|
Drives (EM) are connected to 400 V or 6000
V continuous or direct current |
|
Quantity
1 to 10 kW
680 pieces
10 to 50 kW
272 pieces
50 to 100 kW
98 pieces
100 to 200 kW
36 pieces
More than 200 kW
14 pieces - 9 of them HV |
|
Installed power is 26 MW |
|
The biggest EM is drive for Recovery Boiler
Suction fan 1600 kW |
|
EM standard is IEC (mostly IP 54) |
|
Drying machine speed is controlled by
direct current drive (AEG). Mini semi generation of inverters and DC
motors (pure analog) |
|
EM were produced by AEG, ABB (Germany), RK
and Sever (Croatia) |
|
Most of EM are switched on/of in MCCs made
by AEG (totally withdraw able system), partly ABB, Siemens and IMP
(local). |
|
MCCs are connected to transformers 6000/400
V; 1600 kVA (built in year 1975/1978) |
|
Controlling is done by switches on the
control panels, partly by DCS system (Oxygen bleaching).
Limit/level/pressure/proximity switches are in the field. |
|
Installation of the motors and controls is
bone by cables NYY which are fixed on cable traces and protection pipes |
|
Transformers - Power 1600 kVA, Voltage
6/0,4 kV (y 1975 – 1978) - 7 pieces |
|
CONTROL (M&C)
General: each line has its own (independent) controlling system with
pneumatic controllers, and panels (mostly delivered by Foxboro). Oxygen
delignification is controlled by DCS Metso Damatic (year 2000). Acid waste
water treatment and Talk preparation unit is controlled by SIMATIC. |
