353 - Measurement FLUKE - Free user manual and instructions

Product Type	Hand-held Clamp Meter
Model	353
Brand	Fluke
Dimensions (L x W x D)	300 mm x 98 mm x 52 mm (12 in x 3.75 in x 2 in)
Weight	0.814 kg (1.8 lb)
Power Supply	6 AA/LR6 batteries (1.5 V each)
Display	Digital LCD with backlight
Jaw Size	58 mm (2.28 in) diameter
Current Measurement	AC, DC, AC+DC true RMS up to 2000 A (1000 Hz)
Voltage Measurement (355 only)	AC, DC, AC+DC true RMS up to 1000 V (1 kHz)
Inrush Current Measurement	Yes, dedicated button
Frequency Measurement	5.0 Hz to 1 kHz
Resistance Measurement (355 only)	400 Ω to 400 kΩ
Continuity Test (355 only)	Beeper on below 30 Ω
Key Functions	Hold, Zero, Hz, Low Pass Filter, Min Max, Inrush, Range, Backlight, Auto Power Off (20 min)
Safety Rating	CAT IV 600 V, CAT III 1000 V
Operating Temperature	0 °C to 50 °C (32 °F to 122 °F)
Storage Temperature	-20 °C to 60 °C (-4 °F to 140 °F)
Humidity (Operating)	0 to 95% non-condensing
IP Rating	IP42 (indoor use only)
Cleaning Instructions	Wipe with a damp cloth; do not use abrasives or solvents
Warranty	3 years from purchase date
Included Accessories (353)	Software carrying case, 6 AA batteries, user manual
Spare Parts	C43 carrying case, TL224 test leads, TP2 test probes, AC285 alligator clips

Frequently Asked Questions - 353 FLUKE

How do I measure AC or DC current with the Fluke 353?

Turn the rotary switch to the appropriate current position (AC, DC, or AC+DC). Open the clamp by pressing the jaw release and insert one conductor into the clamp. Close the clamp and center the conductor using the alignment marks. Read the current on the main display. For AC frequency, press the Hz button.

How do I measure inrush current?

With the system powered down, place the source wire into the clamp jaws. Turn the knob to the AC current position. Press the INRUSH button. Power up the system; the inrush current will be displayed.

Can the Fluke 353 measure voltage and resistance?

No, the Fluke 353 measures only current (AC, DC, AC+DC), inrush current, and frequency. Voltage and resistance measurements are available only on the Fluke 355 model.

What does the low battery symbol mean and how do I change batteries?

The low battery symbol (☐) appears when battery voltage is low. To change batteries: turn off the meter, disconnect test leads, open the battery cover on the back, replace all six AA/LR6 batteries with correct polarity, then close and tighten the cover.

How do I clean the Fluke 353?

Periodically wipe the meter with a damp cloth. Do not use abrasives or solvents, as they may damage the instrument.

What safety precautions should I follow when using the clamp meter?

Always use the meter as specified. Do not work alone on live circuits. Keep fingers behind the tactile barrier. Never measure current while test leads are inserted. Inspect the meter and leads before use. Do not use if the jaw wear indicator is not visible.

What is the warranty for Fluke 353?

Fluke warrants the product to be free from defects in material and workmanship for three years from the date of purchase. The warranty does not cover fuses, disposable batteries, or damage from misuse or abnormal conditions.

How do I interpret the symbols on the display?

The display shows icons for Zero mode (ZERO), Low Pass Filter, Hold, Min Max, Manual Range, AC/DC, Resistance, Frequency, Low Battery, and Inrush. Refer to the user manual table for a complete explanation of each symbol.

What accessories are included with the Fluke 353?

The Fluke 353 includes a soft carrying case, six AA/LR6 batteries (installed), and a user manual (7 languages). Test leads and probes are not included; they are provided with the Fluke 355 model.

What should I do if the meter does not turn on?

Check that the batteries are correctly installed and have sufficient charge. Ensure the rotary switch is not in the OFF position. If the problem persists, contact Fluke service.

USER MANUAL 353 FLUKE

© 2007 Fluke Corporation, All rights reserved. Printed in China.

All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for three years 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.

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

Table of Contents

Title

Page

Introduction ....1 Contacting Fluke ....1
Safety Information .... 2 Features .... 5
Display....7 Using the Meter....8 Measuring AC or DC Current....6 Measuring Inrush Current....9 Measuring AC and DC Voltage (355 only)....10 Testing Continuity (355 only)....12 Measuring Resistance (355 only)....13
Maintenance....14 Cleaning the Meter....14 Changing the Batteries....14
User Replaceable Parts .... 14 Specifications .... 15 Electrical Specifications .... 15 Standards and Agency Approval Specifications .... 18 Environmental Specifications .... 18

353/355

Users Manual

List of Tables

Table Title Page

1. Explanation of Symbols...... 4
2. Features and Buttons 5
3. Rotary Switch Positions.... 6
4. Display....

353/355

Users Manual

List of Figures

Figure Title Page

1. Feature Locations.... 5
2. The Display 7
3. Connecting the Meter 8
4. Measuring Inrush Current....9
5. AC Voltage Measurement 10
6. DC Voltage Measurement 11
7. Measuring Continuity.... 12
8. Measuring Resistance.... 13

353/355

Users Manual

Clamp Meter

Introduction

The Fluke 353 and 355 are hand-held battery-operated Clamp Meters (the Meter). Both Meters measure ac, dc true rms, inrush current and frequency; The 355 also measures ac, dc, true rms voltage, and resistance.

The Meter ships with:

• TL224 Test leads (355 only)
• AC285 Clips (355 only)
• TP74 Test Probes (355 only)
- Soft carrying case
- 6 AA/LR6 Batteries, installed
• 353/355 Users Manual (7 languages)

Contacting Fluke

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

USA: 1-888-99-FLUKE (1-888-993-5853)

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

Europe: [phone]

Japan: [phone]

Singapore: [phone]

Anywhere in the world: [phone]

Or visit Fluke's Web site at: www.fluke.com.

Register the Meter at: http://register.fluke.com

Safety Information

⚠️⚠️Warnings: Read First

To avoid possible electric shock or personal injury:

• Use the Meter only as specified in this manual or the protection provided by the Meter might be impaired.
• Avoid working alone so assistance can be rendered.
• Never measure ac current while the test leads are inserted into the input jacks.
• Do not use the Meter in wet or dirty environments.
• Do not use the Meter if it appears damaged. Inspect the Meter before use. Look for cracks or missing plastic. Pay particular attention to the insulation around the connectors.
• Inspect the test leads before use. Do not use them if insulation is damaged or metal is exposed.
• Check the test leads for continuity. Replace damaged test leads before using the Meter.
• Have the Meter serviced only by qualified service personnel.
• Use extreme caution when working around bare conductors or bus bars. Contact with the conductor could result in electric shock.

• Do not hold the Meter anywhere beyond the tactile barrier. See Figure 1.

• When measuring current, center the conductor in the clamp. See Figure 1.

• Do not apply more than the rated voltage, as marked on the Meter, between the terminals or between any terminal and earth ground.
• Remove test leads from the Meter before opening the Meter case.
• Never operate the Meter with the back cover removed or the case open.
• Never remove the back cover or open the case of an instrument without first removing the test leads or the jaws from a live conductor.
• Use caution when working with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc. These voltages pose a shock hazard.
• Do not attempt to measure any voltage that might exceed the maximum range of the Meter- 600 V rms and 1 kHz or 1000 V dc.
• Use the proper terminals, function, and range for your measurements.

Clamp Meter

Safety Information

• Do not operate the Meter around explosive gas, vapor, or dust.
• When using probes, keep fingers behind the finger guards.
• When making electrical connections, connect the common test lead before connecting the live test lead; when disconnecting, disconnect the live test lead before disconnecting the common test lead.
• Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, or diodes.

• Use only 6 AA/LR6 batteries, properly installed in the Meter case, to power the Meter.

• To avoid false readings that can lead to electrical shock and injury, replace the battery as soon as the low battery indicator (☐) appears. Check Meter operation on a known source before and after use.

• When servicing, use only specified replacement parts.
• Adhere to local and national safety codes. Individual protective equipment must be used to prevent shock and arc blast injury where hazardous live conductors are exposed.
• Do not use the Meter if the wear indicator in the jaw opening is not visible. See Figure 1.

Table 1. Explanation of Symbols

Symbol	Explanation
⚠️	Risk of danger. Important information. Refer to operation instructions.
⚠️	Hazardous voltage
⚡	Application and removal from hazardous live conductors permitted
☐	Double insulated
☐	Battery
⊥	Earth Ground
~	Alternating Current
---	Direct Current
☒	Do not dispose of this product as unsorted municipal waste. Go to Fluke’s web site for recycling information.
CE	Conforms to requirements of European Union and European Free Trade
N10140	Conforms to relevant Australian standards
CAT III	Equipment is designed to protect against transients in equipment in fixed-equipment installations, such as distribution panels, feeders and short branch circuits, and lighting systems in large buildings.
CAT IV	Equipment is designed to protect against transients from the primary supply level, such as an electricity meter or an overhead or underground utility service.
SR*	Canadian Standards Association

Features

See Figure 1 and Tables 2 and 3 for a list of features.

fbq03.eps

Figure 1. Feature Locations (355 shown)
Table 2. Features and Buttons

Number	Description
1	Current sensing clamp
2	Rotary function switch
3	Hold button- freezes the display reading and releases the reading when pressed a second time
4	Zero button- Clears last reading from the display and establishes a baseline for ac + dc and dc current readings.
5	Hz button- press to see frequency in the secondary display.
6	Low Pass Filter button- Press to turn on the low pass filter. The filter eliminates high frequency noise such as from a ASD or VFD motor speed controller.
7	Volts/Ohm input terminal. (355 only)
8	Common input terminal. (355 only)
9	Min Max button -When first pressed, the Meter shows maximum input. With subsequent presses, the minimum and the average inputs are shown. Hold for 2 seconds to exit min max mode. This function works in current, voltage and Frequency modes when activated.
10	Inrush button- Press this button to enter inrush mode. Press it a second time to exit.
11	Range button- press to change range or to turn off auto range.
12	Backlight button - Turns the backlight on and off. The backlight goes off after 5 minutes.
13	Jaw release
14	Tactile barrier⚠ Warning: To avoid injury, do not hold the Meter anywhere above the tactile barrier.
15	Display
16	Jaw wear indicator.⚠ Warning: To avoid injury, do not use the Meter if the wear indicator in the jaw opening is not visible.
N/A	Auto Power Off- The Meter turns off if there is no button pushed or rotary function switch operation for 20 minutes. Turn the Meter off and on to restart the Meter. This feature is disabled when the Meter is in Min Max mode.

Table 3. Rotary Switch Positions

Rotary Switch Position 353/355
Position	Function	Position	Function
OFF	Meter is powered down		AC current
	DC current	AC + DC A	Combined ac + dc (true rms) current reading.
Additional Positions (355 Only)
Position	Function	Position	Function
	AC voltage		DC voltage
V_AC+DC	Combined ac + dc (true rms) voltage reading.	|||	Continuity
Resistance

Display

Figure 2 and Table 4 explain the display.

fbq01.eps

Figure 2. The Display
Table 4. Display

Item	Explanation
1	Zero mode is active
2	Low pass filter is active
3	Hold mode is active
4	Min Max mode is active
5	Min, Max, Avg, or Live modes. Live mode is active with Min Max and designates the real-time reading.
6	Manual or Auto Range is active
7	Amps or Volts is active
8	AC and DC mode is active
9	Resistance mode is active
10	Frequency mode is active
11	Low Battery Symbol
12	Frequency display
13	Main display
14	Hazardous voltage present
15	Continuity symbol
16	Inrush mode is active

Using the Meter

⚠ Warning

To avoid electric shock or personal injury:

• When measuring current, center the conductor in the clamp.
• When making current measurements, disconnect the test leads from the Meter.
• Keep fingers behind Tactile Barrier. See Meter Features.

Measuring AC or DC Current

To measure ac or dc current:

1. Turn the rotary function switch to the proper current setting , , or _A^AC + DC .
2. Open the clamp by pressing the jaw release and insert the conductor to be measured into the clamp.
3. Close the clamp and center the conductor using the jaw alignment marks.
4. View the current reading on the main display.
5. When measuring ac or ac + dc current, press Hz to view the frequency reading on the frequency display.

⚠ Warning

To avoid possible electric shock or personal injury, if current is moving in opposite directions, place only ONE conductor into the clamp at a time. If current is moving in the same direction, more than one conductor may be placed into the clamp. See Figure 3.

Figure 3. Connecting the Meter

Clamp Meter

Using the Meter

Measuring Inrush Current

Inrush current is surge current that occur when an electrical device is first powered on. Once the device has reached its normal working condition, the current stabilizes. See Figure 4.

To capture the inrush current reading:

1. With the system under test powered down, place the source wire into the Meter jaws.
2. Turn the knob to .
3. Press INRUSH on the Meter.
4. Power up the system under test. The inrush current is shown on the Meter display.

Figure 4. Measuring Inrush Current

fbq07.eps

Measuring AC and DC Voltage (355 only)

To measure ac or dc voltage:

1. Turn the rotary function switch to , , or V^AC+DC .
2. Connect the black test lead to the COM terminal and the red test lead to the V terminal. Before connecting the probes to the measurement points, add any clips to the probes that are necessary.
3. Measure the voltage by touching the probes to the desired test points of the circuit.
4. View the reading on the display.
5. When measuring ac voltage, press Hz to view the frequency reading on the frequency display. See Figures 5 and 6.

Figure 5. AC Voltage Measurement
fbq05.eps

Clamp Meter

Using the Meter

Figure 6. DC Voltage Measurement

1bxq06.eps

Testing Continuity (355 only)

⚠ Warning

To avoid electrical shock when testing continuity in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged.

To test continuity:

1. Connect the black test lead to the COM terminal and the red test lead to the V terminal.
2. Remove power from the circuit being tested. Turn the rotary function switch to ·s .
3. Connect the probes across the circuit or component to be tested.
4. If the resistance is < 30 , the beeper sounds continuously, designating a short circuit (①). If the display reads OL, the circuit is open (②) or above 399.9 . See Figure 7.

Figure 7. Measuring Continuity

Measuring Resistance (355 only)

⚠ Warning

To avoid possible electric shock or personal injury, when measuring resistance in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged.

To measure resistance:

1. Turn the rotary function switch to .
2. Remove power from the circuit being tested.
3. Connect the black test lead to the COM terminal and the red test lead to the V terminal.
4. Measure the resistance by touching the probes to the desired test points of the circuit.
5. View the reading on the display. See Figure 8.

Warning

To avoid electrical shock or personal injury, be aware that dangerous voltages may be present at the input terminals and may not be displayed

Figure 8. Measuring Resistance

fbq08.eps

Maintenance

Warning

To avoid electrical shock, or personal injury:

• Repairs or servicing not covered in this manual should be performed only by qualified personnel.
• Disconnect test leads from the Meter before removing its back cover.
• Never use the Meter with the back cover removed.

Caution

• To avoid contamination or static damage of the Meter, do not touch the circuit board without proper static protection.
• If the Meter is not going to be used for an extended time, remove the battery. Do not store the Meter in high temperature or high-humidity environments.

Cleaning the Meter

Caution

To avoid damaging the meter, do not use abrasives or solvents on this instrument.

Periodically clean the Meter by wiping it with a damp cloth.

Changing the Batteries

When battery voltage drops below the value required for proper operation, the battery symbol (☐) appears and the Meter beeps.

To change the batteries:

1. Turn the Meter off and disconnect the test leads.
2. Using a screwdriver, open the battery cover on the back of the Meter.
3. Replace the batteries with six new AA/LR6 batteries. Observe correct polarity when installing the batteries.
4. Close the back cover and tighten the screw.

User Replaceable Parts

Refer to Contacting Fluke for more information.

• C43 Soft carrying case
• TL224 1.5 m silicone rubber test leads
- TP2 Test Probes
- AC285 Alligator Clips

Clamp Meter

Specifications

Specifications

Electrical Specifications

Current Measurement 10 Hz to 100Hz

Range	Resolution	Accuracy,	Trigger Level for Inrush	Trigger Level for Hz Filter OFF	Trigger Level for Hz Filter ON
40 A 10 mA 1.5	% rdg + 15 digits	0.50 A 2.50 A 0.50 A
400 A 100 mA 1	5 % rdg + 5 digits	5.0 A 2.5 A 2.5 A
2000 A; 1400 ac rms	1 A 1.5 % rdg + 5 digits	5 A	8 A	8 A

Current Measurement 100.1 Hz to 1 kHz

Range	Resolution	Accuracy >10 A
40 A	10 mA	3.5 % rdg + 15 digits
400 A	100 mA	3.5 % rdg + 5 digits
2000 A; 1400 ac rms	1 A	3.5 % rdg + 5 digits

Voltage Measurement (355 only) 10 Hz to 100 Hz

600 and 1000 V ranges have 10 % over range to 660 and 1100 V respectively.

Range	Resolution	Accuracy	Trigger Level for Hz Filter OFF	Trigger Level for Hz Filter ON
4 V 1 mV 1 % rdg + 10 digits 0.050 V 0.050 V
40 V 10 mV 1 % rdg + 5 digits 0.25 V 0.25 V
400 V 100 mV 1 % rdg + 5 digits 6 V 6 V
600 V AC RMS 1 V 1 % rdg + 5 digits 6 V 6 V
1000 V DC	1 V 1 % rdg + 5 digits N/A		N/A

Voltage Measurement (355 only) 100.1 Hz to 1 kHz

600 and 1000 V ranges have 10 % over range to 660 and 1100 V

Range	Resolution	Accuracy
4 V 1 mV	3 % rdg + 10	digits
40 V 10 mV	3 % rdg + 5	digits
400 V 100 mV	3 % rdg +	5 digits
600 V AC RMS 1 V	3 % rdg + 5 digits

Ohms Measurement (355 only)

Range	Resolution	Accuracy
400 Ω	0.1 Ω	1.5 % + 5 digits
4 k Ω	1 Ω	1.5 % + 5 digits
40 k Ω	10 Ω	1.5 % + 5 digits
400 k Ω	100 Ω	1.5 % + 5 digits

Clamp Meter

Specifications

Continuity Beeper (355)

On at ≤ 30

Off at ≥ 100 Ω

Frequency Measurement

Measurement Range 5.0 Hz to 1 kHz

Resolution 0.1 Hz (15 Hz to 399.9 Hz)

1 Hz ( 400 Hz to 1 kHz)

Accuracy

5.0 to 100 Hz 0.2% + 2 counts

Accuracy

100.1 Hz to 1 kHz 0.5 % + 5 counts

Trigger Level Refer to current and

voltage tables

General Specifications

Batteries: 6-1.5 V AA NEDA 15 A or IEC LR6

Test Leads: Rated to 1000 V

Weight: 1.8 lb (.814 kg)

Jaw Size: 2.28 inches (58 mm)

Dimensions (L x W x D): 12 inches x 3.75 inches x

2 inches (300 mm x 98 mm x 52 mm)

Safety Rating: IEC 61010-2-032, 600 V CAT IV,

1000 V CAT III

Standards and Agency Approval Specifications

Design

Standards and

Compliance

Agency

Approvals

Over-voltage

Category

EN61010-032 CAT IV 600 V.

IEC/EN 61326-1:1997

N10140

IEC61010-1 CAT III 1000 V,

CAT IV 600 V

Environmental Specifications

Operating

32 °F to + 122 °F

Témperature

(0 °C to +50 °C)

Storage

-4 °F to 140 °F

Temperature

(-20 °C to +60 °C)

Operating

0 to 95 % (non-condensing)

Humidity

Operating

2000 m

Altitude

Storage

10,000 m

Altitude

IP Rating

42 (indoor use only)

Drop Test

1 m

Requirements

EMI, RFI, EMC

FCC part 15, IEC/EN 61326-1:1997

class B, IEC/EN 61326:1997 3V/m,

performance criteria B, EN61325

Temperature

Current: 0.1 % of reading per °C

Coefficients

outside 22-24 °C

Voltage: 0.1 % of reading per °C

outside 22-24 °C