Product Overview
The LZZBW-10/165/2S is an outdoor epoxy cast-resin current transformer designed for medium-voltage AC systems with rated voltage up to 12kV. It is used for current measurement, metering, and relay protection. This model supports 5A or 1A secondary current and complies with IEC61869-2:2012 and GB20840.2-2014 standards.
Product Type
| Item | Specification |
|---|---|
| Product name | Outdoor Epoxy Cast-Resin Current Transformer |
| Model | LZZBW-10/165/2S |
| Insulation | Epoxy resin |
| Rated voltage | 10/11/12kV class |
| Rated insulation level | 12/42/75kV |
| Rated frequency | 50Hz |
| Rated secondary current | 5A or 1A |
| Ambient temperature | -5°C to +55°C |
Product Display
Main Applications
- Outdoor medium-voltage distribution systems
- Current measurement and energy metering circuits
- Relay protection and monitoring devices
- Switchgear and distribution cabinets installation
Key Technical Features
- Outdoor epoxy resin cast for weather and insulation stability
- Supports 5A or 1A secondary current output
- Rated insulation 12/42/75kV suitable for 10/11/12kV systems
- High short-circuit withstand with accurate metering and protection
- Complies with IEC61869-2:2012 and GB20840.2-2014
Working Principle
The transformer operates via electromagnetic induction. Primary current generates flux in the laminated core, inducing a proportional current in the secondary winding. Epoxy resin ensures insulation between primary and secondary circuits.
Rated Primary, Accuracy and Output
| Rated
Primary Current(A) |
Accuracy
Combination |
Rated
Output(VA) |
Short-Time
Thermal Current (kA/1s) |
Rated
Dynamic Current (kA) |
|---|---|---|---|---|
| 5–400 | 0.2/10P, 0.25/10P, 0.5/10P | 10 / 10 / 15 | 60 / 50 / 50 / 45 | 150 / 120 / 100 / 90 |
| 600 | 10 | 50 | 120 | |
| 800 | 15 | 50 | 100 | |
| 1000 | 15 | 45 | 90 |
Overall Dimensions
The following are reference dimensions (mm) for installation and layout planning:
FAQs
Used for outdoor medium-voltage measurement, metering, and protection.
5A or 1A secondary current.
12/42/75kV insulation for 10/11/12kV systems.
IEC61869-2:2012 and GB20840.2-2014.
Yes, it supports rated short-time thermal and dynamic currents as specified.
-5°C to +55°C ambient temperature.
Installed on mounting base as per switchgear drawing, ensuring vertical or horizontal alignment.