Doble Engineering M4000

PRODUCT DESCRIPTION

The M4000 from Doble is the leading instrument for evaluating the condition of high-voltage power apparatus. The instrument evaluates the integrity of high-voltage substation apparatus by measuring the power factor/tangent delta and a number of other values. It also measures capacitance, to evaluate physical changes to the apparatus. With a maximum output of 300 mA at 10 kV, the Doble M4000 offers high charging current, allowing you to run single-phase exciting current tests at higher voltages, increasing the turn-to-turn stress.
The M4000 has the power to test a wide range of apparatus, making it highly versatile. It also uses a patented technique called Line Frequency Modulation, in which measurements are made at a frequency above and below the system frequency, to eliminate the effect of electrostatic interference. The result is highly accurate and repeatable measurements. Even a small change in a measurement becomes a reliable diagnostic indicator.

Power Specifications

• Input Power:
  • 95-264 VAC
  • 47 to 63 Hz with no loss in performance when used with portable generators.
  • 16 A max at 110 V
  • 10 A max at 220 V
• Output Voltage: Range 0 to 12 kV
• Output Power: 3k VA
• Output Current: 100 mA continuous at 10 kV 200 mA > 30 minutes at 10 kV 300 mA > 4 minute at 10 kV
• Output Frequency: 45 to 70 Hz
• Resolution: 0.1 Hz

Measurement Range and Resolution:

• Test Current:
  • Range: 0 to 5.0 A auto ranging
  • Resolution: 0.1 µA
• Power Factor/Tan d:
  • Range:
    • 0 to ±100.00% PF
    • 0 to ±999.99% Tan d
  • Resolution: 0.01% (0.0001)
• Capacitance:
  • Range: 0 to 100 µF
  • Resolution: 0.01 pF
• Inductance:
  • Range: 6H to 10MH
  • Resolution: 0.01 mH
• Watts:
  • Range: 0 to 2 kW, actual power
  • Resolution: 0.5 mW
• Operating Temperature: -20° to 50° C / -4° to 122° F
• Dimensions 10.3 H x 20 W x 25.3 D (inch) 26 H x 50.8 W x 64.1 D (cm)
• Weights 95 lb / 43 kg