The LMK7-0.66 series is a class of indoor current transformers designed for measuring, protection, and control applications on networks up to 0.66 kV. The manual describes the device’s working principle, environmental limits, and the range of primary currents it can handle.
Technical parameters such as rated voltage, frequency, primary and secondary currents, burden VA ratings, accuracy class, and insulation level are listed, together with detailed mechanical dimensions and installation guidelines. Warranty conditions and ordering information are also included. This manual is written in Chinese.
| Rated Voltage | 0.66 kV |
|---|---|
| Rated Frequency | 50 Hz |
| Rated Primary Current | 300 A – 3000 A |
| Rated Secondary Current | 5 A |
| Rated Burden (VA) | 2.5 VA – 20 VA |
| Accuracy Class | 0.2 |
| Insulation Level | 5 MΩ |
| Maximum Withstand Voltage (Primary to Secondary) | 3 kV |
The transformer can handle primary currents from 300 A up to 3000 A.
The rated secondary current is 5 A.
It can operate between –5 °C and 40 °C.
The product is covered for 18 months from the date of manufacture, provided it is used under normal conditions.