T&R PT18-10 mk2 Mode d'emploi
OPERATING AND MAINTENANCE MANUAL
Product:
High Voltage DC Cable Test Set
Type:
PT18-10 mk2
DESIGNED AND MANUFACTURED BY:
T & R Test Equipment Limited
15-16 Woodbridge Meadows, Guildford, Surrey, GU1 1BJ, United Kingdom
Fax.: 01483 511229 Web: www.trtest.com
TRUSTED & RELIABLE
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GENERAL SAFETY STATEMENT
WARNING
The following safety precautions should be reviewed to avoid injury to the user and damage to the product (and
other products connected to it). To avoid potential hazards only use this product as specified.
•Only suitably qualified personnel should use this equipment. Servicing of this product should only
be carried out by suitably qualified service personnel.
•The high voltage generated by this unit is extremely dangerous and may be fatal.
To Avoid Fire Hazards and Personal Injury
•Use the correct power supply lead. Only use a suitably rated and approved power supply lead for the
country of use.
•Ensure that systems that the unit is to be connected to are dead.
•Do not connect and disconnect leads whilst outputs are switched on.
•Ensure that the product is grounded. To avoid electric shock it is essential that the grounding conductor is
connected to the earth ground. An additional earth terminal is provided on the unit that must be connected to
a local earth. Ensure that the unit is properly grounded before making any connections to inputs or outputs.
•Terminal ratings must be observed to prevent fire hazards and risk of injury to the operator. Consult the
product manual for ratings information before making connections to any terminal.
•It is ESSENTIAL to consult the product manual for rating information before making any connection to a
terminal or terminal group marked with a warning triangle.
•Only use fuses of a type and rating specified for this product.
•Do not operate the unit out of its case or with any covers or panels removed.
•Do not touch exposed connections and components when power is present.
•Do not operate the product if any damage is suspected. Refer the unit to qualified service personnel to be
checked.
•Do not operate the unit in wet or damp conditions
•Do not operate the unit in an explosive atmosphere
If any further queries occur regarding the usage and maintenance of the equipment
detailed in this manual, please refer these to the supplier of the equipment in the first
case or to:
T & R Test Equipment Limited
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SAFETY TERMS AND SYMBOLS
The following safety symbols appear on the equipment:
CAUTION/WARNING –Refer to manual
DANGER –High voltage
Mains off
Mains on
The following safety symbols appear in this manual:
CAUTION
This action or procedure may be dangerous if not carried out
correctly, and may cause damage to the equipment or connected
equipment.
WARNING
This action or procedure may be cause injury or death to the
operator or other personnel if not carried out correctly using
applicable safety procedures.
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HIGH VOLTAGE SAFETY
WARNING
It is essential to follow safe working procedures when working with high voltage. Information on accepted codes
of practice should be obtained from your local heath and safety regulatory body.
IEEE standard 510-1983 (IEEE Recommended Practices for Safety in High-Voltage and High-Power Testing)
provides a working framework for establishing safe procedures, but must be read in conjunction with local
regulations and accepted codes of practice.
The following excerpts are taken from IEEE 510
•All ungrounded terminals of the test equipment or apparatus under test should be considered as energised.
•Common ground connections should be solidly connected to both the test set and the test specimen. As a
minimum, the current capacity of the ground leads should exceed that necessary to carry the maximum
possible ground current. The effect of ground potential rise due to the resistance and reactance of the earth
connection should be considered.
•Precautions should be taken to prevent accidental contact of live terminals by personnel, either by shielding
the live terminals or by providing barriers around the area.
•The circuit should include instrumentation for indicating the test voltages.
•Appropriate switching and, where appropriate, an observer should be provided for the immediate de-
energisation of test circuits for safety purposes. In the case of dc tests, provisions for discharging and
grounding charged terminals and supporting insulation should also be included.
•High-voltage and high-power tests should be performed and supervised by qualified personnel.
•Consideration should be given to safety regulations which may apply to specific circumstances; for example,
HSE, company, or government regulations.
•In the use of signal-gathering equipment, each device should be used in such a manner that it will not
present a personnel hazard should it inadvertently become a part of the high-voltage circuit, or fail to function
properly.
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CONTENTS
1. DESCRIPTION OF EQUIPMENT 9
1.1 Electrical Specification 9
1.2 Front Panel Layout 10
1.3 Output Voltage Control 10
1.4 Overload Protection 10
1.5 High Voltage Output Cables and Connectors 11
1.6 Metering 11
1.6.1 kV Meters 11
1.6.2 mA Meters 11
1.7 Discharge and Earthing 12
1.7.1 Automatic Discharge/Earthing 13
1.7.2 Manual Earthing Using DP20 Discharge/Earthing Probe 13
1.8 Construction 13
1.9 Storage 14
2. OPERATION 15
2.1 Safety 15
2.1.1 Installation 15
2.1.2 Operation 16
2.1.3 Inspection 17
2.2 Connection and Testing 18
2.2.1 Connection Sequence 18
2.2.2 Testing Sequence: 20
2.2.3 Disconnection Sequence: 20
3. MAINTENANCE 21
4. STANDARD ACCESSORIES 23
5. PERFORMANCE SPECIFICATION 25
6. REVISION 27
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1. DESCRIPTION OF EQUIPMENT
1.1 Electrical Specification
Supply requirements 115V/230V10% auto-selecting
50/60Hz
600VA maximum
Output voltage 0-18kVdc with respect to earth
(0-36kV between outputs, centre earthed)
Output current 5mA continuous from each output
10mA from each output with a duty cycle of 5 minutes
on/15 minutes off
Output earth connection The earthy end of the high voltage outputs is connected
to the earth system of the equipment.
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1.2 Front Panel Layout
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8
0
10
4
6
0
2
4
6
8
10
P
ABC D E
LK
MF
J
NH G
Figure 1 PT18-10 Front panel
A Positive HV output with dust cap
H Output HV on pushbutton
B Positive kV meter with dust cap
J mA range select pushbutton
C Positive mA meter
K Negative mA meter
D Supply on/off key switch
L Negative kV meter
E Mains inlet and fuse
M Negative HV output
F Output control
N Earth terminal
G Output HV off pushbutton
P HV Output blanking plug
1.3 Output Voltage Control
The voltage from the equipment is controlled by the output control on the front panel. To increase the
output voltage turn the control knob in a clockwise direction, and to decrease the output voltage turn the
knob anti-clockwise.
Note: The output can not be energised unless the regulator knob is set to zero.
1.4 Overload Protection
The unit is fitted with an F5A fast acting fuse which protects the incoming mains supply to the unit.
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