Gemini

Gemini CT,PT

Gemini's OIP Insulated Instrument Transformers, designed for outdoor use, offer total reliability. Our range includes OIP Current Transformers (12 kV to 145 kV) meeting IEC standards.

Used in
GenerationSubstation

No payment needed. We'll send pricing, availability and lead time.

Download datasheet (PDF, 1.5 MB)

Key specifications

TypeOutdoor OIP-insulated CT & VT, oil-filled, hermetically sealed
Voltage classes12 / 36 / 52 / 72.5 / 145 kV (GCT / GVT series)
Power-frequency withstand (primary, dry/wet)28/38, 70/80, 95, 140/160, 275 kV
Lightning impulse95 / 170 / 250 / 325 / 650 kVp
CT primary currentup to 1600 A (145 kV: up to 2000 A)
CT secondary current1 or 5 A
CT short-time40 kA / 1 s thermal, 100 kAp dynamic
VT secondary110/√3, 110/3 or 110 V
VT voltage factor1.2 cont. / 1.9 for 8 h
Creepage distance (min.)400–3625 mm
StandardsIEC 60044-1, IEC 60044-2
Also offeredcyclo-aliphatic resin cast outdoor CT/VT up to 36 kV

From the manufacturer's datasheet. Ratings vary by model, so our engineers confirm the exact specification with your quotation.