LZZBJ9-36
LZZBJ9-36 Medium Voltage Current Transformer
Type designation LZZBJ9-36/250(II)
Rated voltage 36 kV (12 kV and 24 kV frames also available)
- Home
- Industries
- MV Distribution
Industry Pain Points
- Retrofitting a CT into a sealed ring main unit normally means replacing the unit
- Polluted and humid substations attack insulation long before they attack the core
- Specifications quote IEC 61869 and ANSI/IEEE C57.13 and the datasheet has to match
- Fault levels climb as the network grows
What Customers Need
- Split cast resin bodies that close around an existing inlet or outlet cable
- Large surface creepage distance for anti pollution and humidity protection
- 12 kV, 24 kV and 36 kV frames from one supplier
- Zero sequence cores with a 40 kA one second thermal rating
Typical Scenarios
How The Range Is Used
Ring main unit retrofit
LZCK split core resin transformers installed directly on the inlet and outlet cables of compact fully insulated switchgear, without the cable being disturbed.
New 36 kV indoor switchgear
LZZBJ9-36 post type cast resin transformers, with 12 kV and 24 kV frames for the rest of the substation.
Earth fault protection on existing feeders
LXZK zero sequence split cores with 12/42/75 kV insulation level and 40 kA for one second.
Recommended Products
Frames For This Industry
LZCK / LMZK
LMZK Epoxy Resin Split Current Transformer
System voltage 10 kV and 35 kV AC
Duty Current measurement and microcomputer protection
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
LMZJ1-0.5
LMZJ1 Epoxy Resin Current Transformer
Rated voltage 0.5 / 0.66 kV
Type Indoor ring type, single phase
CLR
Current Limiting Reactor
Type Series current limiting reactor
Function Reduce prospective short circuit current
FAQ
Questions Buyers Ask
Can a cast resin CT be retrofitted?
Yes, using the LZCK/LMZK split core resin range, whose semicircular halves are vacuum poured and close around a cable already in service.
Which standards are quoted?
IEC 60044, IEC 61869 and ANSI/IEEE C57.13 for the medium voltage and zero sequence bodies.
Do you supply matching voltage transformers?
The LZZBJ9 family is published as a medium voltage CT and VT category. Ask an engineer for the VT that pairs with your CT.
Send Your Specification
Tell us the application and the ratings. An engineer replies with the frame, the class and the price.