90174.1.03 Instruction Manual 250V option TR-MARK III Page 1 of 7
TR-MARK III - 250V Option
(TRO-250)
Instruction Manual
Raytech GmbH
Oberebenestrasse 11
CH 5620 Bremgarten
Switzerland
90174.1.03 Instruction Manual 250V option TR-MARK III Page 2 of 7
Contents
1 Safety Precautions.......................................................................................................................... 3
2 Operation ........................................................................................................................................ 5
2.1
Creating a 250V Transformer Profile .................................................................................................... 5
2.2
Changing Test Voltage in Main Screen ................................................................................................ 5
2.3
Import and export of 250V Transformer Profiles................................................................................... 6
3 Technical Specification ................................................................................................................... 7
90174.1.03 Instruction Manual 250V option TR-MARK III Page 3 of 7
1 Safety Precautions
The following safety precautions must be observed during all phases of operation, service
and repair of this instrument. By purchasing this equipment the purchaser assumes all
liability for the operation and use of this equipment. The intended use of the instrument, its
design and manufacture, is to be conducted within the precautions or other specific warnings
located within this manual. Failure to comply with these precautions and other specific
warnings violates safety standards of design, manufacture, and intended use. Raytech
GmbH assumes no liability for the operation and use of this equipment.
SAFE OPERATION:
Only qualified knowledgeable persons should be permitted or attempt to operate this test
equipment. All test personnel should fully familiarize themselves with the correct application
and operation of this and all test equipment prior to operation. Persons directly and indirectly
engaged in the operation of this test equipment should keep clear of all high voltage
apparatus while conducting tests and measurements.
DO NOT TOUCH TEST LEADS WHILE TEST VOLTAGE IS ON
Your TR-MARK III is equipped with 100V and 250V test voltage. These voltages can be
dangerous to humans, animals and equipment.
WARNING!
⇒ Never touch test Leads of TR-MARK III while test voltage is on
Check safety indicator on front panel.
BEFORE APPLYING POWER:
Do not vary the input power source voltage level (IE...Connected to a variable AC power
source).
The TR-MARK III auto-senses the input power from the mains plus from 100 to 240 vac
50/60Hz. Varying the input voltage will cause the test voltage to vary and result in a higher or
lower test voltage than indicated.
KEEP AWAY FROM LIVE CIRCUITS:
Operating personnel must not remove instrument covers. Component replacement and
internal adjustments must be made by qualified service personnel. Do not replace
components with power cable connected. To avoid injuries, always disconnect power,
discharge circuits, and remove external voltage sources before touching components.
WARNING!
⇒ Never connect TR-MARK III to a transformer, which is energized or
connected to power lines.
90174.1.03 Instruction Manual 250V option TR-MARK III Page 4 of 7
GROUND THE INSTRUMENT:
To minimize shock hazard, the instruments Ground Terminal must be connected to a
properly grounded receptacle. In many cases, the quality of the safety ground provided by
the power cord does not fulfil safety needs. Also the power cord supplied with the equipment
must be connected an electrical receptacle with an electrical ground (safety earth ground).
Non grounded instruments are dangerous and may cause instrument damage.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE:
Do not operate the instrument in the presence of flammable gases or fumes.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT:
Because of the danger of introducing additional hazards, do not install substitute parts or
perform any unauthorized modification to the instrument. Return the instrument to a Raytech
service department for service to ensure proper operation and that safety features are
maintained.
Instruments, which appear damaged or defective, should be made inoperative and secured
against unintended operation until they can be repaired by qualified service personnel.
90174.1.03 Instruction Manual 250V option TR-MARK III Page 5 of 7
2 Operation
NOTE
⇒ The 250V option does not change anything on the operation concept
of TR-MARK III. The extensions are described in this chapter.
2.1 Creating a 250V Transformer Profile
The procedure of creating a new transformer remains exactly the same as with the common
TR-MARK III. The main difference is the additional 250V button when test voltage is chosen.
2.2 Changing Test Voltage in Main Screen
As with a standard TR-MARK III, just touch the test voltage button, and a selection including
250V will appear.
Aditional
250V button
90174.1.03 Instruction Manual 250V option TR-MARK III Page 6 of 7
2.3 Import and export of 250V Transformer Profiles
If you are using a firmware version 3.0.97 or higher on a TR-MARK III with the 250V option,
profiles with 250V test voltage can be imported and exported as usual.
When using an older firmware version, or a common TR-MARK III, the test voltage of a 250V
transformer profile will be reduced to an available voltage automatically.
NOTE
⇒ Test Voltage will automatically be changed, if you are importing a 250V
transformer profile to a common TR-MARK III or if you are using a
firmware version prior to 3.0.97.
90174.1.03 Instruction Manual 250V option TR-MARK III Page 7 of 7
3 Technical Specification
NOTE
⇒ All specifications not mentioned bellow are equal to the standard
specifications of
TR-MARK III.
Ratio
Resolution: 5 Digits
U
test
Range Accuracy
250V
0.8 … 5000 ±0.06% Rdg ±1 LSD
5001 … 10’000 ±0.1% Rdg ±1 LSD
10’001 … 32’500 ±0.3% Rdg ±1 LSD
32’501 … 40’000 ±0.4% Rdg ±1 LSD
Phase Angle
Phase Range:
±90 Degree, Resolution: 0.01°
U
test
TR-Range Accuracy
250V
0.8 ... 600 ±0.05°
601 … 5000 ±0.10°
5001 ... 10’000 ±0.15°
10’001 ... 32’500 ±0.40°
32’501 ... 40’000 ±0.50°
Current
Resolution: 0.1 mA
U
test
Range Accuracy
250V
0 ... 400mA ±1 mA
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