HVTest SMG2000B Manuel utilisateur

Dear Client

Thank you for Purchasing our SMG2000B Double Clamps

Digital Phase Meter. Please read the manual in detail prior to first

use, which will help you use the equipment skillfully.

Our aim is to improve and perfect the

company's products continually, so there may be

slight differences between your purchase equipment

and its instruction manual. You can find the changes

in the appendix. Sorry for the inconvenience. If you have further

questions, welcome to contact with our service department.

The input/output terminals and the test column

may bring voltage, when you plug/draw the test wire or

power outlet, they will cause electric spark. PLEASE

CAUTION RISK OF ELECTRICAL SHOCK!

Company Address:

T4，No. 41, High-tech 2 Road，East Lake High-tech Development Zone，

Wuhan

Sales Hotline: 86-27- 87457960

After Service Hotline:86-27- 87459656

Fax: 86-27- 87803129

E-mail: [email protected]

Website: www.hvtest.cc

SERIOUS COMMITMENT

All products of our company carry one year limited warranty

from the date of shipment. If any such product proves defective

during this warranty period we will maintain it for free. Meanwhile

we implement lifetime service. Except otherwise agreed by

contract.

SAFETY REQUIREMENTS

Please read the following safety precautions carefully to avoid

body injury and prevent the product or other relevant subassembly

to damage. In order to avoid possible danger, this product can only

be used within the prescribed scope.

Only qualified technician can carry out maintenance or repair

work.

--To avoid fire and personal injury:

Use Proper Power Cord

Only use the power wire supplied by the product or meet the

specification of this produce.

Connect and Disconnect Correctly

When the test wire is connected to the live terminal, please do

not connect or disconnect the test wire.

Grounding

The product is grounded through the power wire; besides, the

ground pole of the shell must be grounded. To prevent electric

shock, the grounding conductor must be connected to the ground.

Make sure the product has been grounded correctly before

connecting with the input/output port.

Pay Attention to the Ratings of All Terminals

To prevent the fire hazard or electric shock, please be care of

all ratings and labels/marks of this product. Before connecting,

please read the instruction manual to acquire information about the

ratings.

Do Not Operate without Covers

Do not operate this product when covers or panels removed.

Use Proper Fuse

Only use the fuse with type and rating specified for the product.

Avoid Touching Bare Circuit and Charged Metal

Do not touch the bare connection points and parts of energized

equipment.

Do Not Operate with Suspicious Failures

If you encounter operating failure, do not continue. Please

contact with our maintenance staff.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in Explosive Atmospheres.

Ensure Product Surfaces Clean and Dry.

－Security Terms

Warning: indicates that death or severe personal injury may

result if proper precautions are not taken

Caution: indicates that property damage may result if proper

precautions are not taken.

Contents

I. Overview········································································ 6

II. Intrinsic Error·································································· 6

III. Operating Error······························································ 7

IV. Other Technical Specifications·········································· 8

V. Product Structure···························································· 9

VI. Notes··········································································· 9

VII. Operation Instructions··················································· 10

VIII. Adjust the display························································ 12

IX. Battery replacement······················································ 12

I. Overview

SMG2000B Double Clamp Digital Phase Meter is specially designed for

measuring voltage, current and phase. It is characterized by high precision,

low price, portable hand-held and dual-channel input measuring. It’s easy to

measure the phase between U-U, I-I and U-I, identify the inductive/capacitive

circuit and the phase sequence of three-phase voltage, check the wiring group

of transformer, test the secondary circuit and busbar differential protection

system, display the phase relationship among the CT groups of a differential

protection system, and check if the wire of electric meter is correctly connected.

Under test, you do not need cut off the tested current which is inputted by

clamp-current transformer. When measuring the phase between U1 and U2,

the two input circuit loops are completely isolated, so it can completely avoid

short circuit and burning down the meter caused by misconnection. The

display of this device is high-contrast LCD screen, and the character in which

could be as high as 25mm, and can be freely rotated approximately 70 ° to

obtain the best visual effects.

The shell of the device is made of engineering insulating material,

together with a rubber anti-vibration protection casing for safety and reliability.

II. Intrinsic Error

1. Operating Conditions

1) Temperature:（23±5）℃

2) Relative humidity:（45～75）%

3) Wave forms of measured signal: Sine wave, β=0.02

4) Frequency of measured signal: 50±0.2）Hz

5) Position of Measured current carrying conductor in clamp jaw:

Optional position

6) Amplitude range of measured signal when measuring phase: 100～

220V, 0.5A～1.5A

7) External reference frequency electromagnetic interference: Should

be avoided

2. Limits of Intrinsic Error

1) AC Voltage（see Table 1）

Table 1：Error of AC Voltage

Measure range

Resolution

Limits of intrinsic error

20V

0.01V

±（1.2%RD+2）

200V

0.1V

±（1.0%RD+2）

500V

±（1.2%RD+2）

Input Impedance：All measure ranges input 2MΩ

2)AC current（see Table 2）

Table 2：Error of AC current

Measure range

Resolution

Limits of intrinsic error

200mA

0.1mA

±（1.0%RD+2）

1mA

10A

10mA

3) Phase

U-U、U-I、I-I（see Table 3）

Table 3：Error of Power-frequency Phase

Range

Resolution

Limits of intrinsic error

0～360°

1°

±3°

Loop impedance of input voltage when measuring phase U1-U2：40KΩ

III. Operating Error

1. Rated Operating Conditions

1) Temperature:（0～40）℃

2) Relative humidity:（20～80）%

3) Wave forms of measured signal: Sine wave, β=0.05

4) Frequency of measured signal:（50±0.5）Hz

5) Position of Measured current carrying conductor in clamp jaw:

optional position.

6) Amplitude range of measured signal when measuring phase:

Phase U1-U2: 30V～500V

Phase I1-I2: 10mA～10.00A

Phase U1-I2 or I1-U2: 10V～500V、10mA～10.00A

7) External reference frequency electromagnetic interference: Should be

avoided

2. Limits of Rated Operating Error

In item 1 Rated Operating Conditions, the limits of rated operating error

should not more than twice limits of intrinsic error.

IV. Other Technical Specifications

1. Display: three and half bits

2. Sampling Rate: 3 times per second

3. Power Supply: single 9V laminated battery, supply current is less than

5mA

4. Dimensions

Meter shell: 192x95x55mm

Clamp shell: 140×42×20mm

Clamp jaw: Φ7×9mm

5. Weight

Meter body: 280g

Measuring clamp: 2×200g

6. Storage Conditions

Temperature: －10℃～50℃

V. Product Structure

1.insulating protection casing

2.three and half bits LCD

3.ON/OFF button

4.measure range switch

5.current clamp jack（2 loops）

6.voltage input jack（2 loop）

7.current clamp jaw

8.current clamp jaw

9.down-lead of current clamp

10.crocodile clip（4 pieces）

11.test lead（4 pieces）

12.shorting stub（1 piece）

VI. Notes

1. Withstand Voltage

Parts between voltage input terminal and meter shell and parts between

the iron core and handle of the clamp-current transformer and secondary

windings can withstand 1000V/50Hz. Parts between the two voltage input

terminals can stand Sinusoidal AC Voltage 500V/50Hz for 1min when testing.

2. Insulation Resistance

Insulation resistance between meter circuit and meter shell is more than

or equals 10MΩ, insulation resistance between the two input terminals is also

more than or equals 10MΩ.

VII. Operation Instructions

Press the ON/OFF button; turn the measure range switch to choose the

correct testing parameters and range.

1. Measuring AC voltage

Turn the rotary switch to 500V in U1 region, and connect the measured

voltage into jack U1, you can measure. If the measured value is less than 200V,

you can directly turn the switch to 200V in U1 region to obtain better

measurement accuracy.

The two channels U1, U2 are provided with the same voltage test function,

so you can make the measurement through channel U2. Detailed methods

please refer to the operation of U1.

2. Measuring AC current

Turn the rotary switch to 10A in I1 region, and connect the down-lead of the

clamp-current transformer into jack I1, then clamp the measured circuit with

clamp jaw, you can measure. If the measured current is less than 2A, you can

directly turn the switch to 2A in I1 region to obtain better measurement

accuracy.

The two jacks I1, I2 are provided with the same current test function, so

you can make the measurement through jack U2. Detailed methods please

refer to the operation of I1.

3. Measuring phase angle between two voltages

When measuring the phase angle that U2 lags U1, turn the rotary switch to

parameter U1U2.Under measurement, you can turn the rotary switch clockwise

to different measure ranges in U1 region to measure input voltage U1, or turn

the rotary switch anticlockwise to different measure ranges in U2 region to

measure input voltage U2.

Note: When measuring phase, the marks U1, U2 around voltage input

jacks and the red "*" mark on clamp-current transformer are phases with the

same name end.

Table des matières

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