Doble M4000 Power Factor/Tan-Delta Instrument

The Doble M4000 Power Factor/Tan-Delta Instrument is the leading system for evaluating the condition of high voltage power apparatus. The Doble M4000 is for field and factory acceptance, preventive-maintenance, and emergency diagnostic testing of all types of electrical power apparatus insulation to detect changes, and possible failure hazards, prevents loss of service by permitting orderly repair or reconditioning of defective insulation. It sets the standard for accuracy, reliable test results, and intelligent diagnostics for customers worldwide.

Product Info Related Solutions

Power	Output Voltage	0 to 12 kV ac
	Output Current	100 mA continuous at 10 kV 200 mA > 30 minutes at 10 kV 300 mA > 4 minutes at 10 kV
	Output Power	3 kVA
	A.C. Input	95-264 V AC 47 to 63 Hz 16 A max at 110 V, 10 A max at 220 V
Capacitance	Range	0 to 100 μF
	Resolution	0.01 ρF
	Accuracy	± 0.5% of reading, ± 1 ρF
Test Frequency	Range	45 to 70 Hz independent of input signa
	Resolution	0.1 Hz
	Accuracy	±1% of reading

Totally eliminates substation signal interference with Doble's patented Line Frequency Modulation technology
Generates its own clean test signal for the most reliable and repeatable results
The highest power to better replicate in service condition
Self-calibrating in the field, so it's always accurate
Advanced digital technology takes accuracy to new levels
Automated setup eliminates errors
Automated setup eliminates errors
All records are presented in a format that is easy to read, save and print.
DTA Web provides an on-line database of test results, complete with powerful analysis tools.