CLC/TS 50537-3:2010

Railway applications - Mounted parts of the traction transformer and cooling system - Part 3: Water pump for traction converters

This Technical Specification covers requirements for centrifugal and peripheral electric pumps which generate the circulation of cooling liquid in converters of rail vehicles and their associated cooling system. The pumps covered in this Technical Specification are rotodynamic pumps driven by canned motors or magnetically coupled motors. CLC/TS 50537-3 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, EN 733 and EN ISO 9906). It determines requirements and tests enabling the interchangeability especially regarding electrical, mechanical and hydraulic interfaces. Furthermore, service conditions are described.

Bahnanwendungen - Anbauteile des Haupttransformators und Kühlsystems - Teil 3: Wasserpumpe für Traktionsumrichter

Applications ferroviaires - Accessoires des transformateurs de traction et systèmes de refroidissement - Partie 3: Pompe à eau pour convertisseurs de puissance

Železniške naprave - Vgrajeni deli za transformatorje vlečnih tokokrogov in hladilni sistem - 3. del: Vodna črpalka za vlečne pretvornike (konverterje)

Ta tehnična specifikacija zajema zahteve za centrifugalne in periferne električne črpalke, ki omogočajo kroženje hladilne izolacijske tekočine v vlečnih tokokrogih voznih sredstev in povezanih hladilnih sistemih. Črpalke, ki jih zajema ta tehnična specifikacija, so rotodinamične črpalke, ki jih poganja oklopljeni ali magnetno sklopljeni motor. CLC/TS 50537-3 obravnava tehnične in normativne zahteve za železniško okolje in omejuje število različnih črpalk, ki jih omogočajo standardi v industriji (na primer EN 50216-7, EN 733 in EN ISO 9906). Določa zahteve in preskuse, ki omogočajo medsebojno zamenljivost, predvsem v zvezi z električnimi, mehanskimi in hidravličnimi vmesniki. Opisani so tudi delovni pogoji.

General Information

• Status: Published
• Publication Date: 11-Feb-2010
• ICS: 29.180 - Transformers. Reactors
• ICS: 45.060.10 - Tractive stock
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XB - Electromechanical material on board rolling stock
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 26-Sep-2017
• Completion Date: 23-Sep-2025
• Ref Project: SIST-TS CLC/TS 50537-3:2010 - Railway applications - Mounted parts of the traction transformer and cooling system - Part 3: Water pump for traction converters

Overview

CLC/TS 50537-3:2010 is a CENELEC Technical Specification for railway applications that defines requirements for water pumps used to circulate cooling liquid in traction converters on rail vehicles. It covers leakage-free rotodynamic pumps - specifically centrifugal pumps driven by canned motors and peripheral pumps driven by magnetically coupled motors - and focuses on ensuring safe, reliable operation in the railway environment and enabling interchangeability across electrical, mechanical and hydraulic interfaces.

Key Topics and Requirements

• Pump types covered: centrifugal pumps (canned-motor driven) and peripheral pumps (magnetically coupled).
• Scope of requirements: electrical, mechanical and hydraulic interfaces; service conditions; materials; noise; markings; documentation; testing and acceptance.
• Interchangeability: standardized dimensional, electrical and hydraulic interfaces to permit replacement and cross-compatibility between suppliers.
• Operating and environmental conditions: railway-specific stresses such as vibration, shock, corrosive atmospheres, dust from brakes, temperature ranges, storage/transport conditions, and immunity to temporary loss of supply.
• Electrical requirements: connection to three-phase train line, starting current and insulation class considerations for converter-fed motors.
• Mechanical requirements: preferred dimensions and mounting patterns, vibration measurement and fastening provisions.
• Hydraulic requirements: rated flow/head characteristics, hydraulic performance acceptance and interchangeability across operating ranges.
• Safety and reliability: fire protection (aligned with railway fire safety), lifetime/reliability expectations, material selection and noise limits.
• Testing: a defined test program including hydraulic performance tests (referencing EN ISO 9906), electrical, mechanical and environmental tests to validate compliance.

Applications and Who Would Use This Standard

This Technical Specification is intended for professionals involved in the design, manufacture, procurement and maintenance of rail vehicle cooling systems and traction converters:

• Rolling stock OEMs and subsystem suppliers
• Electrical and mechanical design engineers for traction equipment
• Procurement and compliance teams setting technical requirements
• Maintenance and overhaul engineers specifying replacement pumps
• Test laboratories performing acceptance and type testing

Using CLC/TS 50537-3 helps ensure compatibility, safer operation, reduced downtime and simplified spare-part logistics for onboard converter cooling systems.

Related Standards (if applicable)

Key referenced documents and related railway standards include:

• CLC/TS 50534 (generic onboard auxiliary power architectures)
• EN ISO 9906 (rotodynamic pump hydraulic tests)
• EN 50216-7 (electric pumps for transformer oil)
• EN 61373 (shock & vibration for rolling stock)
• EN 50125-1 (environmental conditions for onboard equipment)
• TS 45545 (railway fire protection)

Keywords: CLC/TS 50537-3:2010, railway water pump, traction converters, rail vehicle cooling, centrifugal pump, peripheral pump, canned motor, magnetically coupled pump, hydraulic interchangeability, EN ISO 9906.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2010
äHOH]QLãNHQDSUDYH9JUDMHQLGHOL]DWUDQVIRUPDWRUMHYOHþQLKWRNRNURJRYLQKODGLOQL
VLVWHPGHO9RGQDþUSDOND]DYOHþQHSUHWYRUQLNHNRQYHUWHUMH
Railway applications - Mounted parts of the traction transformer and cooling system -
Part 3: Water pump for traction converters
Bahnanwendungen - Anbauteile des Haupttransformators und Kühlsystems - Teil 3:
Wasserpumpe für Traktionsumrichter
Applications ferroviaires - Accessoires des transformateurs de traction et systèmes de
refroidissement - Partie 3: Pompe à eau pour convertisseurs de puissance
Ta slovenski standard je istoveten z: CLC/TS 50537-3:2010
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CLC/TS 50537-3
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 3: Water pump for traction converters

Applications ferroviaires -  Bahnanwendungen -
Accessoires des transformateurs Anbauteile des Haupttransformators
de traction et systèmes und Kühlsystems -
de refroidissement - Teil 3: Wasserpumpe
Partie 3: Pompe à eau für Traktionsumrichter
pour convertisseurs de puissance

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 50537-3:2010 E

Foreword
This Technical Specification was prepared by Working Group 25 of SC 9XB, Electromechanical
material on board 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 2010-01-22.
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 is proposed:
– 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.
- 3 - CLC/TS 50537-3:2010
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

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 . 9
4.4 Storage and transport conditions . 9
5 Electrical requirements .10
5.1 Power supply .10
5.2 Electrical connection with three-phase train line .10
5.3 Connector (electrical requirements) .12
5.4 Temporary loss of voltage supply .12
5.5 Insulation class and temperature rise .12
5.6 Starting current.13
5.7 Electrical discharge machining (EDM) .13
6 Mechanical requirements .13
6.1 General .13
6.2 Vibration measurement .13
6.3 Preferred dimensions .13
6.4 Connector (mechanical requirem ents) .17
7 Hydraulic requirements .17
7.1 Hydraulic performance .17
7.2 Hydraulic interchangeability .18
7.3 Preferred values .19
8 Fire protection .23
9 Reliability and lifetime .23
10 Material .24
11 Noise .24
12 M arkings .24
13 Documentation .25
14 Testing .25
14.1 General .25
14.2 List of tests .26
14.3 Description of tests .26
Bibliography .29

- 5 - CLC/TS 50537-3:2010
Figures
Figure 1 – Typical connection to three-phase train line . 11
Figure 2 – Connectors with contact arrangement – View onto mating side . 12
Figure 3 – Main dimensions of centrifugal water pumps . 14
Figure 4 – Main dimensions of peripheral water pumps . 16
Figure 5 – Hole pattern of the preferred connector socket . 17
Figure 6 – Hydraulic interchangeability across the allowable operating range . 18
Figure 7 – Hydraulic interchangeability across an actual flow rate . 19
Figure 8 – Pump characteristic (Q-H-diagram) at a frequency of 50 Hz . 20
Figure 9 – Pump characteristic (Q-H-diagram) at a frequency of 60 Hz . 20
Figure 10 – Pump characteristic (Q-P-diagram) at a frequency of 50 Hz . 21
Figure 11 – Pump characteristic (Q-P-diagram) at a frequency of 60 Hz . 21
Figure 12 – Pump characteristic (Q-H-diagram) at a frequency of 50 Hz and 60 Hz . 22
Figure 13 – Pump characteristic (Q-P-diagram) at a frequency of 50 Hz and 60 Hz. 23
Tables
Table 1 – Main dimensions of centrifugal water pumps – Hydraulic system and fastening . 14
Table 2 – Main dimensions of centrifugal water pumps – Motor including connector . 15
Table 3 – Main dimensions of peripheral water pumps, motor data . 16
Table 4 – Material of pump casing – Minimum temperature . 24
Table 5 – Maximum A-weighted sound power level, LWA in dB, rated load condition . 24
Table 6 – List of tests . 26

1 Scope
This Technical Specification covers requirements for centrifugal and peripheral electric pumps which
generate the circulation of cooling liquid in converters of rail vehicles and their associated cooling
system.
The pumps covered in this Technical Specification are rotodynamic pumps driven by canned motors
or magnetically coupled motors.
CLC/TS 50537-3 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, EN 733 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)
Railway applications - Fire protection on railway vehicles
TS 45545 (series):2009
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
EN 733:1995 End-suction centrifugal pumps, rating with 10 bar with bearing bracket -
Nominal duty point, main dimensions, designation system
4)
Flanges and their joints - Circular flanges for pipes, valves, fittings and
EN 1092-1:2001
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 1561:1997 Founding - Grey cast irons
EN 1563:1997 Founding - Spheroidal graphite cast irons
EN 1706:1998 Aluminium and aluminium alloys - Castings - Chemical composition
and mechanical properties
EN 10283:1998 Corrosion resistant steel castings
EN 12162 Liquid pumps - Safety requirements - Procedure for hydrostatic testing
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
———————
2)
Part 5 is of CENELEC origin – Other parts are from CEN.
3)
Under development.
4)
Superseded by EN 1092-1:2007.
- 7 - CLC/TS 50537-3:2010
EN 50347:2001 General purpose three-phase induction motors having standard
dimensions and outputs - Frame numbers 56 to 315 and flange
numbers 65 to 740
3)
EN 50533 Three-phase train line voltage characteristics
EN 60034-1:2004 Rotating electrical machines - Part 1: Rating and performance
(IEC 60034-1:2004)
EN 60034-7:1993 Rotating electrical machines - Part 7: Classification of types of
+ A1:2001 construction, mounting arrangements and terminal box position
(IM Code) (IEC 60034-7:1992 + A1:2000)
EN 60034-9:2005 Rotating electrical machines - Part 9: Noise limits
+ A1:2007 (IEC 60034-9:2003, mod. + A1:2007)
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)
EN ISO 15783 Seal-less rotodynamic pumps - Class II - Specification (ISO 15783)
ISO 281:2007 Rolling bearings - Dynamic load ratings and rating life
SAE J 518:1993 Hydraulic Flanged Tube, Pipe, and Hose Connections, Four-Bolt split
flange Type
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
centrifugal pump
pump where the axis of the impeller is the same as the rotation axis of the pump motor, typically fitted
with a radial impeller. A typical centrifugal pump is a pump with suction and discharge nozzle pointing
in perpendicular direction.
Centrifugal pumps within the scope of this Technical Specification are leakage free and driven by
canned motors
3.2
peripheral pump
pump with a peripheral impeller, typically laid out with radial symmetric impellers. The axis of the
impeller is the same as the rotation axis of the pump motor. The suction and discharge nozzle typically
point in the same direction.
Peripheral pumps within the scope of this Technical Specification are leakage free and driven by
magnetically coupled motors
———————
5)
Superseded by EN 60085:2008.
3.3
inline-pump
pump with the suction and delivery flanges lying on the same axis
3.4
canned motor
liquid-filled asynchronous squirrel-cage rotor motor with a rotor and bearings immersed and operating
in the fluid pumped by the pump. The stator winding is sealed off against the fluid in the rotor
compartment by a high-grade steel tube or can
3.5
magnetically coupled pump
pump where the motor and the impeller each have a separate shaft. The transmission of RPM / torque
is carried out with a magnetic coupling, the outer part of which rests on the motor shaft. The inner part
of the magnetic coupling rests on the same shaft as the impeller. The inner and outer part of the
magnetic coupling are separated by a separating can
4 Operating conditions
4.1 General
The water pump is used for the cooling of converters on rail vehicles. The operation of the water 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 conditions:
Temperature range:
• Environmental temperature: -25 °C . 80 °C
Other values may be agreed between customer
and supplier.
• Transport and storage:
-50 °C . 80 °C
Condensation shall be avoided. See also 4.4.
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, 5B2
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 vibration and
shock as stated in EN 61373. See also 14.3.14

- 9 - CLC/TS 50537-3:2010
4.3 Cooling liquid
The cooling liquid shall be a mixture of water (drinking water according to national regulations) and
anti-freeze. It shall be qualified for the intended use as a heat transfer medium within the temperature
range according to 4.2. Adequate corrosion protection shall also be taken into account.
The following characteristics of the anti-freeze shall be agreed between customer and manufacturer:
• type. In case of no agreement in the contract, Antifrogen N or identical shall be assumed;
mixing ratio water – anti-freeze. Unless otherwise agreed in the contract, a mixing ratio of 56:44
•
shall be assumed;
maximum size of suspended solids. Unless otherwise agreed in the contract, a size of < 100 µm
•
shall be assumed;
maximum content of solids. Unless otherwise agreed in the contract, a value of 340 mg/l shall
•
be assumed;
maximum hardness of solids. Unless otherwise agreed in the contract, a value of ≤ 4 on the
•
Mohs scale shall be assumed;
• permanent usage temperatures. Unless otherwise agreed in the contract, a temperature range
from -25 °C up to 95 °C shall be assumed.
Canned motor cooling and plain bearing lubrication shall be effected by circulation of the liquid being
pumped.
The pump manufacturer shall make sure that under these conditions malfunction of the pump will not
occur.
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 ensured that the pumps are clean and free of all foreign matter
and contamination.
Covers shall be provided and securely attached to the pump flanges during transport and/or storage
and appropriate steps taken to ensure that there is no deterioration caused by condensation. 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 orientation in which the pump shall preferably be stored.
The interior of the water pump shall be protected against corrosion by an appropriate, water
removable preservative. The preservative shall be environmentally friendly.

If oils or solvents are used, the maximum volume of the preservative shall not be more than 0,2 % of
the pump volume.
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.
Additionally, 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.
A terminal for PE shall be provided (see Figure 1).
5.2 Electrical connection with three-phase train line
Figure 4 shows how the pump is typically connected to the three-phase train line.

- 11 - CLC/TS 50537-3:2010
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

5.3 Connector (electrical requirements)
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.
Figure 2 shows the contact arrangement of the preferred connectors (see also Figure 1, X1) which are
mounted to the pump and represent its electrical interface.

a) Option 1: Smaller 5-pole connector b) Option 2: Larger 6-pole connector

Figure 2 – Connectors with contact arrangement – View onto mating side
Other connectors or 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 fulfil the relevant fire protection
standards in accordance with Clause 8.
Important mechanical requirements of the connector are described in 6.2.

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.
See also 14.3.11 and 14.
...