The instrument enables simultaneous measurement of the parameters of time, travel, and speed of movable parts, measurement of the time until closing/opening of controlled contacts and registration of instantaneous values of currents and voltages of control electromagnets.
High accuracy of measurements of time characteristics (±0.1 ms), travel and speed characteristics are ensured by digital angular and linear movement transducers with a resolution of 0.09° and 0.5 mm.
Equipped with a power switch to control drives of switching devices, both DC and AC, allows the instrument to perform both simple operations and complex cycles, including life tests
PKV/М7 is a self-contained instrument for diagnostics and data analysis that requires no any additional equipment. Optionally, it can operate under PC control as a measuring unit or as a carrier of data that can be copied directly to PC or USB Flash drive.
The diagnostic results are displayed in a table with measured and calculated parameters for each operation in the cycle (when processing measurement results for complex cycles, the device automatically breaks down the cycle into simple operations). The tables provide such data as total break time and closing time of circuit breaker, full travel, snatch gap, bouncing in travel, overshot, rebound, closing speed, bouncing in time, and many others.
In addition to tables with measured parameters, more detailed information on the status of the circuit breaker can be extracted from the recorded graphs that are navigated using cursors and scaling.
The instrument registers:
- dependence of speed on time and travel;
- dependence of currents and voltages of electromagnets on time and travel;
- diagrams of closing/opening processes of the contacts
| GENERAL FEATURES | |
| Number of control channels of circuit breaker contacts | 4 |
| Measuring and recording range of time intervals | 0.001 – 5.2 s |
| Accuracy | ± 10-4 (1 + tx) s |
| Measuring range of linear movement | 1 – 900 mm |
| Accuracy | ± (1 + 0.0005 * Sx) mm |
| Measuring range of angular movement | 0.09◦ – 360◦ |
| Accuracy | ± (0.2 + 0.001 * ax)° |
| Measuring range of speed | 0.002 – 20 m/s |
| Accuracy in the range 0.02 – 10 m/s | ±2 % |
| Power switch cycles | O, C, O-P-C, C-Tdo-O, O-P-C-Tdo-O |
| Maximum switching current | 14 А |
| Input voltage measurement range “Control module voltage” | ±350 V |
| Voltage measurement range by “Analog input” channel | 0 – 12 (unipolar mode) V |
| ±6 (bipolar mode) V | |
| “Analog input” channel resistance measurement range | 0 – 160 Ω (output current 60 mA) |
| 0 – 2500 Ω (output current 4 mA) | |
| PC connection | USB host, LAN, RS-232 and RS-485 |
| Display | LCD monochrome graphic 320 x 240 pix |
| Power consumption | < 60 W |
| Power supply (mains voltage) Note: To supply power to high-voltage circuit breaker drive that operates on direct current, a power supply cable adapter is used – by request. |
~ 100-242 V, 49.5-60.5 Hz = 100-340 V |
| Dimensions | 360 х 290 х 165 mm |
| Instrument weight | 7 kg |
| Environmental protection | IP 64 (instrument cover closed) IP 40 (instrument cover open) |
| Operating temperature range | from -20 °C to +40 °C |
| Warranty period | 13 months |
| Recommended calibration interval | 1 year |
| Interface and user manual language | English |
