OC 0.66 II Type High Current Split-Core Power Transformer
High current capacity: Primary current range 100A–5000A
Standard secondary output: 1A or 5A
Wide accuracy range: Accuracy class 0.2–2.0
High-performance magnetic core: Nitrogen-protected high-temperature annealed silicon steel core
High temperature resistance: Operating temperature up to 120°C
Safe and durable housing: Halogen-free, flame-retardant PC enclosure
Easy installation: Split-core design with pressure plate fixing
RoHS 2.0 compliant, lead-free manufacturing
Product Introduction
The OC 0.66 II Type Split-Core Power Current Transformer is specially developed for high-current AC power measurement and monitoring.
Its magnetic core is made of high-permeability oriented silicon steel strip, treated with high-temperature nitrogen-protected annealing, ensuring excellent magnetic performance, accuracy stability, and low loss.
The transformer uses pure copper enameled wire windings and a halogen-free, flame-retardant PC housing with a temperature resistance up to 120°C, providing reliable operation in harsh industrial environments.
The split-core structure and pressure-plate mounting design allow fast and secure installation, making it ideal for power system upgrades and on-site retrofits.
Typical Applications
Power distribution systems
High-current AC input sampling
Electrical retrofit projects
Power monitoring and protection
Standard testing instruments
Industrial energy management systems
Electrical Specifications (Typical Models)
| Model | Primary Current | Secondary Current | Rated Voltage | Burden | Accuracy Class |
|---|---|---|---|---|---|
| OC 0.66-30×20 II | 500A | 5A | 660V | 20VA | 0.2 |
| OC 0.66-60×40 II | 1500A | 5A | 660V | 5VA | 0.5 |
| OC 0.66-125×60 II | 3000A | 5A | 660V | 15VA | 0.5 |
| OC 0.66-130×40 II | 2000A | 5A | 660V | 20VA | 0.2 |
Technical Parameters
Rated voltage: 660V
Frequency: 50 / 60Hz
Isolation withstand voltage: 3000Vac (1mA, 1min)
Insulation resistance: ≥100MΩ (500V DC)
Operating temperature: -30°C to +120°C
Operating altitude: ≤3000m
Terminal type: Copper terminals S1/S2 with transparent flip cover
Flame retardant rating: V0 or V1
Wire class: Class H (180°C)
Environmental compliance: RoHS 2.0
Installation
Base plate mounting using metal brackets and screws
Busbar mounting supported for primary conductor
Suitable for panel installation and power cabinets
Storage & Transportation
Store in original packaging
Storage temperature: 0–40°C
Relative humidity ≤75%, non-corrosive atmosphere
Stack height ≤10 cartons (≤5 layers after unpacking)
Warranty
18-month warranty from shipment date
Covers manufacturing defects under proper transportation, storage, installation, and usage conditions
