Dry-Type Transformer,Current Limiting Reactors
1.Overview
Dry-type transformers are mainly composed of high-voltage coils,
low-voltage coils, iron cores, clamps and other accessories. They
are mainly used in power systems of 35kV and below to boost and
reduce voltage.
Our dry-type transformer product series include SC(B)10, SC(B)11,
SC(B)12 and SC(B)13. This series of transformers are made of
high-quality materials, green and environmentally friendly, and are
produced using advanced production and testing equipment and strict
technology. The products are safe and reliable, have a long service
life, and have a high level of protection. Widely used in power
systems, suitable for important or special environmental places
such as high-rise buildings, commercial centers, airports, tunnels,
chemical plants, nuclear power plants, ships, etc.
2. Purpose
- The iron core is made of high-quality cold-rolled silicon steel
sheet, with a 7-level stepping structure of full oblique joints,
and the core column adopts H-grade non-weft adhesive tape or
through-core screw structure. The surface of the iron core is
sealed with insulating resin to prevent moisture and rust, and
reduce The no-load loss, no-load current and iron core noise are
calculated.
- The high-voltage winding is wound by a high-precision automatic
winding machine. When the capacity is large, there is a heat
dissipation duct. The inner and outer insulation of the winding is
filled with glass fiber grid board, which enhances the mechanical
strength of the coil.
- The low-voltage winding adopts the foil structure, which solves the
problem of the axial helix angle when using wire winding and makes
the ampere-turn more balanced.
- The coil is encapsulated with epoxy resin, which is non-flammable,
fireproof, explosion-proof, maintenance-free, pollution-free, small
in size, and can be directly installed in the load center.
- Adopt advanced electromagnetic design software and casting
technology, low partial discharge, low noise, strong mechanical
ability, strong short circuit resistance, good thermal performance,
and the capacity can be increased by 50% under forced air cooling.
- Equipped with an intelligent temperature controller, which has the
functions of fault alarm, over temperature alarm, over temperature
trip and black gate, and is connected to the computer through the
RS485 serial interface, which can centrally monitor and control the
start and stop of the fan.
3. Main features
- The controller adopts industrial-grade computer platform, dual CPU
architecture, multi-layer circuit board processing, stable and
reliable operation;
- Adopt full-color LCD and full Chinese display, parameter display,
setting and query are convenient and intuitive;
- Accurate adjustment, fast speed, and wide adjustment range, which
can be adjusted in the full range of 0-100% rated current;
- Built-in high-voltage grounding line selection module, using
residual current increment method and active power method to make
line selection fast and accurate;
- Equipped with RS232 and RS485 communication interfaces, which can
realize the communication with the host computer and achieve the
long-distance signal transmission;
- It can realize the sound and light control alarm function of
single-phase ground fault;
- Equipped with a standard parallel port printer, which can realize
data printing and grounding information printing;
- With one control and two functions, two sets of arc suppression
coils in the same system can be automatically changed according to
the operating conditions of the system.
4.Executive standard
GB 1094.1-2013 ,GB/T 10228-2015 ,IEC 60076.11-2004 ,DIN 42523-1/A1-1996
