Specification of PD-MIMS Unit
PDSurveillantTM: PD-MIMS
PD-MIMS (Motor Insulation Monitoring System) detects partial discharge (PD) coming from the inside of high voltage motors and generators, the PD signal coupling in each phase (A, B, C Phase) using capacitor coupler. This system executes the surveillance and canalization of insulation condition of the high voltage motors and generators through QM/NQN analysis.
PD-MIMS provides user friendly software which allows access to the measured data from a remote office using RS-422/485 and LAN.
PD-MIMS also provides software which is designed to analyze, manage and interpret measured data and can be set to report daily, weekly or monthly.
- PD-MIMS continually monitors and stores test results.
- Detects abnormal conditions in motors and generators giving early warning when action is needed to prevent failure.
- Reduces maintenance costs and operational expenses.
- This test device continuously scans between 200kHZ – 300MHz.
Figure 1 The motor and generator
Figure 2 EMCs sensor on generator
Figure 3 Display of Partial Discharge Measured Data
System Configuration
Detailed specification
| System type | : PD-MIMS_SCM-01 |
| : Mounted type | |
| Number of channel | : 3 |
| Input impedance | : 50 Ω |
| Sensor | : Epoxy Mica Coupler (80 pF/6.6 kV) |
| Noise rejection | : BPF (Band pass filter), PD shape recognition (Pattern recognition), PD counts in burst are captured (Envelop) |
| Frequency bandwidth | : 200 kHz – 300 MHz, ±3dB Max |
| System configuration | : Programmable parameters option allows the user to set each phase of generator and motor |
| : Provides early warning signal for potential failures | |
| : Auto mode operation | |
| System operation | : Win 98/NT/2000/XP Environment |
| Display unit | : Operation status |
| : Alarm | |
| Data management | : Partial Discharge counts in bursts are captured |
| : Analysis of pulse count distribution per phase | |
| : 2D, 3D and QM&NQN graphic display for ease of diagnosis | |
| Data analysis | : Ability to trend and forecast a known fault |
| : User setting are possible for data collection | |
| Communication | : RS-232, 15m (19200 bps) |
| : RS-422, 500m (19200 bps) | |
| : LAN (TCP/IP) | |
| Power requirement | : 110/240VAC, 50/60HZ, 1A/0.5A |
| Size | : 13”(W) x 13”(H) x 6”(D), 12 lbs |
| Application targets | : Motor and Generator |