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LJZ Zero-Sequence Casting Resin High Voltage Current Transformer
Zero sequence Transformer
The basic principle of zero-sequence current protection is based on
Kirchhoff's current law: the algebraic sum of the complex current
flowing into any node of the circuit equals zero. The vector sum of
each phase current is equal to zero under the normal condition of
circuit and electrical equipment. Therefore, the secondary winding
of zero sequence current Transformer has no signal output and the
actuator element does not move. When the ground fault occurs, the
vector sum of the phase current is not zero. The fault current
causes the magnetic flux in the ring core of the zero sequence
current Transformer. Effect: When electric shock or leakage occurs
in the circuit, protect action, cut off the power supply. Use: One
current Transformer can be installed on each of the three phase
lines, or three phase wires can be used to pass through the zero
sequence current Transformer together,A zero sequence current
Transformer can also be installed on the neutral line N to detect
the vector sum of three phases. The zero-sequence current
Transformer is sealed by ABS engineering plastic casing and whole
resin pouring, which can effectively avoid the corrosion during the
long-term use of Transformer. Good insulation, beautiful
appearance. High sensitivity, good linearity, reliable operation,
easy installation and so on. The utility model is superior to the
general zero-sequence current Transformer, and has a wide range of
applications.
Parallel | Primary Sequence Current Value |
15x2 | 1-3 |