Our zero sequence using one-piece cut after casting technology, Ensure outward appearance is fine, and high measuring accuracy.
Description
The series of zero current transformers are used indoor. They are used for over driven current protection in the electric non-useful-ground neutral system up to rated frequency 50Hz or 60Hzand rated voltage 35kV. The type of the relay fitting with the transformers is DD-11/60, DD-1/60.
Construction
The transformers using one-piece cut after casting technology. Being installed, at first, make the product dimidiation. Then make it coalition used bolt. It is quite convenience for installation. There have seven types of the transformer inside diameter, such as Φ80, Φ100, Φ120, Φ140, Φ150, Φ160 and Φ180.
Technical data
1. The secondary winding can be able to withstand the power frequency test voltage of 3kV to ground.
2. The sensitivity of the product shall meet the requirements listed in from as follow:
Type of relay | Connecting method of relay windings | Scale of relay (mA) | Primary zero sequence current(A) |
DD-11/60 | in series | 15 x1-30 x 1 | 2-5 |
in parallel | 15x2-30x2 | ||
DD-1/60 | in series | 15x1-30x1 | 3-6 |
in parallel | 15x2-30x2 |
Notes: If using computer to gather zero fault current and control and control and protection, you must designate the magnitude of current and load when ordering.
LXK Overall Dimension
Type | ΦD | d | H | h |
LXK-Φ80 | 160 | 80 | 175 | 82.5 |
LXK-Φ100 | 180 | 100 | 195 | 92.5 |
LXK-Φ120 | 200 | 120 | 215 | 102.5 |
LXK-Φ140 | 220 | 140 | 235 | 112.5 |
LXK-Φ150 | 230 | 150 | 245 | 117.5 |
LXK-Φ160 | 240 | 160 | 255 | 122.5 |
LXK-Φ180 | 260 | 180 | 275 | 132.5 |
