www.reinhausen.com
OILTAP® M
On-Load Tap-Changer
for Regulating Transformers
On-Load Tap-Changer
OILTAP® M
model M III 500 Y,
Um = 123 kV, 500 A, ±9 steps
The OILTAP® M on-load tap-changer is used to vary the ratio of oil-immersed transformers under load. In general it is designed for network
transformer as well as industrial transformer applications. The tap-changers comprise a diverter switch and a tap selector in a single column
design and represent the most recent state of technology. The tap-changers offer both transformer manufacturer and user a great number of
essential advantages.
Versatility
– three-pole design for neutral application at 350 A, 500 A and 600 A ratings for three-phase wye-connected windings
– single-pole designs at 350 A, 500 A, 600 A, 800 A, 1200 A and 1500 A ratings for auto connected windings or single-phase transformers
– available with ±9, ±11, ±13, ±15, ±17 steps
– insulation to ground and tap selector size can be selected independently of one another
– convenient for bell-type tank installation
– additional devices for potential tie-in of tap winding during change-over operation of the change-over selector
(tie-in resistors, potential contact)
Compactness
– high speed transition resistor type diverter switch with arc extinction at the first current zero
– diverter switch uses snap-action mechanics by energy accumulator mounted directly on the diverter switch
– minimum possible tap selector dimensions because four available sizes ensure matched impulse voltage withstandability
– radial dimensions of the tap selector are reduced by special shaping of all parts on high potential, distances between tap selector bars
determined by actual voltage stress
– optimised integration of the change-over selector into the fine selector contact circle
Robustness – long life
– rapid tap change operation, low thermal stress on the transition resistors
– diverter switch arcing contacts made of tungsten-copper alloy at 500 A and above
– simple tap selector design, effective contact cooling, high short-circuit withstandability
– tap selector gear with steady torque during the tap-changer operation
Easy to install – cost saving
– oil-immersed installation of the entire tap-changer in the transformer main tank
– simple to connect
– drive shaft and pipe connections easy to orientate
– straight forward coupling to motor drive unit
Reduced maintenance
– long contact life
– quick and easy to disassemble diverter switch insert
– simple to adjust and control
– oil suction pipe built-in
– diverter switch contacts easy to replace
www.reinhausen.com
© Maschinenfabrik Reinhausen GmbH
Falkensteinstrasse 8
93059 Regensburg, Germany
Phone (+49) 9 41/40 90-0
Fax
(+49) 9 41/40 90-1 11
E-mail sales@reinhausen.com
Technical data
The technical data of type M have been verified in type tests according to the IEC International Standard 60214-1.
Moreover, they meet all corresponding National Standards.
Detailed information and comprehensive data for selecting a type M for a particular application are contained in our printing matter TD 50.
On-Load tap-changer
M III 350 Y M III 500 Y M III 600 Y
M I 351
M I 501
M I 601
M I 802
M I 1203
M I 1503
Number of poles
3
3
3
1
1
1
1
1
1
and application
(neutral point) (neutral point) (neutral point)
Max. rated through-current
350
500
600
350
500
600
800
1200
1500
Ium (in A)
Rated short-time withstand
6
8
8
6
8
8
16
24
24
current (in kA)
Rated short-circuit duration
3
3
3
3
3
3
3
3
3
(in s)
Rated peak withstand
15
20
20
15
20
20
40
60
60
current (in kA)
Max. rated step voltage
3300
3300
3300
3300
3300
3300
3300
3300
3300
Uim (in V)
1000
1400
1500
1000
1400
1500
2000
3100
3500
Step capacity (PStN)
(in kVA)
Rated frequency (in Hz)
50 to 60
Operating positions
Without change-over selector: max. of 18, with change-over selector: max. of 35
Rating insulation level
Highest voltage for
72.5
123
170
245
300
equipment Um (in kV)
Highest operating voltage
55
79
145
170
245
Ub (phase-phase)
on diverter switch (in kV)
Rated lightning impulse
350
550
750
1050
1050
withstand voltage
(in kV, 1,2/50)
Rated switching impulse
850
withstand voltage (in kV)
AC withstand voltage
140
230
325
460
460
(in kV, 50 Hz, 1min.)
Tap selector
4 different tap selector sizes (B, C, D, DE) available
Oil compartment
Pressure-proof up to 0.3 bar continuous difference pressure (test pressure 0.6 bar), head and cover of the
on-load tap-changer are vacuum-proof.
Oil suction pipe
Installed as standard (for details, see BA 18)
Temperature range
The on-load tap-changer OILTAP® M can be operated in the rated load range with oil temperatures
of -25°C to +105°C.
Please note: The data in our publications may differ from the data of devices delivered.
We reserve the right to make changes without notice.
IN258/01en – 0305/1500 – 258/01/01/0 – F0132700 · dp · Printed in Germany