SIST-TS CLC/TS 50537-2:2010

SLOVENSKI STANDARD
SIST-TS CLC/TS 50537-2:2010
01-april-2010
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Railway applications - Mounted parts of the traction transformer and cooling system -
Part 2: Pump for insulating liquid for traction transformers and reactors
Bahnanwendungen - Anbauteile des Haupttransformators und Kühlsystems - Part 2:
Pumpe für Isolierflüssigkeiten für Haupttransformatoren und Drosselspulen
Applications ferroviaires - Accessoires des transformateurs de traction et systèmes de
refroidissement - Partie 2: Pompe pour liquide isolant des transformateurs principaux et
bobines d’inductance
Ta slovenski standard je istoveten z: CLC/TS 50537-2:2010
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
SIST-TS CLC/TS 50537-2:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CLC/TS 50537-2:2010

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SIST-TS CLC/TS 50537-2:2010

TECHNICAL SPECIFICATION
CLC/TS 50537-2

SPÉCIFICATION TECHNIQUE
February 2010
TECHNISCHE SPEZIFIKATION

ICS 29.180; 45.060.10


English version


Railway applications -
Mounted parts of the traction transformer and cooling system -
Part 2: Pump for insulating liquid for traction transformers and reactors



Applications ferroviaires -  Bahnanwendungen -
Accessoires des transformateurs Anbauteile des Haupttransformators
de traction et systèmes und Kühlsystems -
de refroidissement - Part 2: Pumpe für Isolierflüssigkeiten
Partie 2: Pompe pour liquide isolant für Haupttransformatoren
des transformateurs principaux und Drosselspulen
et bobines d’inductance






This Technical Specification was approved by CENELEC on 2010-01-22.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.



CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 50537-2:2010 E

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Foreword
This Technical Specification was prepared by Working Group 24 of SC 9XB, Electromechanical
material on board of rolling stock, of Technical Committee CENELEC TC 9X, Electrical and electronic
applications for railways.
It was circulated for voting in accordance with the Internal Regulations, Part 2, Subclause 11.3.3.3 and
was accepted as a CENELEC Technical Specification on 2009-12-11.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2010-07-22
The CLC/TS 50537 series “Railway applications – Mounted parts of the traction transformer and
cooling system” consists of four different parts:
• Part 1: HV bushing for traction transformers;
• Part 2: Pump for insulating liquid for traction transformers and reactors;
• Part 3: Water pump for traction converters;
• Part 4: Gas and liquid actuated (Buchholz) relay for liquid immersed transformers and reactors
with conservator for rail vehicles.
1)
The CLC/TS 50537 series shall be read in conjunction with CLC/TS 50534 “Railway applications –
Generic system architectures for onboard electric auxiliary power systems”.
This standardization project was derived from the EU-funded Research project MODTRAIN
(MODPOWER). It is part of a series of standards, referring to each other. The hierarchy of the
standards is intended to be as follows:
———————
1)
Under development.

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Overview on the technical framework
CLC/TS 50534 defines the basis for other depending standards
CLC/TS 50534
Railway applications - Generic system architectures for
onboard electric auxiliary powers systems
Level 1: Architectures
EN 50546
CLC/TS 50535 EN 50533
Shore (external) supply systems
Railway applications - Onboard Three-phase train line voltage
for rail vehicles
auxiliary power converter system characteristics
Level 2: Systems, Interfaces
CLC/TS 50537-1
EN 50547 CLC/TS 50537-2
Part 1: HV bushing for traction
Batteries for rail vehicles
Part 2: Pump for insulating liquid for
transformers
traction transformers and reactors
CLC/TS 50537-4
CLC/TS 50537-3
Part 4: Gas and liquid actuated
Part 3: Water pump for traction
(Buchholz) relay for liquid immersed
converters
transformers and reactors with
conservator for rail vehicles
Level 3: Components
Mounted parts of the traction transformer and cooling system

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Contents
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Operating conditions . 8
4.1 General . 8
4.2 Environmental conditions . 8
4.3 Cooling liquid . 8
4.4 Storage and transport conditions . 9
5 Electrical requirements . 9
5.1 Power supply . 9
5.2 Electrical connection with three-phase train line .10
5.3 Connector (electrical requirements) .11
5.4 Temporary loss of voltage supply .11
5.5 Insulation class and temperature rise .11
5.6 Starting current.11
5.7 Electrical discharge machining (EDM) .11
6 Mechanical requirements .11
6.1 General .11
6.2 Vibration measurement .12
6.3 Preferred dimensions .12
6.4 Connector (mechanical requirem ents) .15
7 Hydraulic requirements .16
7.1 Hydraulic performance .16
7.2 Hydraulic interchangeability .16
7.3 Preferred values .18
8 Fire protection .23
9 Reliability and lifetime .23
10 Material .23
11 Noise .24
12 M arkings .24
13 Documentation .24
14 Testing .25
14.1 General .25
14.2 List of tests .25
14.3 Description of tests .26
Bibliography .29

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Figures
Figure 1 – Typical connection to three-phase train line .10
Figure 2 – Main dimensions of in-line pumps (axial flow pumps).12
Figure 3 – Main dimensions of radial flow pumps (R-A.1 or R-A.2) .14
Figure 4 – Main dimensions of radial flow pumps with in-line input (R-L.2 only) .14
Figure 5 – Hole pattern of the preferred connector socket .15
Figure 6 – Hydraulic interchangeability across the allowable operating range .17
Figure 7 – Hydraulic interchangeability across an actual flow rate .17
Figure 8 – Characteristics (Q-H-diagram) for pumps I.1 and I.2 at 50 Hz .18
Figure 9 – Characteristics (Q-H-diagram) for pumps I.1 and I.2 at 60 Hz .19
Figure 10 – Characteristics (Q-P-diagram) for pumps I.1 and I.2 at 50 Hz .19
Figure 11 – Characteristics (Q-P-diagram) for pumps I.1 and I.2 at 60 Hz .20
Figure 12 – Characteristics (Q-H-diagram) for pumps R-A.x and R-L.2 at 50 Hz .21
Figure 13 – Characteristics (Q-H-diagram) for pumps R-A.x and R-L.2 at 60 Hz .21
Figure 14 – Characteristics (Q-P-diagram) for pumps R-A.x and R-L.2 at 50 Hz .22
Figure 15 – Characteristics (Q-P-diagram) for pumps R-A.x and R-L.2 at 60 Hz .22

Tables
Table 1 – Main dimensions of pump, type I.1 and I.2 .13
Table 2 – Main dimensions of pump, type R-A.1, R-A.2 and R-L.2 .15
Table 3 – Material of pump casing – Minimum environmental temperature .23
Table 4 – Maximum A-weighted sound power level, LWA in dB, rated load conditions .24
Table 5 – List of tests .26

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1 Scope
This Technical Specification covers requirements for electric pumps which generate the circulation of
insulation liquid in traction transformers and reactors of rail vehicles and their associated cooling
system.
The pumps covered by this Technical Specification are rotodynamic pumps driven by a squirrel cage
induction motor which is immersed in the insulating liquid.
CLC/TS 50537-2 gives consideration to both technical and normative requirements of the railway
environment and restricts the variety provided by industry-wide standards for pumps (for example
EN 50216-7 and EN ISO 9906). It determines requirements and tests enabling the interchangeability
especially regarding electrical, mechanical and hydraulic interfaces. Furthermore, service conditions
are described.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
2)
TS 45545 (series):2009 Railway applications – Fire protection on railway vehicles
CLC/TS 50467 Railway applications – Rolling stock – Electrical connectors,
requirements and test methods
3)
CLC/TS 50534 Railway applications – Generic system architecture for onboard electric
auxiliary power systems
4)
EN 1092-1:2001 Flanges and their joints – Circular flanges for pipes, valves, fittings and
accessories, PN designated – Part 1: Steel flanges
EN 1092-2:1997 Flanges and their joints – Circular flanges for pipes, valves, fittings and
accessories, PN designated – Part 2: Cast iron flanges
EN 1092-4:2002 Flanges and their joints – Circular flanges for pipes, valves, fittings and
accessories, PN designated – Part 4: Aluminium alloy flanges
EN 1561 Founding – Grey cast irons
EN 1563 Founding – Spheroidal graphite cast irons
EN 1706:1998 Aluminium and aluminium alloys – Castings – Chemical composition
and mechanical properties
EN 50125-1:1999 Railway applications – Environmental conditions for equipment – Part 1:
Equipment on board rolling stock
EN 50216-7:2002 Power transformer and reactor fittings – Part 7: Electric pumps for
transformer oil
3)
Three-phase train line voltage characteristics
EN 50533
———————
2)
Part 5 is of CENELEC origin – Other parts are from CEN.
3)
Under development.
4)
Superseded by EN 1092-1:2007.

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EN 60034-1:2004 Rotating electrical machines – Part 1: Rating and performance
(IEC 60034-1:2004)
EN 60034-9:2005 Rotating electrical mashines – Part 9: Noise limits
(IEC 60034-9:2003, mod.)
5)
EN 60085:2004 Electrical insulation – Thermal classification (IEC 60085:2004)
EN 60349-2:2001 Railway applications – Rotating electrical machines for rail and road
vehicles – Part 2: Electronic converter-fed alternating current motors
(IEC 60349-2:1993, mod.)
EN 60529:1991 Degrees of protection provided by enclosures (IP code)
+ A1:2000 (IEC 60529:1989 + A1:1999)
EN 60721-3-5:1997 Classification of environmental conditions – Part 3: Classification of
groups of environmental parameters and their severities – Section 5:
Ground vehicle installations (IEC 60721-3-5:1997)
EN 61373:1999 Railway applications – Rolling stock equipment – Shock and vibration
tests (IEC 61373:1999)
EN ISO 9906:1999 Rotodynamic pumps – Hydraulic performance acceptance tests –
+ corr. Dec. 2004 Grades 1 and 2 (ISO 9906:1999)
ISO 281:2007 Rolling bearings – Dynamic load ratings and rating life
ISO 4406:1999 Hydraulic fluid power – Fluids – Methods for coding level of
contamination by solid particles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
rotodynamic pump
pumps based on bladed impellors which rotate within the fluid to impart a tangential acceleration to the
fluid and a consequent increase in the energy of the fluid. The purpose of the pump is to convert this
energy into pressure energy of the fluid to be used in the associated piping system.
In-line pumps and radial pumps are rotodynamic pumps
3.2
in-line pump (axial flow pump)
pump with the suction and delivery flow being on the same axis. In the case of transformer pumps, the
axis of the flanges is usually the same as the axis of rotation of the pump rotor
3.3
radial flow pump
pump with the suction and delivery flow pointing in perpendicular direction. For transformer pumps the
axis of the delivery flange is usually perpendicular to the rotation of the motor
———————
5)
Superseded by EN 60085:2008.

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4 Operating conditions
4.1 General
The insulating liquid pump is used for the cooling of transformers on rail vehicles. The operation of the
pump may be affected by the conditions that occur under normal train service conditions, e.g.
corrosive gases, carbon dust and other matter from brake shoes and pads or vibration stress.
Among all service conditions described in this part, malfunction of the pump shall not occur.
4.2 Environmental conditions
The pump shall ensure appropriate functioning under the given environmental conditions:
Temperature range:
-25 °C . 80 °C
• Environmental temperature:
Other values may be agreed between customer
and supplier.
• Transport and storage:
-40 °C . 80 °C
Condensation shall be avoided.
Altitude: up to 1 400 m
(EN 50125-1:1999, class A1)
Humidity: 0 % . 100 %
Climate class: EN 60721-3-5:1997, 5K2
Biological classification: EN 60721-3-5:1997, 5B3
Chemical classification: EN 60721-3-5:1997, 5C3
Contamination: EN 60721-3-5:1997, 5F3
Mechanical-active matters: EN 60721-3-5:1997, 5S3
Rain: EN 60721-3-5:1997, 5K3
Solar radiation: EN 60721-3-5:1997, 5K3
Shock and vibration: The pump shall be able to withstand shock and
vibration as stated in EN 61373. See also
14.3.14.
4.3 Cooling liquid
Different liquids may be used within the transformer, which are typically used for cooling as well as
insulating.
Generally, the pump shall be able to operate with mineral oil, ester and silicone fluid (including
chemical matters). The maximum temperature of the cooling liquid is 135 °C for thermal steady state.
Other values shall be agreed between manufacturer and customer.

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Unless otherwise agreed in the contract, the oil quality is assumed to be at least according to
level 15-12 of ISO 4406.
Motor cooling and bearing lubrication shall be effected by circulation of the liquid being pumped.
4.4 Storage and transport conditions
As far as possible, the pumps shall be delivered ready to be installed.
Before storage or transport, it shall be made sure that the pumps are clean and free of all foreign
matter and contamination.
During transport and/or storage deterioration caused by condensation shall be avoided by solid covers
being shut tightly. On customer request, the pump shall be pressured with an appropriate gas.
Suitable packaging shall be chosen depending on the place and method of delivery. To prevent any
possible damage resulting from long-term storage (e.g. on bearings, sealings), the manufacturer shall
specify, the way and the orientation in which the pump shall preferably be stored.
5 Electrical requirements
5.1 Power supply
The preferred value and the characteristics of the supply voltage are defined in EN 50533. Other
values shall be agreed between manufacturer and customer.
The pumps shall be qualified for direct switch on within the defined operating range of voltage and
frequency.
In addition, the pump shall be able to start between 90 % and 110 % rated voltage within the
temperature range defined in 4.2 while using the cooling liquid given in 4.3 without excessive heating.
The manufacturer shall specify the permanent current at rated voltage which the motor is able to
withstand without being damaged (worst case in agreement with the customer).
A terminal for potential equalisation shall be provided (see Figure 1).

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5.2 Electrical connection with three-phase train line
Figure 1 shows how the pump is typically connected to the three-phase train line.

Key
A1: Safety device with e.g.
- Fuses
- Motor protecting switch
X1: Socket housing
X2: Connector
M1: Motor with socket housing
Figure 1 – Typical connection to three-phase train line

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5.3 Connector (electrical requirements)
Connectors shall comply with CLC/TS 50467.
The manufacturer shall make sure that the connector is suitable for the intended use. Especially
starting currents according to 5.6 shall not cause thermal problems.
Connectors and contact arrangements shall be agreed between manufacturer and customer.
As an alternative, designs without connectors are permitted. In this case, cables with permanent labels
shall be provided to show the connections required for correct rotation of the pump. This option shall
be agreed between manufacturer and customer. The cable used shall comply with the relevant fire
protection standards in accordance with Clause 8.
Important mechanical requirements of the connector are described in 6.4.
5.4 Temporary loss of voltage supply
Motors shall be capable of recovering normal operation in the event of a system disturbance (e.g.
passing of intersections) causing temporary loss of supply voltage for a period of up to thirty seconds
followed by a sudden restoration initially to 90 % of the rated voltage.
Temporary loss of voltage supply can also lead to short-time extreme loads acting on the bearings
because of suboptimal lubrication while continuously being exposed to shock and vibrations. Bearings
shall not be damaged in this situation.
The typical number of voltage losses within a given time shall be agreed between customer and
manufacturer.
See also 14.3.11 and 14.3.14.
5.5 Insulation class and temperature rise
The stator winding insulation shall conform at least to EN 60085 class F and shall be non-hygroscopic.
The temperature rise of motors shall not exceed the value defined by the chosen insulation class.
5.6 Starting current
The starting current at rated voltage shall not exceed seven times the rated full load current at 60 °C of
the motor subject to the tolerances given in EN 60034-1, as appropriate.
5.7 Electrical discharge machining (EDM)
In order to avoid electrical discharge machining, the manufacturer shall make sure that the bearings
are suitable for the intended use.
6 Mechanical requirements
6.1 General
The pump shall be suitable for installation with the axis of the rotating unit in either horizontal or
vertical position with the motor above or below the hydraulic section. If other positions are to be used
this shall be made known to the manufacturer.
All parts of the pump directly exposed to the cooling liquid shall be able to withstand at least the
working pressure of 3 bar. It shall be ensured that no leakage occurs.

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6.2 Vibration measurement
The motor of the pump shall be equipped with areas so that accelerometers can be attached to the
pump in order to allow operators the regular measurement of vibrations.
6.3 Preferred dimensions
This Technical Specification defines a grid of preferred dimensions for insulating liquid pumps to be
used within the railway environment. Other dimensions shall be agreed between customer and
manufacturer. Pumps with other dimensions shall comply with all other requirements of this Technical
Specification.
6.3.1 In-line pump
The dimensions and the external interface of the liquid pump shall be agreed between customer and
manufacturer.
In order to be distinguishable from other types of pumps, in-line pumps are labelled with the letter I (for
in-line) followed by a number, e.g. I.1.
An in-line pump I.x shall comply with the main dimensions given in Figure 2 and Table 1. This
requirement is fulfilled if
– the dimensions defining the external interface (especially suction and discharge nozzle) are
complied with, and
– all other dimensions are equal to or smaller than the values given in Figure 2 in conjunction with
Table 1.

Figure 2 – Main dimensions of in-line pumps (axial flow pumps)

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Table 1 – Main dimensions of pump, type I.1 and I.2
Type Dimensions
mm
DN D1 E H
I.1 65 or 80 265 350 210
I.2 80 or 100 305 480 230

The suction and discharge flanges shall be in accordance with PN 10 according to EN 1092.
The pump casing shall not be used as an anchorage point for the piping. The permissible pipeline
forces shall be provided by the manufacturer and shall not be exceeded.
The pipelines shall be anchored in close proximity to the pump and connected without transmitting any
stresses or strains. Thermal expansions of the pipelines shall be compensated by appropriate
measures so as not to impose any extra loads on the pump exceeding the permissible pipeline forces
and moments.
6.3.2 Radial flow pump
The dimensions and the external interface of the liquid pump shall be agreed between customer and
manufacturer.
In order to be distinguishable from other types of pumps, radial flow pumps are labelled with the
letter R (for radial) followed by a letter A or L (for angular or in-line) and number, e.g. R-A.1.
A radial flow pump R-A.x or R-L.x shall comply with the main dimensions given in Figures 3 and 4 and
Table 2. This requirement is fulfilled if
– the dimensions defining the external interface (especially suction and discharge nozzle) are
complied with, and
– all other dimensions are equal to or smaller than the values given in Figures 3 and 4 in
conjunction with Table 2.

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Figure 3 – Main dimensions of radial flow pumps (R-A.1 or R-A.2)

Figure 4 – Main dimensions of radial flow pumps with in-line input (R-L.2 only)

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Table 2 – Main dimensions of pump, type R-A.1, R-A.2 and R-L.2
Pump type 1 2
Flange type according to DN 65 DN 80 DN 80 or DN 100
EN 1092-2 or EN 1092-4 or 100 Axial flow pump
PN10
Dimension A & P 85 125 140
mm
B 160 220 220
E 390 425 440
F 285 370 -
M 95 160 160
N 95 165 165
O 175 175 175

The suction and discharge flanges shall be in accordance with PN 10 according to EN 1092-2 or
EN 1092-4.
The pump casing shall not be used as an anchorage point for the piping. The permissible pipeline
forces shall be provided by the manufacturer and shall not be exceeded.
The pipelines shall be anchored in close proximity to the pump and connected without transmitting any
stresses or strains. Thermal expansions of the pipelines shall be compensated by appropriate
measures so as not to impose any extra loads on the pump exceeding the permissible pipeline forces
and moments.
6.4 Connector (mechanical requirements)
Connectors shall comply with CLC/TS 50467.
For a correct selection of connector enclosure, contact insert and connector, the intended mounting
location is crucial. It shall be stated by agreement between customer and manufacturer. In order to
ensure the desired mechanical and electrical characteristics of the connector, it is recommended that
all parts be provided by the same manufacturer.
Figure 5 shows the hole patterns of the preferred connector enclosures including their dimensions.
Other connector enclosures shall be agreed between customer and manufacturer.


a) Option 1: b) Option 2: c) Optio
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