AEMC 5100 Manuale utente

5000V Megohmmeters

Models 5000N/5100/5110

USER MANUAL

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Limited Warranty

The Megohmmeters Model 5000N, 5100 and 5110 are warranted to the

owner for a period of 2 years from the date of original purchase

against defects in manufacture. This limited warranty is given by

AEMC® Instruments, not by the distributor from whom it was pur-

chased. This warranty is void if the unit has been tampered with, abused

or if the defect is related to service not performed by AEMC® Instruments.

For full and detailed warranty coverage, please read the Warranty

Coverage Information, which is attached to the Warranty Registration

Card (if enclosed) or is available at www.aemc.com. Please keep the

Warranty Coverage Information with your records.

What AEMC®Instruments will do:

If a malfunction occurs within the warranty period, you may return the

instrument to us for repair, provided we have your warranty registration

information on file or a proof of purchase. AEMC® Instruments will, at its

option, repair or replace the faulty material.

www.aemc.com

Warranty Repairs

What you must do to return an Instrument for Warranty Repair:

First, request a Customer Service Authorization number (CSA#) by phone or

by fax from our Service Department (see address below), then return the

instrument along with the signed CSA Form. Please write the CSA number

on the outside of the shipping container. Return the instrument, postage or

shipment pre-paid to:

Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments

Service Department

15 Faraday Drive • Dover, NH 03820 USA

Tel: (800) 945-2362 (Ext. 360)

(603) 749-6434 (Ext. 360)

Fax: (603) 742-2346 or (603) 749-6309

Caution: To protect yourself against in-transit loss, we recommend you

insure your returned material.

Note: You must obtain a CSA# before returning any instrument.

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Table of Contents

Warning ......................................................................................4

International Electrical Symbols .................................................4

Megohmmeter Model 5000N....................................................5

Receiving Your Shipment.....................................................5

Ordering Information ............................................................5

Accessories And Replacement Parts...................................5

Description ...........................................................................6

Specifications .......................................................................7

Control & Connector Identification .......................................9

Battery Replacement..........................................................10

AC Supply Module .............................................................10

Megohmmeter Model 5100/5110............................................11

Receiving Your Shipment...................................................11

Ordering Information ..........................................................11

Accessories And Replacement Parts.................................11

Description .........................................................................12

Specifications - Model 5100 ...............................................13

Specifications - Model 5110 ...............................................15

Control & Connector Identification .....................................17

AC Supply Module .............................................................18

Disassembly.......................................................................19

Using the Clock/Timer........................................................20

Operation: Models 5000N, 5100 & 5110................................22

The Analog Scale...............................................................22

Preliminary Check ..............................................................23

How to use the Push-To-Test Button.................................23

Utilizing the Guard Terminal...............................................24

Voltage Measurements (Safety Check) .............................25

Audible Signal ....................................................................26

Precautions when making DC Insulation Tests .................27

Insulation Measurement - Connections .............................27

Insulation Resistance Measurements on Motors...............30

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Understanding Insulation Testing ........................................32

Ratio Testing ......................................................................33

Types of Tests....................................................................34

Spot Reading Test .............................................................34

Polarization Index...............................................................35

Step Voltage Test...............................................................36

The Effects of Temperature ...............................................37

Interpreting the Results ......................................................38

Maintenance............................................................................39

Warning..............................................................................39

Cleaning .............................................................................39

Repair And Calibration...........................................................40

Technical And Sales Assistance...........................................40

Megohmmeter Models 5000N/5100/5110

- 4 -

Warning

These safety warnings are provided to ensure the safety of

personnel and proper operation of the instrument.

WARNING: HIGH VOLTAGE PRESENT

•Do not attempt to perform any tests with these instruments

until you have read the instruction manual.

•Safety is the responsibility of the operator!

•Tests are to be carried out only on non-energized circuits!

Check for live circuits before making resistance measure-

ments (safety check).

•These Megohmmeters are sources of high voltage, as is the

sample connected to them. All persons performing or

assisting in the tests must employ all safety precautions to

prevent electrical shock to themselves and to others.

•AEMC® considers the use of rubber gloves to be an excellent

safety practice even if the equipment is properly operated and

correctly grounded.

•When testing capacitance samples, make sure that they have

been properly discharged and that they are safe to touch.

Dielectric insulation samples should be short-circuited for at

least five times the amount of time they were energized.

•Megohmmeters should never be used in an explosive

environment.

•Use the leads supplied with the megohmmeters. If they are

defective or worn, replace before testing.

International Electrical Symbols

This symbol signifies that the instrument is protected by double

or reinforced insulation. Use only specified replacement parts

when servicing the instrument.

This symbol signifies CAUTION! and requests that the user refer

to the user manual before using the instrument.

Risk of electric shock. The voltage at the parts marked with this

symbol may be dangerous.

Megohmmeter Models 5000N/5100/5110

- 5 -

MEGOHMMETER MODEL 5000N

Receiving Your Shipment

Upon receiving your shipment, make sure that the contents are

consistent with the packing list. Notify your distributor of any missing

items. If the equipment appears to be damaged, file a claim immediately

with the carrier and notify your distributor at once, giving a detailed

description of any damage.

Ordering Information

Megohmmeter Model 5000N................................................ Cat. #186.100

Includes megohmmeter, eight 1.5V “AA” batteries, one shielded lead,

two color-coded safety leads, insulated alligator clip, test probe

batteries,spare fuse, carrying case and user manual.

Accessories and Replacement Parts

AC power supply module with line cord and plug

for switch-selectable 110/220VAC at 47 to 400Hz................ Cat. #100.142

Protective rubber case with handle, safety yellow ............... Cat. #2980.02

Fuse, set of five, 0.1A slow blow

for AC supply module...........................................................Cat. #100.438

Fuse, set of one, 0.3A ..........................................................Cat. #100.429

Replacement lead, (green and blue clips) ........................... Cat. #1017.23

7-pin shielded lead, 10 ft

for Models 1000N/5000N/5100 ............................................ Cat. #2950.10

Probe and clip for Model 1000N/5000N............................... Cat. #100.404

Megohmmeter Models 5000N/5100/5110

- 6 -

Description

AEMC® Instruments Model 5000N (Cat. #186.100) is a portable, multi-

range, high-sensitivity megohmmeter capable of measuring a wide range

of insulation resistances from 10 kilohms to 3000 gigohms (3,000,000

megohms). The Model 5000N has four test voltages of 500, 1000, 2500,

and 5000 volts. Each test voltage setting has two overlapping resistance

ranges of 30MΩ to 30,000MΩ and 3GΩ to 3000GΩ on a long (9.4") dial.

In addition, the Model 5000N has a unique low insulation test range of 10

to 30,000kΩ with a constant current of 33µA (maximum voltage of

1300VDC), which is useful for testing old or flooded installations. A

voltmeter (safety check) with a range of 0 to 600 volts is standard.

The Model 5000N may be powered by either AC or DC. DC power is

supplied by eight 1.5V alkaline “AA” batteries. As an option, an AC line

supply module and cord for 110/220VAC at 47 to 400Hz can be inserted

in the battery compartment.

An audible signal, consisting of approximately ten beeps per minute, is

present when the megohmmeter is ON, and serves as a time base for

tests of long duration. A green LED, when ON, indicates that the

batteries are good when the push-to-test button is depressed. It also

serves as a warning light when the instrument is in use, indicating that

the selected test voltage is present at the terminals.

Megohmmeter Models 5000N/5100/5110

- 7 -

Specifications

INSULATION TESTS

DC Test Voltages:

500, 1000, 2500, 5000V

Megohm Ranges:

For each test voltage two direct reading ranges:

30 to 30,000MΩ

3 to 3000GΩ

(3000 to 3,000,000MΩ)

Short Circuit Current: 3mA (max)

Accuracy: 5% of reading typical

Charging Time:

MΩ range: 0.3 seconds/µF

GΩ range: 3 seconds/µF

Discharging Time:

Automatic discharge when test button is released; 0.1 seconds/µF

Scale:

Two large overlapping scales: 4.7" (119 mm) for each range

Test Voltage Generation:

Solid state circuitry generating rated test voltage across the full range

RESISTANCE TESTS

Test Current: Constant 33 µA DC

Kilohm Range: 10 to 30,000kΩ (30MΩ)

Maximum Test Voltage: 1300VDC

Accuracy: 5% of reading typical

VOLTAGE TESTS (SAFETY CHECK)

Voltage Range: 0 to 600VAC/DC

Accuracy: 3% of full scale

Megohmmeter Models 5000N/5100/5110

- 8 -

GENERAL SPECIFICATIONS

Audible Test Signal:

Ten beeps per minute

Power Supply:

Eight 1.5V “AA” alkaline batteries (NEDA 15A). Typical battery life: 350

one-minute tests; power consumed only when test button is depressed;

built-in battery check by green LED.

Option:

110/220V selectable

47 to 400Hz AC supply module

Dielectric Test: 4000VAC, 60Hz, 1 minute

Fuse Protection:

0.3A high interrupting capacity fuse between line and guard terminals

Meter Movement: Rugged taut band suspension

Dimensions: 7.7 x 5.2 x 3.75" (196 x 132 x 95mm)

Weight: 2.2 lbs (1 kg)

Temperature Range: 23° to 122°F (-5° to +50°C)

Case: High impact gray polycarbonate

Terminals:

Color-coded safety terminals; guard terminal eliminates surface

leakage errors

Electromagnetic Compatibility:

CEI 801-2: Electrical Discharge

Class II

CEI 801-3: Magnetic Fields 3 V/m

CEI 801-4: Rapid Transients Class II

CEI 801-5: Electrical Shock (5KV 2 Joules)

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