LXZK0111-80
LXK Zero Sequence Split Core Current Transformer
Rated primary current 50 A to 600 A
Rated secondary current 5 A or 1 A
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LSY / LSF series
LSY Residual Fire Monitoring Current Transformer
Electrical fires start as leakage current long before they start as heat. A high permeability nickel or nanocrystalline core sees milliamps of residual current, which is what a fire monitoring system needs to raise an alarm early.
- TypeResidual current transformer for fire monitoring
- CoreHigh magnetic permeability nickel steel or nanocrystalline
- BodyOpen type and closed type
- SeriesLSY, LSYK, LSF, LSFK
Product Overview
Fire monitoring residual open and close type current transformer with a high magnetic permeability nickel steel or nanocrystalline core, for electrical fire monitoring systems.
Both open (K suffix) and closed bodies are published so the transformer can be added to an existing cable run or built into new switchgear.
Application Scenarios
- Electrical fire monitoring systems
- Residual current alarm and monitoring
- Building and industrial safety systems
Technical Features
- High magnetic permeability core for milliamp level residual detection
- Open type versions retrofit onto existing cables
- Closed type versions for new switchgear builds
Specification available on request.
Real Product Photography
LSY Residual Fire Monitoring Current Transformer Gallery
FAQ
Questions Buyers Ask
Why a nanocrystalline core?
Residual monitoring measures the small imbalance left when all phase and neutral currents are summed. That signal is tiny, so the core needs very high permeability and very low remanence. Nanocrystalline and high nickel alloys give both; silicon steel does not.
What is the difference between LSY and LSF?
They are two body families in the same residual monitoring range, with open type variants carrying the K suffix. Send the cable diameter and the monitoring unit you use and an engineer will confirm.
Can it be fitted to an existing installation?
Yes, using the open type (K) bodies.
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Get LSY Residual Fire Monitoring Current Transformer Quoted Today
Send the ratio, accuracy class, burden and conductor size. An engineer confirms the frame and the price.