Keysight U1452AT Manual de usuario

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

[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.

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

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).

Press [Test] or [Lock]

again to unlock and

stop the test.

Press once

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