YOKOGAWA 99025 User Manual

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User’s
Manual

99025
Clamp Adapter

IM 99025

Precautions for Safe Use of the Instrument

When handling the instrument, ALWAYS observe all of the cautionary notes on
safety given below. Yokogawa M&C Corporation is not at all liable for damage
resulting from misuse of this product by the user that is contrary to these cautionary
notes.

The instrument and this manual use the following safety symbols:

Danger! Handle with Care.
This symbol indicates that the operator must refer to an explanation in
the instruction manual in order to avoid the risk of personal injury o
death and/or damage to the instrument.
Double Insulation
This symbol indicates double insulation.
AC Voltage/Current
This symbol indicates AC voltage or current
Ground
This symbol indicates ground (earth)

WARNING

Indicates that there is a possibility of serious personal injury or loss of life if the
operating procedure is not followed correctly and describes the precautions for
avoiding such injury or loss of life.

CAUTION

Indicates that there is a possibility of serious personal injury of damage to the
instrument if the operating procedure is not followed correctly and describes the
precautions for avoiding such injury or damage.

NOTE

Draws attention to information essential for understanding the operation and
features.

1st Edition: Apr.2003(MC)

IM 99025

WARNING

● Never make measurement on a circuit above 300V AC.

● Do not use the instrument in an atmosphere where any flammable or explosive

gas present.

● Avoid using the instrument if it has been exposed to rain or moisture or if your
hands are wet.

● Do not exceed the maximum allowable input of any measurement range.

● As to current measurement of more than 1000A, do not make measurement

continuously.

The main unit is heated, so there is danger which damages safety.

● Do not use the instrument if there is any damage to the casing or when the
casing is removed.

● Do not install substitute parts or make any modification to the instrument.

WARNING

To avoid damage to the instrument or electric shock!
The restrictions on the maximum voltage level for which the 99025 testers can be
used, depend on the over-voltage categories specified by the safety standards.
These category specifications are formulated to protect operators against transient
impulse voltage in power lines.

Function

A

Over-voltage category I (CAT.I):

Signal level, special equipment or parts of equipment, telecommunication, electronic etc., with
smaller transient over-voltages than CAT.II.

Over-voltage category II (CAT.II)

Local level, appliance, portable equipment etc., with smaller transient over-voltages than CAT.III.
Over-voltage category III (CAT.III):
Distribution level, fixed installation, with smaller transient over-voltages than CAT.IV.

Maximum Allowable Input

OVERVOLTAGE CATEGORY III

Measuring circuit voltage : AC 300V rms

AC 3000A rms

CATION

Do not expose the instrument to the direct sun, extreme temperatures or dew fall.

NOTE

● If equipment generating strong electromagnetic interference is located nearly,

the testers may malfunction.

1. Features

Model 99025 are designed to increase the measuring capability of your clamp-on
testers. With the use of the Clamp Adapter, you can not only extend current
ranges, but clamp on a conductor of a larger diameter.

2. How to Use

(1) Clamp your clamp-on tester on the pick-up coil of the Clamp Adapter. Then

clamp the Clamp Adapter on the conductor as shown bellow.

(2) When you use Clamp Adapter for power or power factor measurement;

Clamp your clamp-on tester on the pick-up coil of the Clamp Adapter,
assuming that the arrow mark on the pick-up coil points the load side.

Then clamp the Clamp Adapter on the conductor so that the arrow mark on

the Clamp Adapter jaw points the load side of the conductor.

Conductor

Transformer Jaws

Arrow Mark

Clamp Adapter

Arrow Mark

Clamp-on Tester

Pick-up Coil

3. SPECIFICATIONS

Measuring Range 0 to 3000A AC
Input / Output 10 : 1
Accuracy ±2% of input ±0.5A
Withstand Voltage 3700V AC for one minute
Dimensions Clamp Adapter except Pick-up coil

45(W) X 40(H) X 10(D)mm
Weight Approx. 750g
Conductor Size 100mm max. Diameter

Frequency 50Hz / 60Hz
Duty Cycle Continuous for 0 to 1000A

Safety Standards EN 61010-1
EN 61010-2-032
AC 300V CAT. III / AC 600V CAT. II, Pollution degree2
Accessories Carrying Case (Model 93035) 1

After-sales Service
Should any failure occur while you are using the tester, follow the instructions
given below. If the adapter still fails to operate correctly and needs repair,
contact the vendor from whom you purchased the instrument or the nearest
Yokogawa M&C sales office.

150(W) X 317(H) X 33(D)mm
Pick-up coil

100 X 150mm Bus-Bar

10 minutes for 1000 to 1500A
30 seconds for 1500 to 3000A

YOKOGAWA M&C CORPORATION
International Sales Dept.

2-9-32 Nakacho, Musashino-shi, Tokyo, 180-8750 Japan
Phone: [phone] Facs imile: 81-422-55-8654

YOKOGAWA CORPORATION OF AMERICA (U.S.A.)

Phone: [phone] Facs imile: 1-770-251-2088

YOKOGAWA EUROPE B. V. (THE NETHERLANDS)

Phone: [phone] Facsimile: 31-334-64-1610

YOKOGAWA AMERICA DO SUL S. A. (BRAZIL)

Phone: [phone] Facsimile: 55-11-5681-1274

YOKOGAWA ENGINEERING INSTRUMENTS KOREA CORPORATION (KOREA)

Phone: [phone] to -0664 Facsimile: 82-2-551-0665

YOKOGAWA AUSTRALIA PTY. LTD. (AUSTRALIA)

Phone: [phone] Facs imile: 61-2-9888-1844

YOKOGAWA BLUE STAR LTD. (INDIA)

Phone: [phone] Facs imile: 91-80-227-4270

LTD. YOKOGAWA ELECTRIC (RUSSIAN FEDERATION)

Phone: [phone] Facs imile: 7-095-737-7869

計測機器営業部

〒180-8750 東京都武蔵野市中町 2-9-32
電話：[phone] ファクシミリ：0422-55-8953

関西支店

〒564-0063 大阪府吹田市江坂町 1-23-101 大同生命江坂ビル 10 階
電話：[phone] ファクシミリ：06-6368-7045

中部支店

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電話：[phone] ファクシミリ：052-581-7664

広島営業所

〒730-0037 広島市中区中町 8-12 広島グリーンビル８階
電話：[phone] ファクシミリ：082-541-4567

九州営業所

〒812-0037 福岡市博多区御供所町 3-21 大博通りビジネスセンター7 階
電話：[phone] ファクシミリ：092-262-5741

本社

〒180-5679 東京都武蔵野市中町 2-9-32
電話：[phone] ファクシミリ：0422-51-8455

KIM1JE-2003.2