Split Core Current Transformers–LMZK4-10


10kV Split Core Current Transformers–LMZK4-10

for measurement or protection

Key Specifications/Special Features:

LMZK series split core current transformer is suitable for measurement of primary current, or for protection of electrical equipments such as microcomputer in 10KV and 35KV AC power distribution networks. It is widely used in fully insulated ring network switchgears such as ABB-Safe Ring/Safe Plus…and cable distribution boxes. The transformer can be directly installed at the inlet and outlet of the GIS or AIS cables. The semicircular ring core and secondary windings are vacuum poured by insulated resin. This CT is also used for signal acquisition for RTU or FTU.
The split core (easy to open-close type) is convenient for installation (no need to reconstruct the substation power cable networks).

Single windings with the function of measurement and protection (optional)

The built-in open circuit protector can be added to ensure the safety of operators at the secondary current side.
P1, P2 are primary polarity terminals. S1, S2 are secondary polarity terminals.
P2, S2 are homonymous (minus polarity).

Application example


Model LMZK4-10
Voltage level 10kV
Rated primary current 50-600A
Rated burden ≤5VA
Rated frequency 50Hz or 60Hz
Rated secondary current 5A or 1A
Rated continuous over-current 120%I1
Insulation strength AC 3kV, 1min
Applicable primary cable diameter Φ20mm to φ40mm
Dimensions (d×D×H) (mm) Φ40xφ110×55
Operating temperature -25°C to +40°C




Model LMZK4-10
Voltage level 10kV
Type Current transformer for measurement Current transformer for protection
Accuracy class 0.5 1 3 10P10 10P5
Current rating
Rated burden (VA) Rated burden (VA)
50:1 2.5
75:1 2.5
100:1 2.5
150:1 2.5
200:1 2.5 3.75 1.5 2.5
300:1 3.75 5 3.75 5
400:1 5 5
500:1 5 5
600:1 5 5
50:5 2.5
75:5 2.5
100:5 2.5
150:5 2.5
200:5 1.5 2.5 1.5 2.5
300:5 3.75 5 3.75 5
400:5 5 5
500:5 5 5
600:5 5 5




There are no reviews yet.

Be the first to review “Split Core Current Transformers–LMZK4-10”