We at Coral coil manufacture our entire range of diamond coils in automatic / semi-automatic machines to ensure best delivery time and unmatched quality at an affordable cost.
COIL TYPES:
- Diamond coils
- Turn to turn overhang transposed diamond coils
MAIN WALL INSULATION SYSTEM:
- Thermo reactive system / resin rich system (B-Stage)
- Micalastic system or single coil VPI – A resin poor system in which the insulated bars are heated under vacuum and impregnated in heated resin. The dipped bars are then packed in hydraulic pressed curing chamber
- Uncured micalastic system or green coils for VPI
- Special insulation system – Other than the above specified systems, We offer solutions for customer specific insulation systems.
CONDUCTOR INSULATION:
- Enamel with double/single Dacron
- Enamel with double/single glass
- Enamel with single Dacron + single glass
- Enamel with mica
- Enamel with mica + film
- Nomax
COPPER GRADE:
Grades:
G1, G2, G3
MAIN WALL INSULATION MATERIAL:
- VPI
- Mica/glass
- Mica/film
- Mica/glass + film
CORONA DISCHARGE PROTECTION:
- Corona shield tape / conductive tape
- Stress grading tape / semi conducting tape
VOLTAGE RANGE:
- 400 V to 16 KV
TESTING AND INSPECTION:
In process inspection:
- HV/HF inter element test
- Surge test – among many other tests performed while processing
FINAL TESTING:
- Tan delta
- High voltage
- HV/HF test
- DCR
