Metal Corrugated Oil Conservator for Transformer /Bushing
· Close to zero load shift · Excellent balance properties · Precision output voltage · Minimal thermal variance · RoHS compliant · Smaller volume, lighter weight · Perfect protection, delicate structure for convenient installing · Excellent design and industrial appearance · High accuracy satisfied diverse application · Flexible design · Versatile modular box for diverse application
- Product Introduction
Rectangular high precision residual current transformer
S/N: LO-ORCT-XX
Product overview:
The LO-ORCT-XX Rectangular Series Residual Current Transformer (RCT) is primarily used in 380V, 660V low-voltage distribution cabinets, or densely packed cabinets, to continuously detect and monitor residual currents at corresponding circuit installation nodes.
The enclosure of this series is made from environmentally friendly flame-retardant ABS engineering plastic, high-permeability nanocrystalline soft magnetic material, offering high precision, good balance performance, compact size, high insulation strength, strong impact resistance, and ease of installation. It operates reliably and stably in indoor environments.
The LO-ORCT-XX Rectangular Series includes five specifications suitable for circuits with busbar widths up to 300mm, meeting the needs of detecting residual currents in distribution circuits up to 1000A.
This series adopts an optimized magnetic circuit design, setting the coil winding process based on magnetic circuit characteristics, and combining it with a compact shielding structure. This allows the product to meet requirements for accuracy, sensitivity, and balance performance while maintaining a compact size. The product's fixing feet feature a rotary structure design, which not only minimizes costs during packaging and transportation but also provides good protection for the fixing structure.
For larger specifications of the product installed in copper bar circuits, due to the relatively heavy weight of the product, it is recommended to use a flat mounting bracket to increase the stability of the installation. To achieve better monitoring results, it is best to position the busbar in the middle of the transformer's rectangular through-hole, avoiding placing the busbar too close to the inner wall side of the product's straight edge.
The terminal positions of this series also adopt a standard rail structure design, allowing the signal processing unit's housing to be clamped on its top. This gives the product greater expansion capabilities.
Features:
- Resin casting process, excellent waterproof and moisture-proof performance
- It has strong overload capability and can be overloaded 20 times the rated current for a long time if necessary.
- Excellent balance characteristics, small size products meet the detector alarm threshold requirement of 50mA
- High precision: precision level 0.5/1.0/3, optional compact design, small size
Normal use and installation conditions:
- Installation location: indoor/outdoor. Ambient temperature -40℃ ~ +45℃
- It is recommended that the relative humidity of the environment should not be greater than 80%
- The altitude does not exceed 3000m
- Atmospheric conditions: There are no seriously polluted, corrosive and explosive media in the atmosphere
- An environment without significant frequent vibration and shock. Storage temperature ：-20℃ ~ 75℃
Balance performance:
|
P/N |
Main circuit rated operating current |
Test current |
Conductor diameter |
Conductor insulation thickness |
Unbalance current |
|
LO-ORCT-25 |
0≤In≤100A |
100A |
6mm |
0.5mm |
≤5mA@100A |
|
LO-ORCT-35 |
0≤In≤250A |
315A |
10mm |
1.5mm |
≤10mA@315A |
|
LO-ORCT-40 |
0≤In≤400A |
630A |
14mm |
2.0mm |
≤20mA@630A |
|
LO-ORCT-45 |
0≤In≤630A |
630A |
14mm |
2.0mm |
≤20mA@630A |
|
LO-ORCT-60 |
0≤In≤1000A |
1000A |
20mm |
2.0mm |
≤30mA@1000A |
Dimensions:
|
Model specifications |
Main circuit current (A) |
Overall dimensions (mm) |
Dimensions (mm) |
||||||
|
L |
W |
H |
R |
S |
D1 |
D2 |
M |
||
|
LO-ORCT-25 |
≤100A |
152 |
32 |
77 |
112 |
25 |
153.5 |
163.5 |
6 |
|
LO-ORCT-35 |
≤250A |
186 |
32 |
91 |
142 |
35 |
185 |
198.5 |
6 |
|
LO-ORCT-40 |
≤400A |
240 |
32 |
100 |
192 |
40 |
245.5 |
257 |
6 |
|
LO-ORCT-45 |
≤630A |
282 |
32 |
107 |
232 |
45 |
284.5 |
298 |
6 |
|
LO-ORCT-60 |
≤1000A |
368 |
45 |
140 |
300 |
60 |
368 |
388 |
6 |
General technical specs:
|
Technical Spec |
Electrical specs |
||||
|
Rated primary current |
1000mA |
5A |
5A |
10A |
10A |
|
Rated secondary current |
0.5mA |
2.5mA |
5mA |
5mA |
10mA |
|
Rated continuous thermal current |
2000mA |
10A |
10A |
50A |
50A |
|
Operating frequency |
50-60Hz |
||||
|
Rated Accuracy class |
Equal or above Class 0.5 |
||||
|
Operating voltage |
<=660V |
||||
|
Flame retardant class |
UL94V-0 |
||||
|
Insulation resistance |
>= 1M Ohms @500VDC |
||||
|
Dielectric strength |
AC3KV/2mA/60s/50Hz |
||||
|
Thermal Class |
Class B |
||||
When the corresponding AC current passes the residual current transformer, the output sampling voltage should meet the requirements listed in the table below
R=1000Ω C=0.022uF Current source frequency:50-60Hz, accuracy class better than 0.1%, the voltage meter accuracy class of mV testing range is better than 0.1%
|
Detection current value(mA) |
Current range (mA) |
Load resistor |
Testing terminals |
Sampling voltage range (mV) |
|
50 |
49.75-50.25 |
1000Ω/0.022uF |
S1-S2 |
24.64-25.64 |
|
200 |
199-201 |
97.18-101.14 |
||
|
500 |
498-502 |
243.01-253.01 |
||
|
800 |
796-804 |
388.7-404.7 |
||
|
1000 |
995-1005 |
486.25-506.26 |
WuXi Liou Electronics Co.,LTD
We are committed to create highly efficient, energy-saving and environmentally friendly Metal Corrugated Oil Conservator for Transformer /Bushing since we have a group of our own talents who continue to learn from new equipment and technology. We promote the company's cultural development through the self-development and achievements of all our employees on a global scale. Our products sell all over the domestic and abroad thanks for the regular and new customers support.Hot Tags: residual current transformer high current, China, manufacturers, customized, quotation, low price, made in China, Monophase Ac Precision Miniature Current Transformer, Class 0.1 Three Phase Current Transformer, Mini Split Core Current Transformer, Split Core Current Transformers, low power current transformer, Ferrite Rod Core Coil
