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UA EN

DPA 75 C Oil breakdown voltage tester

The DPA 75 C automatically tests the electrical breakdown strength of insulating liquids. Test sequences can be accomplished easily and fully automatically in compliance with all international and national standards. With reliable, informative test results it is possible to determine the exact condition of the insulating material and initiate any necessary measures, e.g. preparation of transformer oil.

Manufactory: BAUR (Austria).

Description

The DPA 75 C is designed especially for mobile use and for daily continuous operation in laboratories. The robust and sophisticated design guarantees safe and failure-free operation for several hundred thousands of oil sample measurements.

Features
  • Test voltages up to 75 kVrms
  • Reliable, reproducible measurement results across multiple measurements thanks to short switch-off time < 10 μs
  • Clear breakdown detection by means of very precise measurement principle performed directly in the HV unit and RBM technology
  • Fully automatic test sequences for 19 common test standards around the globe and spot tests
  • Easy creation of user-specific test sequences
  • Built-in sensor for measuring the temperature of the insulating liquid
  • Precise adjustment of standard electrode distances
  • Automatic self-test with HV output voltage test each time you start
  • EMC screen for preventing damage to electronic devices nearby
  • Comprehensive safety concept, incl. high voltage shutdown through hood contacts
  • User interface available in 14 languages
  • Ergonomic operating unit with oil-proof membrane keypad, easy to read LC colour display and integrated printer

Insulating oil testing

Output voltage

0 – 75 kVrms symmetrical

Voltage slew rate

0.5 – 10 kV/s

Switch-off time

< 10 μs

Voltage slew monitoring

Real Breakdown Monitoring (RBM)

Accuracy

0 – 75 kV ± 1 kV

Resolution

0.1 kV

Internal temperature recording of the oil sample   

0 – 99°C

Temperature resolution

1°C

Test standards

ASTM D1816, ASTM D877, BS EN 60156, CEI EN 60156,
CSSR RVHP:1985, IEC 60156, IRAM 2341:1972, JIS C2101:1999,
PN 77/E-04408, SEV EN 60156, UNE EN 60156, NF EN 60156,
SABS EN 60156, VDE 0370-5:1996, AS 1767.2.1

User-specific test sequences

10

General

Input voltage

90 – 264 V (50/60 Hz) or DC 12 V

Power consumption

max. 70 VA

Rechargeable battery (option)

lead-acid battery, 2 x 6 V / 6.5 Ah

Battery life (option)

approx. 8 hours (self-sufficient operation)

Display

colour LCD (approx. 3.5”), screen resolution 320 x 240 pixels

Data interface

USB 2.0 (type B plug),
BAUR Report Manager external USB interface (type A plug)

Printer

matrix printer, 24 characters, 57 mm plain paper

Ambient temperature (operational)

-10 to +55 °C

Storage temperature

-20 to +60 °C

Humidity

non-condensing

Dimensions (W x H x D)

476 x 372 x 340 mm (closed)
476 x 635 x 420 mm (open)

Weight

approx. 27 kg (without battery)
approx. 29 kg (with battery)

Degree of protection

IP32


Standard accessories:

  • DPA 75 C
  • 1 x glass test vessel (test standard as selected)
  • Magnetic stirrer
  • Lifting stick for magnetic stirrer
  • Setting gauge
  • Carrying strap
  • Mains supply cord
  • User manual

Optional accessories:

  • Integrated lead-acid battery 2 x 6 V / 6.5 Ah
  • Protective bag
  • Transport case
  • Magnetic stirrer
  • Lifting stick for magnetic stirrer
  • Setting gauge 1 mm acc. to ASTM D1816
  • Setting gauge 2 mm acc. to ASTM D1816
  • Setting gauge 2.5 mm acc. to IEC 60156
  • Setting gauge 2.54 mm acc. to ASTM D877
  • Setting gauge 4 mm acc. to BS EN 60156
  • Setting gauge 5 mm acc. to SEV EN 60156
  • Face pin wrench for disassembling the test vessel
  • Paper roll for printer, 57 mm width, Ø 30 mm
  • Ink ribbon (blue) for printer
  • Glass test vessels 0.4 litres acc. to IEC 60156 Fig. I or Fig. II, ASTM D1816 or ASTM D877
  • Pair of electrodes acc. to IEC 60156 Fig. I or Fig. II or ASTM D877
  • BAUR Report Manager – External USB interface for measurement data management
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