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OPERATING AND MAINTENANCE MANUAL
Product:
Type:
DESIGNED AND MANUFACTURED BY:
T & R Test Equipment Limited
15-16 Woodbridge Meadows, Guildford, Surrey, GU1 1BJ, United Kingdom
Telephone:
01483 207428
Fax.:
01483 511229
TRUSTED & RELIABLE
High Voltage DC Cable Test Set
PT15-10s
e-mail: sales@trtest.com
Web:
www.trtest.com
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Summarization of Contents
GENERAL SAFETY STATEMENT
To Avoid Fire Hazards and Personal Injury
Highlights precautions to avoid fire hazards and personal injury during operation.
1. DESCRIPTION OF EQUIPMENT
1.1 Electrical Specification
Details supply voltage, power requirements, output voltage, charging current, and current availability table for different load types.
1.2 Output Voltage Control
Explains how the output voltage is controlled from zero using a regulating transformer and a front panel knob.
1.3 Overload Protection
Describes the fuses and magnetic overload relay protecting the instrument's mains supply and outputs.
1.4 High Voltage Output Cable
Details the 5M long high voltage output cable, its connectors, cable type, and de-mountable plugs.
1.5 Metering
Explains the output kilovolt and milliampere meters, including their ranges and how to change ranges.
1.6 Automatic Earthing
Describes the automatic discharge system and its function in discharging stored energy.
1.7 Manual Earthing Using DP20 Discharge/Earthing Probe
Details the specification and use of the DP20 discharge/earthing probe for manual earthing.
1.8 Construction
Describes the unit's housing, chassis, and the location of controls and sockets.
1.9 Storage
Provides guidelines for storing the PT15-10s in a dry environment and precautions regarding condensation.
2. OPERATION
2.1 Supply Voltage Selection
Explains how to select the correct supply voltage (240V or 115V) using the fuse drawer mechanism.
2.2 Front Panel Control Functions
Details the function of each control on the instrument's front panel, including switches, push-buttons, and lamps.
2.3 Testing Procedures and Safety Precautions
Covers essential safety precautions, connection sequence, testing sequence, and disconnection sequence for operating the equipment.
3. MAINTENANCE
3.1 General Maintenance and Cleaning
Emphasizes the need for keeping the unit and accessories clean and mentions the unit requires little maintenance.
3.2 Voltage Regulator Brush Check
Advises checking the voltage regulator carbon brush condition for wear and pressure.
3.3 Regulator Brush Replacement Guidance
Provides instructions on replacing worn voltage regulator carbon brushes.
3.4 Track Cleaning and Surface Restoration
Details cleaning the regulator track, including using fine sandpaper if eroded, and subsequent cleaning.
3.5 High Voltage Lead Storage and Protection
Instructs on storing HV leads carefully and ensuring protective covers are fitted.
3.6 Output Socket Bung Fitting
Reminds users to fit the protective bung on the output socket when the equipment is not in use.
3.7 Earthing Probe Cable Inspection
Suggests physically checking the condition of the earthing probe's cable and tags.
4. STANDARD ACCESSORIES
4.1 Supplied Spare Fuses
Lists the specific spare fuses provided with the equipment (F3.15A and F5A).
4.2 List of Included Equipment Items
Enumerates all standard accessories provided with the PT15-10s, such as leads, probes, and manual.
5. OVERALL PERFORMANCE SPECIFICATION
5.1 Insulation Resistance Specification
Specifies the insulation resistance requirement of not less than 10 Megohms between Mains Input to Frame.
5.2 Applied Voltage Test Details
Details the applied voltage test, which involves mains input to frame at 2 KV RMS for 1 minute.
5.3 Flashover Test Procedure
Outlines the flashover test, consisting of 5 flashovers at 15kV DC direct to earth.
5.4 Normal Voltage Test Conditions
Describes the normal voltage test conditions, which is 15kV DC on no load for 30 minutes.
5.5 Instrument Accuracy Specifications
States the accuracy for output kilovolt and milliampere meters, specified as ±1¼% and ±2½% of FSD respectively.
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