RuoShui VR-690 Bedienungsanleitung

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Flexible Coil Clamp

Large Current Meter

VR-690

USER’S MANUAL

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- 2-

Precaution For Use

Thank you for purchasing our Flexible Coil Clamp Large Current Meter, In order to better for

use of the product, please be certain:

-- Read this user manual carefully.

-- Comply with the operating cautions in this manual.

Under any circumstance, shall pay special attention on safety in using this meter.

Pay attention to the text labeled on the panel and backplane of the meter.

When the battery voltage is low and LCD display dark,please replace the battery.

This meter haven`t the function of automatic shut down, please shut down after test.

Cannot used for testing voltage line exceed 600V.

It is prohibited to use when the back cover and battery cover of the meter do not close well.

Please stop using the meter when the metal is exposed due to the rupture of the meter shell or

test wires.

Do not place and store the meter in high temperature and humidity or dewy places and under

direct sunlight for a long time.

The meter and flexible clamp must be maintained regularly, keep clean, and can not be wiped

with corrosive and rough cloth.

The flexible clamp should avoid to bend at will, so as not to cause the coil to break.

Replace the battery, please pay attention to the battery polarity. If you not use the meter for a

long time, please take out the batteries.

Disassembly, calibration, and repair of this tester must be performed by authorized personnel.

Use, disassembly and maintenance of this leakage current meter shall hand by authorized

personnel.

Due to the reason of this instrument, if it is dangerous to continue using, should stopped and

sealed immediately ,and handled by an authorized institution.

The meter manual with the danger mark " ", users must follow instructions to operate safely.

The meter manual with the extremely dangerous mark " ", users must in strict follow

instructions to operate safely.

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1. Introduction

Flexible Coil Large Current Clamp Meter is designed andmanufactured for field testing ofAC

large current. Widely used in electric power, communications, meteorology, railway, oil field,

construction, measurement, scientific research and teaching units, industrial and mining

enterprises and other fields. Especially suitable for the flat cable dense place, current test of

transformer grounding core , thick wire and cable, relay protection, silicon controlled rectifier,

frequency conversion speed regulation, semiconductor switch, power electronic conversion

equipment, arc welding and other industrial environment with serious signal distortion.

Flexible current clamp sensor, Rogowski Coil, adopts advanced Rogowski Coil technology,

which is a loop coil uniformly wound on non-ferromagnetic materials, with no hysteresis effect,

almost zero phase error, no magnetic saturation, high linearity and strong anti-interference ability.

The output signal is the differential of the current with respect to time. By integrating the output

voltage signal, the input current can be truly restored. The measured current ranges from

milliamperes up to ten thousands of amperes. Flexible coil without any exposed metal conductor,

non-contact measurement, safe and reliable. Small size, light weight, soft and flexible, suitable for

narrow environment and flat cable dense places. High measurement accuracy, strong reliability,

wide response frequency band, the user can customize the coil length according to demand.

The meter has the functions of peak hold, data hold and data storage etc., convenient to use,

which is an essential tool for electrical safety inspection

2. Electrical Symbol

Extremely dangerous! The operator must strictly follow the safety rules, otherwise there

would be danger of electric shock, causing personal injury or injury accident.

Dangerous！The operator must strictly follow the safety rules, otherwise there would be

danger of electric shock, causing personal injury or injury accident.

Warning！Operators must strictly follow safety rules , otherwise personal injury or

equipment damage may occur

Double insulation

3. Technical Specifications

Function

AC large current

Power Supply

Zn-Mn dry battery 6F22 9V

Test Method

Flexible CT: The output signal is the differential of current with respect to time. By

integrating the output voltage signal, the input current can be truly restored.

Coil Diameter

φ200mm

Range

AC 0.00A～9999A

Resolution

AC 10mA

Accuracy

±2%rdg±3dgt (the wire is at the center of the flexible coil, 23 ℃± 2 ℃)

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Coil Length

628mm

Coil Thickness

φ7.5mm (Suitable for use in narrow environments and cable densely packed

place, etc.)

The Measured

Current Frequency

50Hz/60Hz(Automatic)

Meter Size

190mm×370mm×40mm

LCD Size

35mm×21.5mm; Display domain: 32mm×15mm

Backlight

with backlight, convenient to use in dark site

Weight

200g

Electric Field

Interference

No hysteresis effect, strong anti-interference ability

Position Error

The measured wire should be in the center of the flexible coil as far as possible,

not close to the opening and closing mouth, the test error at the opening and

closing mouth will increase by one times or more

Sampling Rate

2 times /second

Data Storage

99units, flash display “FULL” symbol indicate storage full

Peak Hold

Peak value capture and hold function, long press POWER key display peak

value, and the “ ” symbol display

Data Hold

Data hold function: “DH” symbol display

Line Voltage

Below AC 600V circuit measurement

Overflow Display

Exceed measure range overflow function: “OL” symbol display

Battery Voltage

While battery voltage is lower than 7.2V. low battery voltage symbol display,

remind to replace the battery

Rated Current

About 8mA

Working

environment

-10℃~40℃；below 80%rh

Store environment

-10℃~60℃；below 70%rh

Insulation

Resistance

100MΩ or large more,1000V

Suitable Safety

Standard

IEC1010-1、IEC1010-2-032、Pollution 2、CAT VI(1000V) ,IEC61326(EMC

standard)

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4. Meter Structure

4.1. Flexible Coil

4.2. Lock catch (Turn back and forth according arrow to lock or open the coil)

4.3. POWER key

4.4. LCD

4.5. HOLD Key

4.6. Meter front cover

4.7. Meter back cover

4.8. Battery cover

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5. Operate Method

5.1. Start-up, Shutdown

Press POWER key to start up, LCD display; Press the POWER key again to shut down. The

meter start up after 5 minutes, LCD will flashes and indicate that will auto shut down, continue

flashes 30s will shut down formally to reduce battery consumption. In case you press POWER key

when LCD are flashing, the meter will continue to working 5 minutes. If LCD display is dark after

start up, it might battery voltage is low, please replace battery.

5.2. Current Measurement

High voltage, extremely dangerous! Must be operated by trained and authorized

personnel. The operator must strictly follow the safety rules, otherwise there would

be danger of electric shock, causing personal injury or injury accident.

Dangerous！Cannot be used to measure the voltage line exceed 600V, otherwise

there would be danger of electric shock, causing personal injury or injury accident

5.2.1. Start up the meter

5.2.2. Rotate the lock catch according to the OPEN direction in the above meter structure

diagram, unscrew the flexible coil lock catch, clamp the measured wire with flexible coil clamp, and

then rotate the lock catch as to the CLOSE direction, to lock the flexible coil again.

5.2.3. Observe the reading value, if the meter display "OL" symbol, indicate the measured

current exceeds the upper limit of the meter. The tested wire should be in the central position of the

flexible coil as far as possible (near point A), not near the opening and closing point (area C). The

test error at the opening and closing point increases about twice or more, and the error near

position point B increases by about 1%..

5.2.4. When the measured current is small, the test resolution can be improved by repeatedly

wrapping the flexible coil around to the measured wire for many times and then closing. For

example, the measured current is 10A, and the flexible coil wrapped around the tested wire for 3

times, the meter will show 30A, and the flexible coil will show 50A if it is wrapped around 5 times,

and so on, the actual current is equal to the display value of the meter divided to the number of

winding of the flexible coil.

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5.3. Peak Hold

In measurement press POWER key (over 3 seconds), display ”PEAK” symbol, and enter into

captures mode of peak value, and display “”symbol, of the circuit in this time period, and

releases the hand to return to the test state. The meter automatically captures the current peak value

of the circuit line during this period, release hand and returns to the test state.

5.4. Data Hold, Cancel, Storage, Access, Clear

5.4.1. During testing press HOLD key for a short time (less than 3 seconds), DH symbol will

display, the meter will hold present measuring data and automatically stored in the memory with a

unit ID; press HOLD key again to exit the hold state, and the meter continues measuring; If stored

data reached 99groups, press HOLD key again, the “FULL” symbol will display, indicate storage

data is full; press HOLD key to cancel “FULL” flashing and return to measuring mode.

5.4.2. Press HOLD+POWER keys to enter into data access mode and display Unit 1 storage

data automatically; and then press HOLD key again to turn the page and access stored data; If

haven`t storage data will display “null” symbol, press POWER key to exit data access mode.

5.4.3. After entering into data access mode, long press HOLD key (over 3 seconds) will clean

all stored data; when the meter display “dEL” symbol, indicate that it has finished clean process,

and then return to measuring state automatically.

6. Function Quick Checking

POWER key short press

Start up/shut down/exit

HOLD key short press

Data hold/relieve/store

HOLD key long press exceed 3 seconds

Peak hold（in test mode）

HOLD key long press exceed 3 seconds

Data delete（in data access mode）

HOLD key + POWER key

Data access/browse（HOLD key）

7. Display Sample

7.1.--- the tested leakage current is 0.25mA

7.2.--- low battery power, please replace the

battery

7.3.--- the tested leakage current is 5.00mA

--- hold testing data

--- automatic store with 03 group data

7.4.--- access the 03 group data of storage

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8. Battery Replacement

Warning! The meter cannot test in the situation of the battery cover plate is not

covered properly, otherwise it is dangerous

Please pay attention to the polarity of battery, or will damage the meter.

Low battery, please replace the battery in time

If not use the leaker for a long time, please take out batteries.

8.1. When the battery power is low, the meter display low battery voltage symbol, please replace

the battery

8.2. Press POWER key to shut down the meter; and confirm the meter is in off state, and then

open the battery cover, please attention batter model, and then replace with qualified new battery;

cover battery cover plate.

9. Accessories

Meter

1 PCS

Data Software/RS232 communication cable

1 PCS

Package/Manual/Warranty card / Certification

1 SET

The company is not responsible for other losses caused by use.

The contents of this user manual cannot be used as a reason to use the

product for special purposes.

The company reserves the right to modify the contents of the user manual. If

there are any changes, no further notice will be given.

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