Fluke 80K-40 Manual de usuario

PN 481978 January 1978 Rev. 10, 7/17

Specifications are subject to change without notification.

All product names are trademarks of their respective companies.

80K-40/80K-6

High Voltage Probe

Instructions

The 80K-40/80K-6 High Voltage Probe (the probe or Product) is a high

voltage accessory probe that extends the voltage measurements of an

ac/dc voltmeter:

• 80K-40 up to 40 000 volts peak ac or dc

• 80K-6 up to 6000 volts peak ac or dc

The probe takes measurements on energy-limited circuits within the

equipment. Examples include the high voltage in televisions or photo copy

machines. A 1000:1 voltage divider provides the probes with a high input

impedance that minimizes circuit loading and optimizes the measurement

accuracy. The molded plastic body houses the divider and protects the

user from hazardous voltage.

How to Contact Fluke

To contact Fluke, call one of the following telephone numbers:

• Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)

• Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)

• Canada: 1-800-36-FLUKE (1-800-363-5853)

• Europe: +31 402-675-200

• Japan: +81-3-6714-3114

• Singapore: +65-6799-5566

• China: +86-400-921-0835

• Anywhere in the world: +1-425-446-5500

Or, visit Fluke's website at www.fluke.com.

To register your product, visit http://register.fluke.com.

To view, print, or download the latest manual supplement, visit

http://us.fluke.com/usen/support/manuals.

Safety Information

A Warning identifies conditions and procedures that are dangerous to the

user. A Caution identifies conditions and procedures that can cause

damage to the Product or the equipment under test.

XW Warning

To prevent possible electrical shock, fire, or personal injury:

• Read all safety information before you use the Product.

• Do not use the Product around explosive gas, vapor, or in

damp or wet environments.

• Examine the case before you use the Product. Look for

cracks or missing plastic.

• Do not use test leads if they are damaged. Examine the test

leads for damaged insulation and measure a known voltage.

• Do not alter the Product and use only as specified, or the

protection supplied by the Product can be compromised.

• When you do a measurement, never make body contact with

the probe tip or red portion of the Product. Always hold the

Product by its black handle.

• Do not use this probe to measure high voltages on power

distribution systems.

• Connect the protective earth alligator clip lead to a known

good earth ground.

• Do not apply more than the rated voltage between the

terminals or between each terminal and earth ground.

• Have an approved technician repair the Product.

• Do not use the Product if it is altered or damaged.

• Disable the Product if it is damaged.

Symbols

Symbol Definition

XWARNING. HAZARDOUS VOLTAGE. Risk of electric

shock.

WWARNING - RISK OF DANGER. Consult user

documentation.

TDouble Insulated

Earth

PConforms to European Union directives.

)Certified by CSA Group to North American safety

standards.

This product complies with the WEEE Directive marking

requirements. The affixed label indicates that you must

not discard this electrical/electronic product in domestic

household waste. Product Category: With reference to

the equipment types in the WEEE Directive Annex I,

this product is classed as category 9 "Monitoring and

Control Instrumentation" product. Do not dispose of this

product as unsorted municipal waste.

Operation

Use the probe as follows:

1. Inspect the probe.

2. Connect the ground lead of the probe to protective earth ground.

3. Connect the probe cable to a compatible voltmeter. Use a shunt resistor

if required.

4. Select the 10 MΩvoltage range (1 V reading for 1000 V probe input).

5. Hold the probe by the black handle and connect the probe tip to the

circuit.

6. Observe the voltmeter reading.

Probe tip

Probe body

Multimeter or voltmeter

Plug

GND tab

Protective earth ground lead clip

MIN MAX RANGE

REL Hz %

AutoHOLD

Peak MIN MAX

4½ DIGITS

1 Second

°C/°F

OFF

AmA COM V

400mA

FUSED

10A MAX

FUSED

TRUE RMS MULTIMETER

87V

LOLO

Theory Of Operation

The probe is a passive attenuator. See Table 1. High input impedance,

accuracy, and stability characteristics are achieved with thick-film

resistors. When the probe is connected to a voltmeter with a 10 MΩinput

resistance the probe becomes an accurate 1000:1 divider. This divider

depends on a ground lead to complete the low side of the circuit path. The

connection must always be secure before you do the voltage

measurement. Otherwise, instrument damage or a shock hazard can

result.

Table 1. Schematic Diagram

Voltmeter Compatibility

Accuracy of the meter is not included in the accuracy of the probe and

must be added to the probe accuracy to determine system accuracy.

The probe is mechanically compatible with any ac or dc voltmeter or

multimeter that accepts a standard double banana connector (spaced

0.75" [19 mm]) with standard plugs (0.160" [4 mm]).

The probe is electrically compatible with any ac or dc voltmeter or

multimeter that has an input impedance of:

• 10 MΩ±1 % for 80K-40

• 10 MΩ±10 % for 80K-6

Voltmeters or multimeters with other input impedances require the use of

an external shunt or a correction factor to obtain an accurate

measurement. Higher impedance voltmeters or multimeters should be

equipped with a shunt, and lower impedance voltmeters or multimeters

should be assigned correction factors.

Probe Resistor

RA RB

80K-40 999 MΩ1.11 MΩ

80K-6 75 MΩ75 kΩ

Probe Tip

(Dual Banana Plug)

Protective

Earth Lead

RB 10 MΩ

(Voltmeter)

Use this formula to determine the value of an external shunt resistor

(meter impedance >10 MΩ):

Where: Rs = Shunt resistance in MΩ

Rm = Voltmeter input impedance in ΜΩ (>10 MΩ)

Example: If Rm = 20 MΩ,

Use this formula to calculate a correction factor (meter impedance

<10 MΩ):

Where: Cf = Correction factor (multiplier for meter reading)

Rm = Voltmeter input impedance in MΩ

Example: If Rm = 1 MΩ,

A meter reading of 0.526 volts represents an input of:

0.526 x 1.901 = 1 or 1 kV

Circuit Loading

The probe represents a load to the circuit:

• 1000 MΩ, or 1 μA/1 kV, for 80K-40

• 75 MΩ, or 13 μA/1 kV, for 80K-6

Maintenance

The probe has no user-serviceable parts.

Use a soft cloth dampened with distilled water to clean the probe. Never

use solvents of abrasive cleaners. Make sure the probes are dry before

use.

Performance Test

Verify the accuracy of the probe with a voltage source measurement:

• 25 kV dc ±0.25 % for 80K-40

• 5 kV dc ±0.25 % for 80K-6

When used with a compatible dc voltmeter, the probe should measure the

source with ±1 % accuracy. No calibration adjustments are available on

the probe.

Specifications

Voltage Range

80K-40: 0 kV to ±40 kV dc or peak ac, 28 kV rms ac

80K-6: 0 kV to ±6 kV dc or peak ac, 4.24 kV rms ac

Input Resistance

80K-40: 1000 MΩ

80K-6: 75 MΩ nominal

Division Ratio: 1000:1 (1000 x attenuation)

Rs Rm x 10

Rm 10

=−

Rs 20 10×

20 10–

------------------- 200

----------20MΩ===

Cf 1.11 + Rm

1.11 x Rm

Cf 1.11 + 1

1.11 x 1 =2.11

1.11 =1.901=

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship

for one year from the date of purchase. This warranty does not cover

fuses, disposable batteries, or damage from accident, neglect, misuse,

alteration, contamination, or abnormal conditions of operation or handling.

Resellers are not authorized to extend any other warranty on Fluke’s

behalf. To obtain service during the warranty period, contact your nearest

Fluke authorized service center to obtain return authorization information,

then send the product to that Service Center with a description of the

problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER

WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE,

ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY

SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES

OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some

states or countries do not allow the exclusion or limitation of an implied

warranty or of incidental or consequential damages, this limitation of

liability may not apply to you.

11/99

Accuracy dc

80K-40: 0 kV to 20 kV: 2 %

20 kV to 35 kV: ±1 % @ 20 °C to 30 °C, add

1 % @ 10 °C to <20 °C and >30 °C to 45 °C)

35 kV to 40 kV: 2 %

80K-6: 0 kV to 6 kV: 1 %

Accuracy ac:

80K-40: 5 % at 60 Hz

80K-6: 1 % dc to 500 Hz

2 % 500 Hz to 1 kHz

-30 % typ. @ 10 kHz

Safety: IEC 61010-031, Type B, Pollution Degree 2

Temperature

Operating: 0 °C to 50 °C

Storage: -20 °C to +60 °C

Relative Humidity: 80 % @ 30 °C

50 % @ 40 °C

Altitude

80K-40:

80K-6:

2000 m, 2000 m to 5000 m: derate linearly the

working voltage from 40 kV peak to 28 kV

peak, and derate linearly the transient

overvoltage from 60 kV peak to 44 kV peak

2000 m

Dimensions (L x W)

80K-40: 36 cm x 7.5 cm (14 in x 3 in)

80K-6: 24.9 cm x 5.10 cm (9.8 in x 2.0 in)

Weight

80K-40: 204 g (7.2 oz)

80K-6: 136 g (4.8 oz)

Fluke Corporation

P.O. Box 9090

Everett, WA 98206-9090

U.S.A.

Fluke Europe B.V.

P.O. Box 1186

5602 BD Eindhoven

The Netherlands

ООО «Флюк СИАЙЭС»

125167, г. Москва,

Ленинградский проспект дом 37,

корпус 9, подъезд 4, 1 этаж

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