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On-load tap-changer OILTAP® MSE
Operating Instructions BA 300/02
NOTE!
The product may have been modified after this document went to press.
We expressly reserve the right to make changes to the technical data, the design or the scope of
delivery.
In general, the information provided and the arrangements agreed to during processing of the
relevant offers and orders are binding.
Table of Contents
Table of Contents
1
Safety ............................................................................................................................................................
5
1.1
1.2
1.3
Safety notices ...............................................................................................................................................
Safety regulations ........................................................................................................................................
Scope of these operating instructions.......................................................................................................
5
5
5
2
Design and versions .....................................................................................................................................
6
3
Installation of the on-load tap-changer for cover mounting...............................................................
7
3.1
3.2
Mounting flange...........................................................................................................................................
Attaching the on-load tap-changer head to the transformer cover....................................................
7
7
Installation of the on-load tap-changer into the bell-type tank ........................................................
8
4
4.1
4.2
5
6
7
Installation of the on-load tap-changer into a bell-type tank with support cylinder
(without support fork).................................................................................................................................
4.1.1
Installation of the on-load tap-changer in a bell-type tank as a retrofit solution
(access via manhole)..............................................................................................................................................
4.1.2
Installation of the on-load tap-changer in a bell-type tank as a retrofit solution
(with the bell-type tank open)...........................................................................................................................
Installation of the on-load tap-changer into a bell-type tank with support fork
(without support cylinder) ..........................................................................................................................
8
8
8
9
Maintenance.................................................................................................................................................
10
Technical data ..............................................................................................................................................
12
6.1
6.2
Technical data...............................................................................................................................................
Step capacity diagram .................................................................................................................................
12
12
Annex.............................................................................................................................................................
13
7.1
7.2
7.3
7.4
7.5
7.6
7.7
13
14
15
16
17
18
19
Fitting support cylinder, dimensional drawing (7343770D) ..................................................................
On-load tap-changer OILTAP® MSE, installation drawing, central drive (7319050D)......................
On-load tap-changer OILTAP® MSE III Y - W/G, dimensional drawing (7316560D).........................
On-load tap-changer OILTAP® MSE, special design for bell-type tank installation (7318310D) ..
On-load tap-changer OILTAP® MSE, on-load tap-changer head, central drive (7317560D) ..........
On-load tap-changer OILTAP® MSE, horizontal drive shaft, central drive (7351330D) ...................
On-load tap-changer OILTAP® MSE, tap selector cross-sections (7349460D)...................................
Betriebsanleitung BA 300/02 OILTAP® MSE
The copying, distribution and utilization of this document as well as the communication of its contents to others without expressed authorization is prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
3
300/02 EN
©Maschinenfabrik Reinhausen GmbH 20011
1
Safety
1
Safety
1.1
Safety notices
The following safety instructions relating to the operation of
the OILTAP® MS are used in these operating instructions.
These instructions must always be followed !
DANGER!
Refers to an imminent danger that
will result in death or severe injury if
not avoided.
WARNING!
1.2
Safety regulations
• Always observe all warning and hazard notices.
Failure to follow the safety instructions may lead to accidents and severe injury to you or your colleagues.
• Please read these operating instructions before commissioning the equipment!
Read the operating instructions before switching on the
OILTAP® MSE. As the operator, you are responsible for
ensuring that personnel have fully understood operation
and safety regulations.
• Train your staff!
Before asking staff to work with the OILTAP® MSE, provide
training regarding general and special safety instructions
and accident prevention regulations.
• Only allow suitably qualified personnel to work with the
OILTAP® MSE!
Refers to a potentially dangerous situation that may result in death or
severe injury if not avoided.
CAUTION!
Refers to a potentially dangerous situation that may result in minor injury
and property damage if not avoided.
The OILTAP® MSE is designed solely for use in electrical
power systems and plants operated by appropriately
trained staff. Trained staff are people who are familiar
with the installation, assembly, commissioning and operation of such products.
1.3
Scope of these operating instructions
These operating instructions apply in conjunction with the operating instructions for the OILTAP® MS standard version, BA
065. This document describes the differences compared with
the standard version.
ATTENTION!
ATTENTION!
Refers to a potentially harmful situation. If this situation is not prevented,
the product or objects in its vicinity
may be damaged.
Before putting the OILTAP® MSE onload tap-changer into service, please
read the operating instructions for
the standard version of the OILTAP®
MS on-load tap-changer, BA 065.
NOTE!
Contains important information and
special notes.
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
5
2
2
Design and versions
Design and versions
The on-load tap-changer consists of the diverter switch with
the tap selector attached underneath (see Figure 1).
The diverter switch is installed in its own oil compartment.
The on-load tap-changer is secured to the transformer cover
by the on-load tap-changer head.
On-load tap-changer models with change-over selector are
available with up to a maximum of 27 operating positions.
The design of the on-load tap-changer and the designation of
its main parts are shown in the drawing 7319050D in the Annex.
These operating instructions apply to all standard models of
the on-load tap-changer variants specified below, which are
available with change-over selector.
To replace a Bulgarian on-load tap-changer of type RS 3, RS 4
or RS 9 with an on-load tap-changer of type OILTAP® MSE, the
standard version of the OILTAP® MS on-load tap-changer is
equipped with a special adapter head.
Oil compartment with diverter switch
insert
Change-over selector
Fine tap selector
Figure 1
On-load tap-changer OILTAP® MSE with
head
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
6
3
Installation of the on-load tap-changer for cover mounting
3
Installation of the on-load tap-changer for cover mounting
3.1
Mounting flange
To attach the on-load tap-changer to the transformer cover,
use the existing mounting flange of the on-load tap-changer
of type RS 3, RS 4 or RS 9.
3.2
Attaching the on-load tap-changer head to the
transformer cover
The on-load tap-changer is lowered through the cover aperture (=mounting flange) of the transformer and bolted by the
on-load tap-changer head to the mounting flange.
Proceed as follows:
1) Unpack the on-load tap-changer and set it down.
2) Clean the sealing surfaces of the mounting flange and onload tap-changer head.
3) Place an oil-resistant gasket (see Figure 2) on the mounting flange.
4) Lift the on-load tap-changer by hooking up the on-load
tap-changer head and carefully lower it into the opening
of the mounting flange.
5) Check the mounting position of the on-load tap-changer
head.
6) Screw the on-load tap-changer head to the mounting
flange.
Figure 2
Gasket 729556 between mounting flange
and on-load tap-changer head
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
7
4
Installation of the on-load tap-changer into the bell-type tank
4
Installation of the on-load tap-changer into the bell-type tank
4.1
Installation of the on-load tap-changer into a
bell-type tank with support cylinder (without
support fork)
For operation of the on-load tap-changer mounted at the
transformer cover, no additional attachment at the base of the
on-load tap-changer is required.
4.1.1
Installation of the on-load tap-changer in a belltype tank as a retrofit solution (access via manhole)
1) The transformer is accessed via a manhole. The bell-type
tank is not opened.
WARNING!
Proceed as follows to support the on-load tap-changer at the
base, for example in order to lift the bell-type tank (see Annex,
installation drawing 734077D):
Risk of injury or death!
Ensure that the transformer tank is
vented adequately to allow the operator to breath properly.
Follow the local statutory regulations
for accessing the transformer tank.
1) Use the 4 holes in the tap selector base to attach the support cylinder.
2) Four clamping pieces with M8 screw connections as shown
in Section BB can be used for attachment at the tap selector base.
WARNING!
Risk of personal injuries or damage
to equipment!
The support cylinder must be suitable
for carrying the weight of the onload tap-changer (approx. 230 kg)
during the installation phase.
In the example shown in the Annex, drawing 7343770D, a GRP
cylinder with a wall thickness of 10.5 mm (inside diameter 398
mm, outside diameter 419 mm) is used. The length of the support cylinder must be adapted to the height of the transformer
tank.
NOTE!
The support cylinder must be dimensioned such that the on-load tapchanger only has to be raised by 5...20
mm for final attachment.
2) Identify the tap selector take-off leads of the old on-load
tap-changer.
3) Disconnect the tap selector take-off leads of the old onload tap-changer.
4) Release the fasteners of the old on-load tap-changer.
5) Lift the old on-load tap-changer through the opening in
the cover of the transformer tank.
6) Insert the new on-load tap-changer through the opening
in the cover of the transformer tank. A support cylinder can
be mounted below the on-load tap-changer to provide
support if the transformer tank has to be opened.
7) Connect the tap selector take-off leads (see BA 065, section
6.1).
8) Connect the on-load tap-changer take-off lead (see BA
065, section 6.2).
9) Carry out the transformer ratio test (see BA 065, section 7).
10) Proceed according to BA 065, sections 8 to 15.
4.1.2
1)
2)
3)
4)
5)
Installation of the on-load tap-changer in a belltype tank as a retrofit solution (with the belltype tank open)
Remove the bell-type tank. Removal of the old on-load
tap-changer and installation of the new one is carried out
in the active part.
Identify the tap selector take-off leads of the old on-load
tap-changer.
Disconnect the tap selector take-off leads of the old onload tap-changer.
Mount the on-load tap-changer on a supporting device in
order to install the on-load tap-changer in the transformer. A support fork or a support cylinder may be used for this
purpose (installation with support fork, see section 5 in BA
065).
If a support cylinder is used, measure the height of the upper edge of the bell-type tank flange of the old on-load
tap-changer including the height of the support cylinder.
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
8
4
Installation of the on-load tap-changer into the bell-type tank
From this dimension subtract h - 100 mm - thickness of the
transformer cover (Figure 3). The result is the required
support cylinder length. Dimensions h are shown on page 8.
WARNING!
4.2
Installation of the on-load tap-changer into a
bell-type tank with support fork (without support
cylinder)
For installation of the on-load tap-changer with support fork,
proceed according to BA 065, section 5.
NOTE!
Risk of personal injuries or damage
to equipment!
When placed on the support cylinder,
the on-load tap-changer must be
secured against falling.
Please note that the dimensions of
the OILTAP® MSE head differ from the
dimensions of the OILTAP® MS head
described in BA 065, section 5 (see
Annex, drawing 7318310D)
6) Connect the tap selector take-off leads (see BA 065, section
6.1).
7) Connect the on-load tap-changer take-off lead (see BA
065, section 6.2).
8) Carry out the transformer ratio test (see BA 065, section 7).
9) Proceed according to BA 065, sections 8 to 15.
Figure 3
OILTAP® MSE, dimensional drawing
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
9
5
5
Maintenance
Maintenance
On-load tap-changer
Rated transformer current
MSE III 340 Y
up to 340 A
Number of tap-change operations
without MR oil filter unit
with MR oil filter unit
100,000
150,000
Table I: Maintenance intervals
If the number of tap-change operations according to Table I has not been reached, maintenance has to be carried out every 7
years.
The scope and type of maintenance are specified in the corresponding maintenance instructions from MR.
If the appropriate preparations are made, proper maintenance
can generally be carried out within a day.
WARNING!
Damage to property!
Disregarding the maintenance intervals or incomplete/incorrect maintenance can lead to severe damage to
the on-load tap-changer and the
transformer.
We generally recommend having maintenance carried out by
our Technical Service department.
That way, you can be sure that in addition to having all work
undertaken in a professional manner, our Technical Service will
also retrofit specific components in accordance with state-ofthe-art manufacturing conditions.
If maintenance is not carried out by our Technical Service department, please ensure that the personnel who carry out the
maintenance are trained by MR or are otherwise suitably qualified to carry out the work. In such a case, we would ask you to
forward us a report on the maintenance performed, to complete our maintenance files. For inquires about spare parts, we
ask you to state the serial number (see the name plate on the
motor-drive unit) and the number of tap-change operations.
In addition to the maintenance intervals mentioned above,
the diverter switch insert must be replaced after 800,000
tap-change operations.
The tap selector of the on-load tap-changer is generally maintenance-free. In special cases, however, for example in industrial transformers where high numbers of tap-change
operations are to be expected, our Technical Service department must be contacted after about 1,000,000 tap-change
operations.
If the number of tap-change operations per year is 15,000 or
higher, we recommend the use of our stationary oil filter unit
type OF 100 with a paper filter insert (see Operating Instructions no. 18).
Filtering of the switching oil allows the maintenance intervals
to be extended (see Table I).
In addition, the limit values for changing or treating the diverter switch oil specified in Table II below must be complied
with.
ATTENTION!
The oil compartment and its associated oil conservator must only be
filled with new insulating oil for
transformers according to IEC 60296
(Specification for unused mineral
insulating oils for transformers and
switchgear) and IEC 60 422 (Supervision and maintenance guide for mineral insulating oils in electrical
equipment). For dielectric strength
limit values, see section 16, Table II.
The use of other oil puts at risk the
trouble-free operation of on-load
tap-changer and transformer.
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
10
5
Maintenance
Limit values for replacing or treating the on-load tap-changer oil:
On-load tap-changer
Dielectric strength*)
MSE III 340 Y
30 kV/2.5 mm (minimum)
Table II
*) measured according to IEC 60 156
The temperature of the oil sample at the time of measuring the dielectric strength should be noted.
The specified dielectric strength values are valid for oil temperatures of 20 ± 5 °C.
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
11
6
Technical data
6
Technical data
6.1
Technical data
Max. rated through current Ium:
340 A (three-phase)
Max. rated step voltage Ui:
3300 V
Max. rated contact rating:
1000 kVA (three-phase)
Voltage for equipment Um:
72.5  123 kV
Application:
Neutral point (three-phase)
Operating positions without change-over
selector
Maximum 14
Operating positions with change-over
selector
Maximum 27
Tap selector size B
With coarse change-over selector or reversing change-over selector
Table 1:
6.2
Step capacity diagram
Stufenleistungsdiagramm VM Netzbetrieb
3500
1000 kVA
3000
Rated step voltage Ui (V)
2500
2000
1500
1000
500
0
0
50
100
150
200
250
300
350
400
Rated through current Iu (A)
Figure 4
Step capacities (rated step voltage Ui, rated through current Iu)
Operating Instructions BA 300/02 OILTAP® MSE
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Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
12
7
Annex
7
Annex
7.1
Fitting support cylinder, dimensional drawing (7343770D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
13
7
7.2
Annex
On-load tap-changer OILTAP® MSE, installation drawing, central drive (7319050D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
14
7
7.3
Annex
On-load tap-changer OILTAP® MSE III Y - W/G, dimensional drawing (7316560D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
15
7
7.4
Annex
On-load tap-changer OILTAP® MSE, special design for bell-type tank installation (7318310D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
16
7
7.5
Annex
On-load tap-changer OILTAP® MSE, on-load tap-changer head, central drive (7317560D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
17
7
7.6
Annex
On-load tap-changer OILTAP® MSE, horizontal drive shaft, central drive (7351330D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
18
7
7.7
Annex
On-load tap-changer OILTAP® MSE, tap selector cross-sections (7349460D)
Operating Instructions BA 300/02 OILTAP® MSE
Copying and distribution of this document and the utilization and communication of its contents are strictly prohibited unless expressly authorized.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration.
©Maschinenfabrik Reinhausen GmbH 2011
300/02 EN
19
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Falkensteinstrasse 8
D - 93059 Regensburg
Tel.:
Fax:
E-mail:
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BA 300/02 EN • 05/11 • F0182301 • Printed in Germany