The Doble M4000 Power Factor/Tan-Delta Instrument is 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.
The M4000 diagnostic system evaluates the integrity of high voltage substation apparatus by measuring the power factor/tangent delta along with a number of other essential values. It also measures the capacitance to evaluate physical changes to the apparatus.
| KEY FEATURES |
| 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. |
| BENEFITS |
| Power Factor Testing to confirm insulation integrity and quality |
| Capacitance Testing to measure physical changes that may have occurred to the apparatus |
| Turns Ratio Testing to detect shorted turns or winding damage |
| Leakage Reactance/Short Circuit Impedance Testing to evaluate winding deformation |
| Single Phase Excitation Current Testing to evaluate the transformer magnetizing circuit |
| Capacitor bank testing using the M4110, and the M4140 detects deteriorating or failed capacitors within a bank. |
| 45-70Hz output selectable |
| Maximum Test Current: 300mA at 10kV |
| Maximum Test Voltage: 12kV |
| Measures Power Factor for all impedances (capacitive, resistive, and inductive) |
| SPECIFICATIONS |
|
| Model: M4000 |
|
| Feature | Parameter |
| 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 |
