The DELTA4000 is an automatic 12 kV insulation power factor/tan delta test set designed for the immediate condition assessment of electrical insulation. In addition to traditional power frequency (50/60 Hz) testing, the DELTA4000 uses 1 Hz power factor/tan delta to enhance power frequency assessment of high voltage transformers, bushings, circuit breakers, cables, lightning arresters, and rotating machines. Using the same connection and software as power frequency tests, 1 Hz improves maintenance planning by reducing the need for historical trending and proprietary databases.
Two configurations make up the series:
DELTA4110 - comes with an external computer (not included) and consists of the DELTA4100 control unit and DELTA4010 high voltage unit
DELTA4310A - comes with a touch screen display interface and an on-board computer, PowerDB software, and printer. It allows you to connect to and control the MWA300, TTR300/310E, MTO300, MLR10, and some Megger insulation resistance instruments
The high power variable frequency design generates its own test signal independent of line frequency quality, and the hardware design uses the latest technology available for digital filtering of the response signal. As a result, the DELTA4000 series produces reliable results and stable readings in the shortest time with the highest accuracy, even in high interference substations.
The DELTA4000 series operates with PowerDB software for automatic testing and reporting or with Delta Control software for real-time manual testing.
Measurements include voltage, current, power (loss), power factor/tan delta, inductance, power factor, and capacitance. The test results are automatically stored in the computer and can also be downloaded directly to a USB drive or a printer.
Key Features
Immediate power frequency (50/60 Hz) insulation condition assessment with 1 Hz power factor/tan delta
Precise temperature correction based on insulation deterioration with patented Individual Temperature Correction (ITC)
Guided test forms streamline testing and condition assessment of critical high voltage assets
Simplified connection to bushing taps using quick disconnect clamps and 4 mm banana plug sockets
Portable, lightweight, and rugged two-piece design
Accurate measurements under high noise conditions (765 kV substations)
Industrial 300 mm (12 in) touch screen controller option
Specification
Input Power
90 - 264 V 45 - 66 Hz
16 A max
No loss in performance when used with portable generator.
Output Voltage
0 to 12 kV, continuously adjustable
Test Frequency Range
45-70 Hz (12 kV)
15-400 Hz (4 kV)
1-505 Hz (250V)
0.0001 Hz maximum resolution
Output Power
3.6 kVA
Output Current
300 mA (4 minutes)
200 mA (30 minutes)
100 mA (continuous)
The power supply capacity can be expanded to 4 A at 12 kV using the optional Resonating Inductor, (Cat. No. 670600-1).
Measuring Ranges
Voltage
25 V to 12 kV, 1 V resolution
Current
0 to 5 Amps, 0.1 μA maximum resolution. The measurement can be corrected to either 2.5 kV or 10 kV equivalents.
Capacitance: 0 to 100 μF, 0.01 pF maximum resolution
Inductance: 6 H to 10 MH, 0.1 mH maximum resolution
Power factor: 0-100% (0-1), 0.001% maximum resolution
Dissipation factor: 0-100 (0-10,000%), 0.001% maximum resolution
Watt Loss
0 to 2 kW, actual power, 0 to 100 kW when corrected to 10 kV equivalent. 0.1 mW maximum resolution. The measurement can be corrected to either 2.5 kV or 10 kV equivalents.
Temperature Correction
Individual temperature correction
from 5°C to 50°C insulation test temperature to 20°C reference
Standard tables
As by international standards and manufacturers’ data
Accuracy
Voltage ±(1% of reading) Current ±(1% of reading)
Capacitance ±(0.5% of reading + 0.1 pF) Inductance ±(0.5% of reading + 1 mH)
Power Factor and Dissipation Factor ±(0.5% of reading + 0.02%) Watt Loss ±(1% of reading + 1mW)
Frequency ±0.005% of reading