Inductive Voltage Transformer Type SPOF (25-38 kV)
Compact and robust
SPOF outdoor rated distribution class inductive voltage transformers are of compact single-phase designs and intended for connection between phase and ground (single bushing) or phase-to-phase (two bushing design) to provide critical voltage measurement information. Hermetic sealing of the design is accomplished using a gas cushion above the oil to prevent free-breathing outside moisture-laden air.
The extremely low core flux density enables the SPOF to withstand continuous 110 percent rated voltage continuously, and provide 190 percent for 8 hours.
The SPOF has a reputation for reliable performance in service with a low field failure rate that is lower than the industry average.
Applications
- Revenue metering
- Control
- Indication
- Relay protection
Why Hitachi Energy?
- Designed for environmentally diverse conditions - polar to desert
- Excellent application engineering support ensures optimal solutions for your project
- Low loss distributed gap core ensures the best accuracy performance with the lowest core losses for the duration of service life
- Small footprint, eco-efficient minimum-oil design
- Maximum reliability and minimal maintenance
Brief performance data
SPOF | |
---|---|
Installation | Outdoor |
Design | Inductive type |
Insulation | Oil-paper |
Highest voltage for equipment | 25 - 38 kV |
Voltage factor (Vf) | Up to 1.9 - 8hrs |
Insulators | Cycloaliphatic epoxy |
Creepage distance | ≥ 25 mm/kV (longer by request) |
Service condition | |
|
-40ºC to +40ºC (standard) |
|
Maximum 1000 m (standard) |
*Other temperatures and altitudes are possible | |
Accuracy | Meets all IEC and IEEE metering and protection classes |
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