3- 2 Log maximum capacity 59
Ta b l e 3- 3 Event log trigger conditions 61
Ta b l e 4- 1 Setup menu key functions 66
Ta b l e 4- 2 Setup menu item descriptions 68
Ta b l e 5- 1 DC voltage specifications with accuracy of ± (% of
reading + no. of least significant digit) 89
Ta b l e 5- 2 Resistance specifications with accuracy of ± (% of
reading + no. of least significant digit) 90
Ta b l e 5- 3 AC voltage specifications with accuracy of ± (% of
reading + no. of least significant digit) 91
Ta b l e 5- 4 Capacitance specifications with accuracy of ± (% of
reading + no. of least significant digit)[1][2][3] 92
Ta b l e 5- 5 Frequency specifications with accuracy of ± (% of
reading + no. of least significant digit)[1][2] 93
Ta b l e 5- 6 Sensitivity for voltage measurements 94
Ta b l e 5- 7 Insulation resistance specifications with accuracy of ±
(% of reading + no. of least significant digit) 95

XVIII U1452A/U1452AT/U1451A User’s Guide
Ta b l e 5- 8 Earth-bond resistance specifications with accuracy of ±
(% of reading + no. of least significant digit)[1][2] 97
Ta b l e 5- 9 Display update rate (approximate) 99

1
U1452A/U1452AT/U1451A Insulation Tester
User’s Guide
Agilent Technologies
1
Introduction
About This Manual 2
Documentation map 2
Safety notes 2
Preparing Your Tester 3
Check the shipment 3
Install or change the batteries 3
Turn on your tester 6
Select the range 6
Adjust the tilt stand 7
Connect to the Handheld Meter Logger Software 8
Connect the Bluetooth adapter 9
Your Tester in Brief 10
Dimensions 10
Overview 12
Rotary switch 14
Keypad 16
Display screen 20
Input terminals 24
Cleaning Your Tester 25
Additional Features 26
Automatic power-off 26
Hazardous voltage indication 26
Power-on options 26
This chapter teaches you how to set up your tester for the
first time. An introduction to all the features of the tester is
also given.

1 Introduction
About This Manual
2 U1452A/U1452AT/U1451A User’s Guide
About This Manual
Safety notes
The following safety notes are used throughout this manual. More
pertinent safety notes for using this product are located under the “Safety
Symbols” section.
CAUTION
Caution denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, could result in damage to or destruction of the product. Do
not proceed beyond a caution notice until the indicated conditions are fully understood
and met.
WARNING
Warning denotes a hazard. It calls attention to a procedure which, if not correctly
performed or adhered to, could result in injury or loss of life. Do not proceed beyond
a warning note until the indicated conditions are fully understood and met.