Keysight U1452AT Manuale utente
Keysight U1452A/U1452AT/
U1451A Insulation Tester
Quick Start Guide
U1452A/U1452AT/U1451A Insulation Tester
Standard accessories included in your purchase
U1452A/U1452AT/U1451A Quick Start Guide 1
Standard accessories included in your purchase
The following accessories are shipped standard with the
U1452A, U1452AT, and U1451A testers:
✔Hard carrying case
✔Alligator clips (red and black)
✔Test leads (red and black)
✔19 mm probes (red and black)
✔4 mm probes (red and black)
✔IR to USB cable
✔Four 1.5 V AA alkaline batteries
✔Printed copy of the U1452A/U1452AT/U1451A
Quick Start Guide (this document)
Model U1452A also includes the following accessories:
✔Remote switch probe and adapter
✔U1117A IR to Bluetooth adapter
✔Printed copy of the U1117A Operating Instructions
If any item is missing or damaged, keep the shipping materials
and contact the nearest Keysight Sales Office.
NOTE
The descriptions and instructions in this guide apply to the
U1452A, U1452AT, and U1451A Insulation Tester.
Model U1452A appears in all illustrations. The word tester is
used to represent all models.
All related documents and software are available for download
at www.keysight.com/find/hhTechLib.
U1452A/U1452AT/U1451A Insulation Tester
Install or Change the Batteries
2 U1452A/U1452AT/U1451A Quick Start Guide
Install or Change the Batteries
The tester is powered by four 1.5 V AA alkaline batteries
(included in the shipment).
Before installing or changing the batteries, pull from a corner
and stretch the orange rubber holster to remove it.
Turn On the Tester
Turn the rotary switch
from the position
to any other position
to begin making
measurements.
1 2
3 4
U1452A/U1452AT/U1451A Insulation Tester
The Tester at a Glance
U1452A/U1452AT/U1451A Quick Start Guide 3
The Tester at a Glance
Red LED indicator
Keypad
Rotary switch
Fuse access
Tilt stand
Display screen
Input terminals
Test lead/probe holders
IR communication port
(Under the orange rubber holster)
Battery access
(Under the orange rubber holster)
U1452A/U1452AT/U1451A Insulation Tester
Using the Rotary Switch
4 U1452A/U1452AT/U1451A Quick Start Guide
Using the Rotary Switch
NOTE
Press [T DAR PI]to select the alternate measurement func-
tion(s) or test methods for insulation resistance tests.
Legend Measurement function Model
U1452A U1452AT U1451A
50 V insulation resistance test,
T, DAR, PI[1] ✔✔ -
100 V insulation resistance test,
T, DAR, PI[1] ✔✔ -
250 V insulation resistance test,
T, DAR, PI[1] ✔-✔
500 V insulation resistance test,
T, DAR, PI[1] ✔-✔
1000 V insulation resistance test,
T, DAR, PI[1] ✔-✔
Earth-bond resistance, T✔✔✔
Resistance, Continuity ✔✔✔
Capacitance ✔✔✔
Auto (V), DC V, AC V ✔✔✔
[1] DAR and PI tests for models U1452A and U1452AT only.
WARNING
Remove the test leads from the measuring source or target
before changing the rotary switch position.
Refer to the U1452A/U1452AT/U1451A User’s Guide for a
complete list and description of all rotary switch labels.
U1452A/U1452AT/U1451A Insulation Tester
Using the Keypad
U1452A/U1452AT/U1451A Quick Start Guide 5
Using the Keypad
Legend Key response when pressed for:
Less than 1 second More than 1 second
IR Test: Initiates an insulation test[1] as long as [Te st]is
held ( is shown) — the tester sources (outputs) a high
voltage and measures insulation resistance
EBR Test: Initiates an earth-bond resistance test[2] as long
as [Test]is held ( is shown)
Trig Hold: Freezes the present
reading in the display[3]
Auto Hold: Automatically
freezes the present read-
ing once the reading is
stable[3]
Lock: Locks the insulation test
or earth-bond resistance test[4]
View (U1452A and
U1452AT): Enters the Log
review menu
Hz: Displays the frequency
(when the rotary switch is in
the V position)
Esc: Discards the changes
made in the Setup menu
Selects the alternate measure-
ment function(s)
Log (U1452A and
U1452AT): Starts the data
Log
T/Time: Configures the tester
for a timed test[4][5]
DAR (U1452A and U1452AT):
Configures the tester for a
dielectric absorption ratio
test[1][5]
PI (U1452A and U1452AT):
Configures the tester for a
polarization index test[1][5]
Limit: Enables Limit compari-
son Smooth: Enables Smooth
Range: Sets a manual range
Auto: Enables autorang-
ing
Leak (U1452A and U1452AT):
Displays the leakage current[4]
U1452A/U1452AT/U1451A Insulation Tester
Using the Input Terminals
6 U1452A/U1452AT/U1451A Quick Start Guide
Using the Input Terminals
Null: Enables Null -
:Enable or disable the LCD
backlight
Setup: Enters the Setup
menu
[1] When the rotary switch is in one of the Ω Mega position.
[2] When the rotary switch is in the ΩEB position.
[3] When the rotary switch is NOT in one of the Ω Mega or the ΩEB position.
[4] When the rotary switch is in one of the Ω Mega or the ΩEB position.
[5] Press [Tes t] to start the test.
WARNING
To avoid damaging this device, do not exceed the input limit.
Rotary position Input terminals Overload protection
1000 Vrms
1000 Vrms for
short circuit <0.3 A
440 mA/1000 V, 30 kA
fast-acting fuse
Legend Key response when pressed for:
Less than 1 second More than 1 second
U1452A/U1452AT/U1451A Insulation Tester
Insulation Resistance (IR) Test
U1452A/U1452AT/U1451A Quick Start Guide 7
Insulation Resistance (IR) Test
Ensure that the device-under-test (DUT) is de-energized before
performing any resistance measurement.
The tester automatically detects if the circuit is energized. If
the external voltage is detected to be greater than 30 V, the
test is inhibited and the voltage hazard symbol ( ) is shown on
the display.
CAUTIONCAUTION
DO NOT perform insulation resistance test in distribution sys-
tems with voltages higher than 600 V.
3
2
1
Select a
test voltage
Remote
Switch
Probe
U1452A/U1452AT/U1451A Insulation Tester
Insulation Resistance (IR) Test
8 U1452A/U1452AT/U1451A Quick Start Guide
Using the Remote Switch Probe
Locking the Test for IR/EBR Tests
4
Test will continue until
[Test ] is released.
Hold
NOTE
When an insulation test is in progress, the red LED indicator at
the top of the tester will blink every 2 seconds (if the Limit
function is not enabled).
=
2
1
Press [Test] or [Lock]
again to unlock and
stop the test.
Press once
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