Uni-T UT-CS09D Manual

Uni-T Måleudstyr UT-CS09D

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Side 1/4

UT-CS09A/D

Flex Clamp Current Sensor

Thank you for purchasing this brand new UNI-T product. In order to safely and correctly use this

device, please read this manual carefully, especially the Safety Instructions section.

Please keep the manual accessible near the device for future reference.

1. Introduction

2. Open Box Inspection

3. Safety Instructions

4. Symbols

5. Structure

6. Operation Instructions

7. Technical Specifications

A. General specifications

B. Operating environment

C. Electric specifications

8.Maintenance

A. General maintenance

B. Battery installation & replacement

1. Instruction

UT-CS09A/UT-CS09D is a stable, safe and reliable 3000A AC Rogowski flex Clamp Current Sensor

(hereinafter called current sensor). The core of the design is the Rogowski coil.

Warning:

To avoid electric shock or injury, please read Safety Instructions and Warnings before operating this

product.

2. Open Box Inspection

Open the package box and take out the device. Please check whether the following items are deficient

or damaged and contact your supplier immediately if they are.

User manual ----------------------- 1

BNC adapter------------------------ 1 pc

Battery: 1.5V AAA----------------- 3 pc

3. Safety Instructions

In this manual, a Warning identifies conditions and actions that pose hazard(s) to the user or the

test device.

This device strictly follows CE standards: IEC61010-1; IEC61010-031; IEC61010-2-032 as well as

CAT IV 600V, RoHS, pollution grade II, and double insulation standards.

If the clamp is used in a manner that is not specified in this manual, the protection provided by the

device might be impaired.

1) Do not use the device if the rear cover or the battery cover is not covered up.

2) When measuring, keep fingers behind the finger guard on the measuring head. Do not touch

bare cables, connectors, unoccupied input terminals or circuit being measured.

3) Before measuring, the switch should be on correct position. Do not switch positions during

measurement.

4) Do not use the clamp on any conductor with voltages higher than DC 1000V or AC 750V.

5) Use caution when working with voltages above 33V AC rms. Such voltages pose shock hazard.

6) Do not use the device to measure current higher than specified range. If current value being

measured is unknown, select 3000A position and reduce accordingly.

7) To avoid false reading, replace the battery if “POWER” indicator flashes. Remove the battery

if the sensor is left unused for a long time.

8) Do not change the internal circuit of the device.

9) Do not store or use the sensor in high temperature, high humidity, explosive, or strong magnetic

field environments.

10) Use soft cloth to clean the case, do not use abradants or solvents.

11) Do not use when the jaw or "jaw end" is worn.

Double insulation

Grounding

Warning

AC (Alternating Current)

Battery

High voltage hazard

Comply with European Union standards

Conforms to UL STD. 61010-1, 61010-2-032, 61010-031,

Certified to CSA STD. C22.2 No. 61010-1, 61010-2-032, 61010-031.

It is applicable to test and measuring circuits connected at the source of the building’s

low-voltage MAINS installation.

4. Symbols

CAT IV

5.Structure

1. Flexible Rogowski coil

2. Flexible clamp lock

Rotate the knob according to the arrow mark on the case to lock or unlock

3. Fixed piece

4. Power indicator

Normal status: constant red light

Low power (<3.3V): flash once for every 1s period. Please replace the batteries.

5. Switch

A. 30A

For measuring 1.5A~30A

B. 300A

For measuring 30A~300A

C. 3000A

For measuring 300A~3000A

D. OFF

Switch off the sensor

6. Corresponding output voltage

A. 30A range: 1A -> 100mV

B. 300A range: 1A -> 10mV

C. 3000A range: 1A -> 1mV

7. Voltage signal output terminal

The corresponding voltage output of AC current measured through flexible current sensor.

6.Operations

BNC terminal can be used to connect flexible current sensor to read out on oscilloscope

Warnings：

To avoid false reading, do not use low input impedance settings when using oscilloscopes as readouts.

AC measurement

Warning:

Before measuring, switch off the conductor to be measured. Do not turn on the conductor before the sensor

is locked around the conductor to be measured.

Caution:

Keep your hands away from the Rogowski ring and conductor to be measured.

1.Connect the sensor with alternating voltage measure device e.g. multimeter. (see figure 2)

Figure 2

Figure 1

2. Unlock the Rogowski coil according to (see figure 3).Section 5.2

Figure 3

Flex Clamp

Current Sensor

Flex Clamp

Current Sensor

Flex Clamp

Current Sensor

P/N:110401109668X

4. Turn on the sensor, then power on the conductor.

5. Read the value displayed on the multimeter. (Max Value=3.0V). If the current to be measured is

over the range, please select appropriate range (30A/300A/3000A)

6. Improper operation example (see figure 5a, 5b).

Figure 5a Figure 5b

7. Technical specifications

A. General specifications

Max output voltage:---------------------------- 3.00V (AC)

Over range indication:------------------------ reading> 3.00V (AC)

Low power indication:------------------------ “POWER” indicator flashes, battery voltage<3.3V,

please replace the battery

Sensor type:------------------------------------- Rogowski clamp sensor

Position error: ---------------------------------- At central position: ±3.0% of reading

outside central area: additional error according to zone

ABC. (see Electric specification)

Drop test: ---------------------------------------- 1 meter

Measuring head size:------------------------- UT-CS09A Length=25.4cm (10")

UT-CS09D Length= 45.7cm (18")

Conductor trace line:--------------------------- Max diameter: 14cm

Electromagnetic field interference:--------- unstable performance or incorrect reading

Battery:-------------------------------------------- AAA 1.5V (3pcs)

B. Operating environment

Max altitude:------------------------------------- 2000m

Safety standard:-------------------------------- IEC61010-1; IEC61010-031

IEC61010-2-032; CAT IV 600V

Pollution grade:---------------------------------- 2

Information of usage:--------------------------- Indoor

Operating temperature:------------------------ 0˚C~50˚C

Operating humidity:-----------------------------≤80%RH

Storage:------------------------------------------- -20 ˚C ~ 60 ˚C (≤80%RH)

C. Electric specifications

Accuracy:----------------------------------------- ±(%of reading+ numerical number of least significant

digit) 1 Year Warranty

Environment temperature:-------------------- 23 ˚C ± 5 ˚C

Environment humidity:------------------------- ≤80%RH

Temperature coefficient:---------------------- 0.2×(specified accuracy)/ ˚C (<18 ˚C or >28 ˚C)

(1) UT-CS09A AC current measurement:

Range

Resolution

Corresponding

voltage

Accuracy (at

central position)

Frequency Response

30A

300A

3000A

0.1A

10A

~100mV/1A

~10mV/1A

~1mV/1A

±(3%+5)

45Hz~500Hz

Additional

accuracy range

when measuring

outside of

optimum

location

(Assume no

external

electric or

magnetic field）

Central optimum

measurement location

15mm(0.6”)

away from center

25mm(1.0”)

away from center

35mm(1.4”)

away from center

±(3%+5)

Additional2.0%

additional 2.5%

additional 3.0%

Zone A

Zone B

Zone C

(2) UT-CS09D AC current measurement:

Range

Resolution

Corresponding

voltage

Accuracy (at

central position)

Frequency Response

30A

300A

3000A

0.1A

10A

~100mV/1A

~10mV/1A

~1mV/1A

±(3%+5)

45Hz~500Hz

Central optimum

measurement location

±(3%+5)

Additional 1.0%

additional 1.5%

additional 2.0%

Zone A

Zone B

Zone C

Additional

accuracy range

when measuring

outside of

optimum location

(Assume no

external electric

or magnetic field）

35mm(1.4”)

away from center

50mm(2.0”)

away from center

60mm(2.4”)

away from center

8. Maintenance

A. General maintenance

Warning: remove the test probes before open the rear cover or it may pose a shock hazard.

a. The maintenance and service must be implemented by qualified professionals or designated

departments.

b. Clean the case with a dry cloth. Do not use abradants or solvents

B. Battery installation & replacement

The sensor uses three AAA 1.5V alkaline batteries for operation.

To install or replace the battery:

a. Switch off the sensor and remove the test probes from the terminal input.

b. Unscrew the battery cover, remove the cover and install new batteries ensuring that the correct polarity

is observed.

c. Use batteries of the same type

d. Replace the battery cover and screw up.

Shut down

After measurement, switch to OFF position to shut down the device.

Buzzer

The buzzer will go off at effective range.

3. Use the Rogowski coil to wrap and lock around the conductor to be measured. (see figure 4)

Figure 4

Flex Clamp

Current Sensor

Flex Clamp

Current Sensor

Flex Clamp

Current Sensor

Produkt Specifikationer

Mærke:	Uni-T
Kategori:	Måleudstyr
Model:	UT-CS09D

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