AEMC instruments AmpFlex User manual

AmpFlex®

Flexible AC Current Probes

USER MANUAL

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Table of Contents

Warning .....................................................................................................2

International Electrical Symbols ................................................................2

Definition of Measurement Categories......................................................3

Receiving Your Shipment..........................................................................3

Packaging..................................................................................................3

Description ................................................................................................4

Features ....................................................................................................6

Accessories ...............................................................................................6

Standard Models .......................................................................................7

Specifications ............................................................................................8

Instrument Compatibility..........................................................................12

Operation.................................................................................................12

Making Measurements with the AmpFlex®..........................................12

Tips for Making Precise Measurements: .............................................12

Typical Response Curves:...................................................................16

Maintenance............................................................................................18

Warning ...............................................................................................18

Battery Replacement ...........................................................................18

Cleaning...............................................................................................18

Repair and Calibration ............................................................................19

Technical and Sales Assistance .............................................................19

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AmpFlex®- Flexible AC Current Probes

- 2 -

Warning

These safety warnings are provided to ensure the safety of

personnel and proper operation of the instrument.

•Read the instruction manual completely and follow all the

safety information before attempting to use or service this

instrument.

•Wear protective clothing and gloves as required.

•Use caution on any circuit: potentially high voltages and

currents may be present and may pose a shock hazard.

•Read the safety specifications section prior to using the

current probe. Never exceed the max voltage ratings given.

•Safety is the responsibility of the operator. The AmpFlex®

must be used only by qualified personnel using applicable

safety precautions.

•ALWAYS de-energize the circuit before wrapping the

AmpFlex®around bare conductors, bus bars, or near live

parts. Do not wrap on live conductors.

•ALWAYS connect the electronic module to the display

device before wrapping the AmpFlex®around the sample

being tested.

•ALWAYS inspect the module, sensor, sensor cable, and

output terminals prior to use. Replace any defective parts

immediately. Use only factory parts.

•NEVER use the AmpFlex®on electrical conductors rated

above 600V CAT IV; 1000V CAT III.

International Electrical Symbols

This symbol signifies that the current probe is protected by double

or reinforced insulation. Use only factory 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.

This symbol refers to a type B current sensor. Do not apply around

or remove from HAZARDOUS LIVE conductors without additional

protective means (de-energizing the circuit or wearing protective

clothing suitable for high voltage work).

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AmpFlex®- Flexible AC Current Probes

- 3 -

Definition of Measurement Categories

CAT IV: For measurements performed at the primary electrical supply

(<1000V) such as on primary overcurrent protection devices,

ripple control units, or meters.

CAT III: For measurements performed in the building installation at the

distribution level such as on hardwired equipment in fixed

installation and circuit breakers.

CAT II: For measurements performed on circuits directly connected to

the electrical distribution system. Examples are measurements

on household appliances or portable tools.

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.

Packaging

Your AmpFlex®consists of the following items:

•Flexible probe with electronic module

•User manual

•9V battery

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AmpFlex®- Flexible AC Current Probes

- 4 -

Description

The AmpFlex®is a flexible AC current transformer composed of a flexible

sensor and an electronic module. The flexible sensor permits

measurements on conductors where standard clamp-on probes could

not be used. In particular, it can be installed in tight spaces, around

breaker panels, around cable bundles, around wide or large bus bars, or

even wrapped around irregular shapes. The Shape Memory feature

enables the user to “pre-shape” the sensor before inserting it between or

around conductors. This feature facilitates closing, enhances user safety,

and alleviates the drooping effect typically associated with flexible

sensors.

The AmpFlex®is lightweight and does not use magnetic cores like

standard transformers. The transformation principle is based on an air

core. It presents virtually no load to the system under test, has a low

phase shift and excellent frequency response, and cannot be damaged

by overloads.

The sensor assembly is waterproof and insulated for 600V CAT IV;

1000V CAT III. The AmpFlex®meets EN 61010-1, is CE marked, and is

designed with materials and components to meet international agency

approvals.

The AmpFlex®has an mV output proportional to the current measured

for direct readings on DMMs, data loggers, oscilloscopes, and power or

harmonic meters. TRMS measurements are taken when connected to a

TRMS meter. The AmpFlex®is insensitive to DC currents and only the

AC component of the measured signal is measured.

The length of the flexible sensor can be selected in lengths of 24", 36",

and 48" in length. Consult the factory for custom lengths, ranges and/or

features.

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AmpFlex®- Flexible AC Current Probes

- 5 -

AmpFlex®

7. Flexible Sensor

(Diameter 0.5", 12.5mm)

8. Lead from Sensor to Module

(6.5 ft, 2m)

9. Electronic Module -

Descriptive Label on Back

Case (range, model, etc.)

1. Positive: Red Banana Plug (+)

2. Common: Black Banana Plug (-)

3. Power ON Indicator (Green LED)

4. Overload Indicator (Red LED)

5. Range Selection Switch

6. AmpFlex®Connector/Latch

Figure 1

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AmpFlex®- Flexible AC Current Probes

- 6 -

Features

•Models to measure from 0.5Arms to 30,000Arms

•Accuracy 1% of Reading

•TRMS measurements when connected to a TRMS instrument

•No core saturation or damage if overloaded

•Overrange LED for measurement circuitry

•600V CAT IV; 1000V CAT III; EN 61010; CE Mark

•Waterproof sensor

•9V battery for typical 150 hour continuous operation

•Shape Memory for custom pre-shaping of sensor before use

(no drooping)

•Very high frequency response

•Low phase shift for power

•Insensitive to DC, measures only AC component on DC + AC signals

•Excellent linearity

•Lightweight

Accessories

Banana (Female) / BNC (Male) Adapter.....................Cat. # 2118.46

For connection of the AmpFlex®to SLII Models L101, L102, L562,

BNC terminals on scopes and other displaying instruments.

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AmpFlex®- Flexible AC Current Probes

- 7 -

Standard Models

All of our AmpFlex® models are designed to be used with recorders or power analyzers with a

voltage AC input. A scale factor may need to be entered into the recorder to display the exact

value.

Custom lengths and ranges are available. Contact us:

Model Measurement

Range Output Sensor

Length

Max

Conductor

Size

Cat. #

300-24-2-10

30/300A

100/10mV/A

24” (610mm)

8” (190mm)

2112.88

1000-24-1-1

1000A

1mV/A

24” (610mm)

8” (190mm)

2112.39

1000-24-2-1

100/1000A

10/1mV/A

24” (610mm)

8” (190mm)

2112.98

1000-36-2-1

100/1000A

10/1mV/A

36” (910mm)

11” (290mm)

2113.00

3000-24-1-1

3000A

1mV/A

24” (610mm)

8” (190mm)

2112.46

3000-36-1-1

3000A

1mV/A

36” (910mm)

11” (290mm)

2112.48

3000-24-2-1

300/3000A

10/1mV/A

24” (610mm)

8” (190mm)

2113.05

3000-36-2-1

300/3000A

10/1mV/A

36” (910mm)

11” (290mm)

2112.00

3000-48-2-1

300/3000A

10/1mV/A

48” (1220mm)

15” (390mm)

2112.01

6000-36-2-0.1

600/6000A

1/0.1mV/A

36” (910mm)

11” (290mm)

2113.21

30000-24-2-0.1

3000/30,000A

1/0.1mV/A

24” (610mm)

8” (190mm)

2113.33

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AmpFlex®- Flexible AC Current Probes

- 8 -

Specifications

Model

300A

30/300A

1000A

100/1000A

Measurement

Range

5 to 300A 5 to 300A 5 to 1000A 5 to 1000A

Accuracy

±1% +200mA

Output Signal 10mV/A

100mV/A or

10mV/A

1mV/A

10mV/A or

1mV/A

Crest Factor

(mid-range)

3.0 3.0 9.0 9.0

Phase Shift

@ 50/60Hz

1.5° 1.3° 0.7° 0.7°

Residual Noise

200mA

Model #

3000A

300/3000A

3000/30000A

600/6000A

Measurement

Range

5 to 3000A 5 to 3000A 5-30000A 5 to 6000A

Accuracy

±1% +200mA

±1% +1A

±1% +500mA

Output Signal 1mV/A

10mV/A or

1mV/A

1mV/A or

0.1mV/A

1mV/A or

0.1mV/A

Crest Factor

(mid-range)

3.0 3.0 3.0 > 10

Phase Shift

@ 50/60Hz

0.7° 0.7° 0.5° 0.5°

Residual Noise

200mA

500mA

*Reference Conditions: 25°C ± 5°K, 20 to 75% RH, 1 minute warm-up, battery at 9V ± 0.5V, conductor

center, external DC magnetic field < 40A/m, no external AC magnetic field, no external electrical field, 10

to 100Hz, sine wave. See accuracy curves for low currents.

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