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¡¡¡¡ ZHEJIANG YINGMEI POWER CO.,LTD specializes in reasearching,
developing and producing DC power supply for high frequency
switch. Depending on exploratory team with high diathesis
and rich spot experience, we have developed all kinds
of high frequency switch DC system and matched equipment
for transformer substation which are widely used to transformer
substation, electric factory, open & close station
with different voltage grade from 550KV to 35KV.
¡¡¡¡The module technology adopt the most advanced fringe
syntony soft switch technology which could bring electric
insert and pull out. Between the module, it adopt isolated
design in order to prevent the module affects mutually.
With CPU in the module all of the bechmark adust and control
adopt 12 bit D/A to instead of total electrograph which
avoid the parameter excursion and improve the control
precision. In addition, the module set E2ROM inside to
ensure the run parameter can't lost forever, namely parameter
won't have any change even if break away the main monitoring
working.
¡¡¡¡The monitoring system adopt toy bricks structural design
which including center main monitoring, AC monitoring
unit, DC monitoring unit & on-off monitoring unit
and we also match the batteries testing unit and insulating
spur track testing unit according to client's demand.
Each unit is joined with center main monitoring by RS485
interface which lead the maintenance of all kinds of blocking
design become to simple and shortcut. Monitoring system
with intelligentized "four distant" interface
match for multi-automatic equipment. The communications
agreement could amend according to client's demand at
any moment.
¡¡¡¡The JY insulating monitoring unit developed by our company
adopts non-touch DC electric sensor which utilize leaking
electric current broght by earthing resistance to measure
the generatrix's earthing resistance and differentiate
generatrix's earthing trouble. This technology needn't
adding any signal on generatrix which can't bring any
blight for power supply of DC generatrix. Our company
will pay attention to parts of an apparatus to and the
key parts adopt imported famous parts in order to ensure
the products' reliability.
For instance:
¡öHigh frequency transformer and inductance adopt magnetic
core & framework produced by ¡öGermany Siemens Company
and copper strap made in England.
¡öMOSFEET high frequency switch pipe and resumptive pipe
adopt Germany IXYS company's products.
¡öHigh frequency on-off control CMOS chip adopt American
UNITRODE company's products.
¡öCPU adopt American INTEL80C32, ATMEL89C52.
¡öHui Pu company's HCNR200 linearity light coupling
¡öExact resistance adopt Japan Meike company's resistance
whose precision is up to millesimal.
¡ö12 bit D/A and 12 bit A/D prodcued by American Dezhou
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