EH-d31-2600/6,0/3,3/2/01 EH-d31-2600/6,0/3,3/2/02 FLAME ...

EH-d31-2600/6,0/3,3/2/01
EH-d31-2600/6,0/3,3/2/02
FLAME-PROOF
TRANSFORMER STATION
6000/3300V, 50Hz
Kopex Electric Systems S.A.
ul. Biskupa Burschego 3, 43 - 100 Tychy
tel.: 00 48 32 249 94 80
fax: 00 48 32 241 34 57
serwis: 00 48 601 462 818
e-mail: poczta@kessa.com.pl
www.kessa.com.pl

STRUCTURE
CHARACTERISTIC
FEATURES
The EH-d31-2600/6,0/3,3/2/01 (d31-2600/6,0/3,3/2/02)
type transformer station is the anti-explosion version of
the electric supply device which, according to Polish execution
rules of the Geological & Mining Law, may be installed
inside underground excavations of the non-methane
or methane mines with the „a”, „b” or „c” methane
hazard grades or with the „A” or „B” coal-dust explosion
hazard classes. This construction was developed according
to the 94/9/WE (ATEX) directive requirements.
The Conformity Certificate predestinates application of
the station inside the rooms with the Group I, M2 category
explosive atmosphere. The applied electric power
protections and the assumed control system and co-operation,
with the technological blocks using the intrinsically
safe circuits, allow safe cooperation with the devices
supplying mining machines. The transformer station is
suitable for connecting of the optional data transmission
system enabling reading of technical information and its
transfer to the mine-head (e.g. to dispatcher). The data
transmission system enables a/o transfer of information
about current & voltage values or interrupting conditions.
The flame-proof transformer station is equipped also
with the internal data transmission system by which information
about the transformer station sub-assemblies
current working status is sent by the digital bus-bar and
visualized on the display. The display may show the
transformer station working parameters, protections or
relay status and the measured electric values.
The transformer station consists of three basic chambers:
upper voltage chamber equipped with the isolation
switch, over-current protection and connector switching
the main transformer,
transformer chamber inside which the dry transformer
is located,
lower voltage chamber, equipped with the quick earth
switch, control & steering systems, leakage & overcurrent
protections.
The chambers are directly connected one to each other
using the flame-proof flange ports, and their cooperation
ensures proper operation in the transformer station system.
The segmental station structure with division to chambers
and flame-proof compartments, connected one to
each other, ensures:
separation of the whole-mine distribution network
with department’s installations,
supply of receivers inside the mine department’s installations,
protection against short-circuits or over-loads on the
upper and lower voltage sides,
protection against working at the decreased insulation
status on the lower voltage side.
The transformer station may be installed inside rooms
ventilated with the air stream flowing to the exhaust shaft
or inside rooms with a separate ventilation.
The station is suitable for transport using wheels (rails)
or under-slung railway. Loads may be hanged up the railway
using the station’s transport clamps marked in red
color and special shackles which aren’t the standard station
equipment.
TECHNICAL DATA
Rated power
2600 kVA
primary
6000 V
secondary
3300 V
Transformer ratio adjustment range ± 5%
Vector group
Dyn5 (Yyn0)
www.kessa.com.pl
e-mail: poczta@kessa.com.pl
Kopex Electric Systems S.A.
ul. Biskupa Burschego 3, 43 -100 Tychy
tel.: 00 48 32 249 94 80
fax: 00 48 32 241 34 57
serwis: 00 48 601 462 818