High voltage motors end winding problems
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End windings of high voltage motors are exposed to high forces during start ups. This can cause reduced lifetime and with failure, unwanted downtime.Detecting winding head problems from standard partial discharge measurements is difficult to interprete.Only skilled engineers can identify beginning windinghead degradations from PD measurements.
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High voltage motors end winding problems
- 1. Wikkelkop VPI Vacuüm druk impregnatie Onderhoud Alternator Generator EMD Predictief Explosion proof drukvast Winding head Winding end VPI Vacuum pressure impregnation Maintenance
- 2. Periodiek Voorspellend Stator Rotor Motor Periodical Predicitve Stator Rotor Motor High Voltage motors It’s not wel known that frequent start/stop cycles can cause downtime! Situation
- 3. Isolatie Elektrische diagnose metingen EMD Rapport Hoogspanning Insulation Electrical diagnostic measurement EDM Report High voltage Reason to failure • Start/stop cycles induces: – High mechanical forces – Movements on the winding heads • Resulting in: – Reduced lifetime – Unwanted downtime Winding heads
- 4. Deelontlading Weerstand Polarisatie- index PI Verliesfactor Partial discharge Resistance Polarisation- index PI Dissipation factor • What is the current state of your high voltage motor? • Is failure near? • Is your next startup the last startup? Questions? Breakpoint
- 5. Tangens delta analyse Nazicht Betrouwbaarheid Falen Tangens delta Analysis Inspection Reliability Failure • Diagnose the current status onsite with specialist measurements Solution
- 6. Overhalen Herwikkelen Revisie Demontage Stilstand Overhaul Rewinding Revision Disassembly Downtime • Problem: – Detecting winding head problems from standard partial discharge measurements is difficult to interprete • Solution: – Only skilled engineers can identify beginning windinghead degradations with PD People’s skills
- 7. Advies Hertelling Service Advise Repair Service Onsite On site • Include specialist PD measurements in your preventive maintenance schedule and avoid unexpected downtime Added value Bob Van Loock Tel: +32 (0)3-644 19 61 Adress: Metropoolstraat 15 2960 Schoten Belgium