Beijing Power Equipment Group Special Electric Equipment
Works(SEEW) is a earliest and largest manufacturer of coupling devices
for power line carrier system in China. BPEG begin to produce coupling
filter since 1962 with more than 2000 units of annual produce capacity.
The coupling devices operate widely in China and Export to aboard.
We design, control the test equipment and process test data on computer.
Applicable Standards: GB/T 7329-1998、IEC481-74、ANSI.C93.4 or other
relevant standard on request. The products have following notable
advantages: Nice surface, Simple maintenance and Excellent climate
endurance. Some kinds of coupling devices are the nation patent
product (Patent No. 99 2 07886.5).
SEEW's coupling devices have lots of species and wide
applications, and can conform customer's special requirements. Types
of them including: Coupling Filter, Separating Filter, HF Junction
Coupling Filter and HF Junction Network.Kinds of application described
1. PHASE-TO-GROUND COUPLING FILTER: There are a lot
of series such as JLT-B2Z, JL-B5 and JL-B8Z for customer. They can
be applicable to kinds of line voltage, different line impedance
and frequency , coupling capacitor or CVT specified by customer.
2. PHASE-TO-PHASE COUPLING FILTER: Series JLX. It
can be applicable to kinds of line voltage, different line side
impedance and frequency , coupling capacitor specified by customer.
3. HF JUNCTION COUPLING FILTER: Series GCJL-B7. There
are two output terminals on the cable side. There is enough attenuation
between opposite terminals to ensure that there is no affection
between the two terminals when both power line carrier and relay
protective receiving and transmitting device installed.
4. SEPARATING FILTER: Series FL-B2 including two types:
high-pass and low-pass type, band-pass and band-stop type. There
is enough attenuation between opposite terminals. The composite
loss is very low.
5. HF JUNCTION NETWORK: Series GCW-B1. They have the
following advantages: Wide frequency band, Great power, Good impedance
matching performance, Excellent universal application. It can be
used as a HF hybrid together with two coupling filters to compose
a phase-to-phase coupling filter.
6. NEW PRODUCTS FOR 10KV POWER LINE CARRIER SYSTEM:
Series JL-B9 is used for overhead line. Series JL-B10 is used for
cable. They are both used for phase-to-ground coupling method and
transfer data in PLC system.