Cal Test Electronics CT2700A Bedienungsanleitung

User Manual

CT2700A

40 kV High-Voltage DMM Probe

2CT2700A 40 kV High-Voltage DMM Probe User Manual

Notices

Unauthorized duplication of this documentation material is strictly prohibited. Users are permitted to

duplicate and distribute this documentation for internal educational purposes only. Cal Test Electronics is

governed by United States and international copywrite laws.

Made in Taiwan

User Manual Part Number

451-103-001

Available in electronic format only

Published by:

Cal Test Electronics, Inc.

22820 Savi Ranch Parkway

Yorba Linda, CA 92887 USA

Warranty

LIMITED ONE-YEAR WARRANTY

Cal Test Electronics, Inc warrants these products to be free from defective material or workmanship for a

period of 1 year from the date of original purchase. Under this warranty, Cal Test Electronics, Inc is lim-

ited to repairing this product when returned to the factory, shipping charges prepaid, within the warranty

period.

Units returned to Cal Test Electronics, Inc that have been subject to abuse, misuse, damage, or accident,

or have been connected, installed, or adjusted contrary to the instructions furnished by Cal Test Electron-

ics, Inc, or that have been repaired by unauthorized persons, will not be covered by this warranty.

Cal Test Electronics, Inc reserves the right to discontinue models, change speciﬁcations, price, or design

of this device at any time without notice and without incurring any obligation whatsoever.

The purchaser agrees to assume all liabilities for any damages and/or bodily injury which may result from

the use or misuse of this device by the purchaser, his employees, or agents.

THIS WARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS OR WARRANTIES EXPRESSED OR

IMPLIED AND NO AGENT OR REPRESENTATIVE OF CAL TEST ELECTRONICS, INC IS AUTHORIZED

TO ASSUME ANY OTHER OBLIGATION IN CONNECTION WITH THE SALE AND PURCHASE OF THIS

DEVICE.

3CT2700A 40 kV High-Voltage DMM Probe User Manual

Contents

Notices........................................................2

User Manual Part Number .........................................2

Warranty .......................................................2

Contents ......................................................3

Compliance Information...........................................4

Safety .........................................................4

EC Declaration of Conformity - Low Voltage .........................4

Environmental...................................................4

Restriction of Hazardous Substances (RoHS 2) ......................4

Terms & Symbols................................................5

Terms .........................................................5

Symbols .......................................................5

Safety Information ...............................................6

Usage Precautions...............................................6

IEC Measurement Category & Pollution Degree Deﬁnitons................7

Introduction ....................................................8

Overview.......................................................8

Supplied Accessories ............................................8

Using Accessories ...............................................9

Round Tip & Hook Tip...........................................9

Flat Bar Tip ...................................................9

Measurement Instructions .........................................10

Steps .........................................................10

Speciﬁcations ..................................................11

Cleaning.......................................................12

China RoHS 2 ..................................................13

Hazardous Substances Disclosure Table .............................13

4CT2700A 40 kV High-Voltage DMM Probe User Manual

Compliance Information

Safety

EC Declaration of Conformity - Low Voltage

Compliance was demonstrated to the following speciﬁcation as listed in the Oﬃcial Journal of the Europe-

an Communities: Low Voltage Directive: 2014/35/EU.

EN 61010-031:2015 Ed 2.0. Safety requirements for electrical equipment for measure-

ment, control and laboratory use - Part 031: Safety requirements for hand-held probe

assemblies for electrical measurement and test.

Environmental

Restriction of Hazardous Substances (RoHS 2)

The product and its accessories conform to the Directive 2011/65/EU (RoHS 2) on the restriction of the

use of certain hazardous substances in electrical and electronic equipment, inclusive of any modiﬁcation

and addendum to said Directive.

EN ISO 63000:2018 Technical documentation for the assessment of electrical and elec-

tronic products with respect to the restriction of hazardous substances.

China RoHS 2 refers to the Ministry of Industry and Information Technology Order No.

32, eﬀective July 1, 2015. See “Hazardous Substances Disclosure Table” on page 13.

Product End-of-Life Handling

The equipment may contain substances that could be harmful to the environment or human health if

improperly handled at the product’s end of life. To avoid release of such substances into the environment

and to reduce the use of natural resources, we encourage you to recycle this product to an appropriate

system that will ensure that most of the materials are reused or recycled appropriately.

This product is subject to Directive 2012/19/EU of the European Parliament and the

Council of the European Union on waste electrical and electronic equipment (WEEE),

and in jurisdictions adopting that Directive, is marked as being put on the market after

August 13, 2005, and should not be disposed of as unsorted municipal waste. Please

utilize your local WEEE collection facilities in the disposition of this product.

5CT2700A 40 kV High-Voltage DMM Probe User Manual

Terms & Symbols

The following terms, symbols, and deﬁnitions, individually or combination may appear on the product or in

this user manual.

Terms

A caution statement calls attention to an operating procedure, practice, or condition,

which, if not followed correctly, could result in damage to or destruction of parts or the

entire product.

A warning statement calls attention to an operating procedure, practice, or condition,

which, if not followed correctly, could result in injury or death to personnel.

A note statement calls attention to an operating procedure, practice, or condition, which,

should be noted before proceeding.

Symbols

CAUTION – Statements or instructions that must be consulted in order to ﬁnd

out the nature of the potential hazard and any actions which must be taken.

WARNING - HIGH VOLTAGE - possibility of electric shock.

The Conformitè Europëenne (CE) Mark is the European Union’s (EU) mandatory

conformity marking for regulating the goods sold within the European Economic

Area (EEA).

CAUTION

WARNING

NOTE

6CT2700A 40 kV High-Voltage DMM Probe User Manual

Safety Information

Usage Precautions

The high-voltage probe is designed to prevent accidental shock to the operator when

properly used. This operating note must be read and understood prior to using the

probe. Improper procedure or incorrect analysis of the measurement situation can result

in serious shock.

This high-voltage probe must only be used by personnel who are trained, experienced,

or otherwise qualiﬁed to recognize hazardous situations and who are trained to the safe-

ty precautions that are necessary to avoid possible injury when using such a device.

This high-voltage probe is designed for use with Measurement Category other than II, III

and IV only (formally CAT I). Do not use the probe for measurements performed on cir-

cuits deﬁned by any other measurement category or transient overvoltages of more than

1500 V. Refer to IEC Measurement Category Deﬁnitions on page 7 for a deﬁnition of

measurement categories.

The ground lead is critical to the safe operation of the probe. Failure to make this

connection when making high-voltage measurements may result in personal injury or

damage to the probe or oscilloscope. This connection must always be made BEFORE

the probe tip comes in contact with the high voltage and must not be removed until the

probe tip has been removed from the high-voltage source.

Hands, shoes, ﬂoor, and work bench must be dry. Avoid making measurements under

humidity, dampness, or other environmental conditions that might aﬀect safety.

To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do

not touch exposed connections and components when power is present.

Do not work alone when working with high-Voltage Circuits.

The probe is designed to be used in oﬃce-type indoor environments.

• Do not operate in the presence of noxious, corrosive, ﬂammable fumes, gases, vapors,

chemicals, or ﬁnely-divided particulates.

• Hands, shoes, ﬂoor, and workbench must be dry. Avoid making measurements under

humid, damp, or other environmental conditions that might eﬀect the safety of the

measurement situation.

• The probe body should be kept clean and free of any conductive contamination. Refer

to the section on cleaning.

To reduce the risk of shock or ﬁre:

• Connect the probe to the oscilloscope before connecting probe to the circuit under

test. Disconnect the probe input from the circuit before disconnecting the probe from

the oscilloscope.

• Do not exceed the voltage rating category rating of the probe. Use only accessories

provided with probe.

WARNING

7CT2700A 40 kV High-Voltage DMM Probe User Manual

• Keep ﬁnger behind the ﬁnger guard of the probe body.

• For your own safety, inspect the probe for cracks and frayed or broken leads before

each use. If defects are noted, DO NOT use the probe.

• Keep the probe’s output cables away from the circuit under test, as they are not

intended to be in contact with these circuits.

It is advisable to turn the high-voltage source oﬀ before connecting or disconnecting the

probe.

Do not attempt to take measurements where the source and the test instrument chassis

or return lead is not properly grounded.

Do not connect the ground clip to the high voltage source or the probe tip to the ground

for any reason.

IEC Measurement Category & Pollution Degree Deﬁnitons

Measurment Category (CAT) - classiﬁcation of testing and measuring circuits according to the types of

mains circuits to which they are intended to be connected.

Measurment Category other than II, III, or IV: circuits that are not directly connected to

the mains supply.

Measurment Category II (CAT II): test and measuring circuits connected directly to ultilz-

ation points (socket outlets and similar prints) of the low-voltage mains installation..

Measurment Category III (CAT III): test and measuring circuits connected to the distribu-

tion part of a building’s low-voltage mains installation.

Measurment Category IV (CAT IV): test and measuring circuits connected at the source

of the building’s low-voltage mains installation.

Pollution - addition of foreign matter, solid, liquid, or gaseous (ionized gases) that may produce a reduc-

tion of dielectric strength or surface resistivity.

Pollution Degree 2 (P2)- only non-conductive pollution occurs except that occasionally a

temporary conductivity caused by condensation is expected.

WARNING

8CT2700A 40 kV High-Voltage DMM Probe User Manual

Introduction

Overview

The Cal Test CT2700A 40 kV High-Voltage Digitial Multimeter (DMM) probe can be used with anlalog or

digital multimeters (DMMs) which accept 4 mm sheathed banana plugs and have an input resistance of

10 MΩ (±1%). The CT2700A is a 1000:1 divider which extends the voltage meansurement capability to 28

kV ACrms.

Features of the probe:

• Up to 40 kV (DC + ACpeak) or 28 kV ACrms

• 300 Hz bandwidth (-3dB)

• ±3% accuracy (20 kV to 40 kV)

• IEC/EN 61010-031

Figure 1 Probe and Supplied Accessories

Supplied Accessories

Table 1 CT4432 Accessory Replacements

Accessory Model No. Quantity

Round Tip CT2960A 1

Hook Tip CT2961A 1

Flat Bar Tip CT2962A 1

4 mm Sheathed Banana

Plug Input Leads, Black

& Red

Round Tip

Hook Tip

Flat Bar Tip

Alligator Clip Ground

Lead (Fixed)

M5 Threaded

Stud

9CT2700A 40 kV High-Voltage DMM Probe User Manual

Using Accessories

Round Tip & Hook Tip

Thread either the Round Tip or the Hook Tip onto the probe’s M5 tip stud and securely hand-tighten.

Figure 2 Attaching the Round and Hook Tips

Flat Bar Tip

The end of the Flat Bar Tip can be clamped to the device-under-test (DUT). To secure the Flat Bar Tip to

the probe, use the supplied M5 ﬂange nut (8 mm wrench or nut driver) as show in Figure 3.

Figure 3 Attaching the Flat Bar Tip

10 CT2700A 40 kV High-Voltage DMM Probe User Manual

Measurement Instructions

Before connecting the probe for your measurement, read all the warnings in this section and all of the

warnings in the section “Safety Information” on page 6.

Steps

1. Whenever possible, turn oﬀ the high-voltage source before making any connections.

2. Connect the alligator ground clip lead to a good earth ground or reliable chassis ground.

3. Connect the probe’s 4 mm sheathed banana plugs to the DMM’s input jacks; Red to voltage jack and

Black to COM jack.

4. On the DMM, select the voltage range.

Do not use autoranging.

Before turning on the high voltage source, make sure that no part of the person holding

the probe is touching the device under test.

5. After conﬁrming that the probe operator is not touching the device under test, turn on the high-volt-

age source.

6. Measure the voltage readout on the DMM.

Remember the actual voltage is 1000 times greater than the DMM reading.

7. Turn oﬀ the high voltage source.

8. Disconnect the probe tip from the high-voltage source.

9. Disconnect the probe’s ground clip lead.

Disconnect the probe tip from the high voltage source BEFORE disconnecting the alliga-

tor ground clip lead.

CAUTION

WARNING

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