Agilent Technologies U1461A User manual

Agilent Technologies

Standard accessories included in your purchase

The following accessories are shipped standard with the

U1461A and U1453A 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)

✔Remote switch probe and adapter

✔Four 1.5 V AA lithium batteries

✔IR to USB cable

✔U1117A IR to Bluetooth adapter

✔Printed copy of the U1117A Operating Instructions

✔Printed copy of the U1461A/U1453A Quick Start Guide

(this document)

Model U1461A also includes the following accessories:

✔Thermocouple adapter (J/K-Type)

✔Thermocouple bead (J-Type)

✔Thermocouple bead (K-Type)

If any item is missing or damaged, keep the shipping materials

and contact the nearest Agilent Sales Office.

NOTE

The descriptions and instructions in this guide apply to the

U1461A Insulation Multimeter and U1453A Insulation Tester.

Model U1461A appears in all illustrations. The word tester is

used to represent both models.

All related documents and software are available for download

at www.agilent.com/find/hhTechLib.

Quick Start Guide

Agilent U1461A Insulation

Multimeter/U1453A

Insulation Tester

U1461A Insulation Multimeter/U1453A Insulation Tester

Install or Change the Batteries

2 U1461A/U1453A Quick Start Guide

Install or Change the Batteries

The tester is powered by four 1.5 V AA lithium 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

U1461A Insulation Multimeter/U1453A Insulation Tester

The Tester at a Glance

U1461A/U1453A Quick Start Guide 3

The Tester at a Glance

Vsense/Red LED indicator

Keypad

Rotary switch

Fuse access

Tilt stand

Display screen

Input terminals

Test lead/probe holders

IR communication port

(Vsense for model U1461A)

(Under the orange rubber holster)

Battery access

(Under the orange rubber holster)

U1461A Insulation Multimeter/U1453A Insulation Tester

Using the Rotary Switch

4 U1461A/U1453A 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 U1461A U1453A

50 V insulation resistance, T, DAR, PI ✔✔

100 V insulation resistance, T, DAR, PI ✔✔

250 V insulation resistance, T, DAR, PI ✔✔

500 V insulation resistance, T, DAR, PI ✔✔

1000 V insulation resistance, T, DAR, PI ✔✔

Earth-bond resistance, T✔✔

Resistance, Continuity, Diode, Capacitance ✔✔

AC V, AC V with LPF ✔-

AC V - ✔

Auto (V), DC V, AC V ✔✔

Auto (mV), DC mV, AC mV, Temperature ✔-

Auto (μA mA), DC μA mA, AC μA mA ✔-

WARNING

Remove the test leads from the measuring source or target

before changing the rotary switch position.

Refer to the U1461A/U1453A User’s Guide for a complete list

and description of all rotary switch labels.

U1461A Insulation Multimeter/U1453A Insulation Tester

Using the Keypad

U1461A/U1453A 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 [Tes t]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: Enters the Log

review menu

Hz: Displays the frequency

(when the rotary switch is in

the V, mV (U1461A), or

μA mA (U1461A) position)

Esc: Discards the changes

made in the Setup menu

Selects the alternate measure-

ment function(s)

Log: Starts the data Log

T: Configures the tester for a

timed test[4][5]

DAR: Configures the tester for

a dielectric absorption ratio

test[1][5]

PI: Configures the tester for a

polarization index test[1][5]

Limit: Enables Limit compari-

son Max Min: Enables Max

Min recording[6]

Trip: Configures the tester for

Leakage Current, Scan, or

Ramp Trip tests[4][5]

Range: Sets a manual range Auto: Enables autorang-

ing

Leak: Displays the leakage cur-

rent[4]

U1461A Insulation Multimeter/U1453A Insulation Tester

Using the Input Terminals

6 U1461A/U1453A Quick Start Guide

Using the Input Terminals

Null: Enables Null

Vsense (U1461A):

Enables the non-contact

voltage detector

:Increases or decreases the

OLED brightness — this option

must first be enabled in the

Setup

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.

[6] Max Min is disabled when Trip is enabled.

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

U1461A Insulation Multimeter/U1453A Insulation Tester

Insulation Resistance (IR) Test

U1461A/U1453A 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

U1461A Insulation Multimeter/U1453A Insulation Tester

Insulation Resistance (IR) Test

8 U1461A/U1453A 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

U1461A Insulation Multimeter/U1453A Insulation Tester

Insulation Resistance (IR) Test

U1461A/U1453A Quick Start Guide 9

Performing PI/DAR/T for IR Tests

Polarization Index (PI) = IR 10 minutes/IR 1 minute

Dielectric Absorption Ratio (DAR) = IR 60 seconds/IR 30 seconds

(default; can be changed to IR 60 seconds/IR 15 seconds in Setup)

Timed (T) for IR and EBR = IR 1 minute (default; can be changed

in Setup)

Viewing Leakage Current

NOTE

Error is shown on the display if the IR is greater than the maxi-

mum range or less than 0.001 MΩafter t1/t15/t30; if the test

is interrupted by the user; or if the tester’s battery is low.

U1461A Insulation Multimeter/U1453A Insulation Tester

Insulation Resistance (IR) Test

10 U1461A/U1453A Quick Start Guide

Performing Leakage Current/Scan/Ramp Trip Tests

Use the Leakage Current Trip Test, Scan Trip Test, and Ramp

Trip Test to test MOVs (Metal Oxide Varistors), gas discharge

tubes, voltage arresters, or sparking gaps.

The voltage source will be stopped when the current is greater

than the trip current you set in the Setup.

NOTE

For more information on the Leakage Current Trip Test, Scan

Trip Test, and Ramp Trip Test, refer to the respective sections in

the U1461A/U1453A User’s Guide.

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