special
electric
motors
3
Conte n t s
Introduction
4
COMBIMAC
Special electric motors
Submersible electric motors
5
Surface cooled, type 55
Forced cooled, type 99
Permanent magnet motors
6
AC permanent magnet motors
Brushless DC motors
Direct current electric motors
7
Standard range, type 77
Specials
Brake motors
8
High-speed electric motors
9
ATEX
10
Naval electric motors
11
Shockproof electric motors
11
Mild shock, type 43
Medium shock, type 50 & 60
High shock, type 48
Low magnetic electric motors
12
Low magnetic, type 53
Low magnetic strayfield compensated, type 54
Naval reference list
13
Quality Assurance and Control
14
4
Introd u c t i o n
Combimac
Combimac is a wholly independent, middle size company,
established in the north east part of the Netherlands, in the
town of Emmen. As a supplier of electrical prime movers,
Combimac has for many years been a prominent market
leader, deriving its leading position from the following product
groups:
x Special electric motors
x Industrial and special fans
Combimac’s keyword is knowledge and quality control.
Indeed It is quality that dominates the company’s entire
ELECTRIC MOTORS
production process, from design up to delivery and beyond
in after sales. All necessary monitoring is carried out by
Combimac in the company’s own laboratory, this being the
only way of achieving absolute accuracy. All work is carried
FANS
out to established quality procedures and standards. In short,
Combimac aims for perfection striving to attain continuous
quality.
Thanks to the high quality standards, proven over many years,
Combimac has become an established subcontractor for many
companies. Combimac’s electric motors, installed in vessels of
many Navies and various industrial installations world wide,
live up to the highest reputation.
Special electric motors
As previously mentioned one of Combimac’s main products is a
range of special electric motors. The following types of electric
motors can be manufactured:
x Synchronous and asynchronous alternating current motors
x Single-phase alternating current motors
x Direct current motors
x Low magnetic motors
x Strayfield compensated motors
x Immersible and submersible motors
x (Sea) water-cooled motors
x Permanent magnet motors
The following features can also be incorporated into this range:
x Shock protected up to 300g
x Flameproof (ATEX)
x Increased safety (ATEX)
x Non sparking (ATEX)
x Low noise and vibration
x Up to IEC frame size 450
CUSTOM MADE DESIGN
5
Subm e r s i b l e e l e c t r i c m oto r s
SURFACE COOLED
MOTORS FOR DREDGING
APPLICATION
Being a supplier of custom made electric motors for many
(450 kW, IP68)
years, Combimac is able to offer several particular electric
motor ranges for various specific demands. Parts of the
scope of delivery are submersible electric motors for
various applications. Combimac supplies two main types of
Surfaced
submersible electric motors:
cooled motors
Power rating (kW)
x Surface cooled electric motor, type 55
Type
IEC
2-p
4-p
2-p
Dry operation
x Forced cooled electric motor, type 99
552H61
4-p
Submerged operation
80
0,37
0,25
1,1
0,75
Surface cooled electric motor, type 55
553K61
90
0,75
0,55
2,2
1,5
For continuous submersible operation or operation only when
553N61
100
1,1
1,1
3
3
submerged, Combimac provides a wide range of surface cooled
552P61
112
1,5
1,5
4
4
electric motors. Typical applications for these electric motors
552R61
132
2,2
2,2
7,5
7,5
are dredging-, deep well-, and sewage pumps. The type 55
553U61
160
5,5
4
18,5
15
motors provide the following features:
553W61
180
7,5
7,5
22
22
x Dimensions in acc. with IEC 60072-1
553X61
200
11
11
37
30
x Frame sizes up to IEC 450
552Y61
225
15
15
45
45
x Method of cooling = IC4A1W0
552Z61
250
18,5
18,5
55
55
x Minimum protection class IP67 or IP68
552SS61
280
22
22
90
90
x Insulation class F and H
x Power rating up to 500 kW
WATER COOLED FIRE PUMP MOTORS (60 kW, IP68)
x Mechanical seals, lipseals, air bell construction
Forced cooled electric motor, type 99
Combimac has developed the type 99 forced cooled electric
motors to suit immersible or submersible applications. Often
electric motors have to perform their nominal power rating
when running both dry or wet. As these electric motors are
continuously cooled by means of a forced liquid flow, either
water, oil or any other available cooling liquid, they can provide
maximum power both in submerged and dry conditions.
COOLING JACKET MADE FROM
Other features of this design are the very low airborne noise
SEAWATER RESISTANT BRONZE ALLOY
levels produced by these types of electric motors and the lack
of heat dissipation to its environment that, in some instances,
can be of vital importance. Also because of their more efficient
cooling compared with air-cooled electric motors a high
output in small frame sizes is possible. These types of electric
Forced cooled
motors, normally provided with IEC standard flanges and shaft
WATER COOLED MOTORS
extensions, can be fully manufactured in accordance with the
ON RESILIENT MOUNTS
motors
(75 kW, IP68)
Type
customer’s requirements. Furthermore the type 99 motors
Power rating (kW)
IEC
2-p
4-p
6-p
provide the following features:
993U61
160
18,5
18,5
11
x Cooling jacket available in different materials (Alu-Bronze,
993W61
180
22
22
15
993X61
200
30
37
22
x Dimensions in acc. with IEC 60072-1
992Y61
225
45
45
30
x Method of cooling = IC7A1W7
99261
250
55
55
37
x Frame sizes up to IEC 450
992SS61
280
90
110
55
x Min protection class IP55 or IP68
992VV61
315
160
200
132
x Insulation class F and H
993XX61
355
315
315
200
x Power rating up to 500 kW
993YY61
400
400
400
315
x Mechanical seals, lipseals and airbell construction
993ZZ61
450
450
450
400
Steel, Cast iron)
6
Perma n e n t m a g n et m oto r s
HIGH SPEED PM MOTOR
(14 kW, 9000 rpm)
The use of permanent magnets to create a constant flux in the
air gap, results in synchronous performance with the robust
design of an asynchronous induction motor. The permanent
magnets are made from neodymium iron boron (NdFeB) or
samarium cobalt (SmCo). Both materials provide the powerful
magnetic material at room temperature, with high flux density
at high magnetization.
Based on these design features COMBIMAC are able to offer::
x AC permanent magnet motors
x DC permanent magnet motors
AC permanent magnet motors
Applications that require high torque at low speeds often use
WOUND STATOR PACK
synchronous motors with reducers, as
PM MOTOR
standard induction motors generate plenty of torque, but
unfortunately not at low speeds. Therefore they are not
particularly suited for low-speed operation because their
efficiency drops with reduced speed. However, gearboxes take
up space, reduce efficiency, and need both maintenance and
constant lubrication. Eliminating the gearbox saves space and
PM THRUSTER MOTOR
installation costs, energy, and maintenance, and provides more
(200 kW, 565 rpm)
flexibility in production line and facility design.
New synchronous motor designs using permanent magnets
make it possible to have low speed and high torque in
one package, eliminating gearboxes and other mechanical
components. Also for high speed applications permanent
magnet motors provide improved properties. The motor also
delivers high torque at low speed, a benefit traditionally
associated with dc motors. Main features are:
x high torque at low speed
x smaller sized high speed motors, compared to asynchronous
designs
x static converters possible without an encoder
x canned (or sealed) motor design possible
x power rating up to 1 megawatt
Brushless DC motors
Based on the same mechanical principle as AC permanent
magnet motors, COMBIMAC are able to offer brushless DC
motors for various applications. Main features of brushless DC
ASSEMBLY OF SUBMERSIBLE PM MOTOR
motors are:
x high torque in comparison to wound field motors
x linear speed/torque curves.
x high starting torque with low inertia loads
x easy reversibility by changing polarity.
x high torque at low speed
x smaller sized high speed motors, compared to asynchronous
designs
x static converters do not now require an encoder
x canned (or sealed) motor design possible
x power rating up to 1000 kilowatt
WATER COOLED
SUBMERSIBLE PM MOTOR
(450 kW, 400 rpm)
7
Direct c u r re n t m oto r s
Besides alternating current (AC) electric motors, AC and DC
permanent magnet motors, Combimac is able to supply a wide
range of:
x conventional direct current (DC) electric motors.
x special DC motors
Standard range, type 77
The Combimac conventional standard range of DC electric
DC-ROTORS BEING MANUFACTURED
motors is totally adapted to the latest modern design
standards. Incorporated in the specific DC motor design are
parts, which have been derived directly from the Combimac
squirrel cage electric motors range. Together with a modern
stator core with laminated design, they provide the following
features:
DC MOTOR COMMUTATOR
x Dimensions in acc. with IEC 60072-1
x Min. protection grade IP44 up to IP68
x Method of cooling = IC4A1A1
x Excellent commutation properties
x Low noise & vibration levels
x Voltage range 12 - 440V (DC)
Special DC motors
Various applications, for example submersible battery driven
drives on board silent running leisure crafts in pollution
restricted areas, have special demands. Durability, easy
maintenance and high efficiency require special solutions.
COMBIMAC is able to provide these solutions with DC motors
designed specifically for this purpose and requirements.
DC motors used on board submarines, which are able to run
DC-motors
Power rating (kW)
Type
IEC
3000
1500
rpm
rpm
773H
80
0,75
0,37
0,25
773K
90
1,5
0,75
0,55
773N
100
2,2
1,1
0,75
773P
112
3
1,5
1
773R
132
7,5
4
2,5
773U
160
18,5
7,5
7,5
773W
180
30
15
10
773X
200
37
18,5
15
773Y
225
45
25
20
773Z
250
75
37
25
from the batteries on board submarines, is a totally different
1000
rpm
SUBMERSIBLE DC-DRIVE
application demanding a different spectrum of requirements
(0,4 kW, 1100 rpm, 24 V-dc)
and limiting operating conditions. Again COMBIMAC is able to
design, engineer and manufacture suitable motors for these
purposes.
DC COMPRESSOR MOTOR
(2,2 kW, 3000 rpm, 160/320 V-dc)
H.P. BILGE PUMP MOTOR
(86 kW, 3600 rpm, 170/325 V-dc)
8
Brake m oto r s
Combimac can also offer a wide range of brake motors for
many applications where motors are required to be fully
SMART-L
RADAR MOTOR DRIVE
locked when not operational.
Combimac brake motors cover very special demands for
motors prohibited from any rotary movement when not
activated, for example prime movers driving:
x Radar equipment
x Bow thrusters
x Winches
RADAR DRIVE MOTORS
x Elevators
Combimac can provide the majority of its various motor ranges
with electric brakes. Brakes can be supplied for both AC or DC
operation and also with an additional manual release facility to
enable the release of the brake in the event of a power failure
or emergency.
As manufacturers of custom built electric motors, Combimac
can offer fully compatible motors with or without brakes. As
an example, for a steam valve opening and closing application,
Combimac designed two similar motors, one of which was
provided with an additional electromechanical brake.
RADAR DRIVE MOTOR
- GOALKEEPER
MODULAR AMMO LIFT DRIVE
(BRAKE MOTOR)
9
High- s p e e d e l e c t r i c m oto r s
Various high-speed electric motors, up to 60.000 rpm and 150
kW power rating, have been designed and manufactured to
meet our customers’ high-speed requirements. COMBIMAC
high-speed motors are often used to drive test equipment
connected with bearings, seals and transmissions. Furthermore,
most of the high-speed motors have been designed to meet
the customers’ individual interface and motor performance
requirements.
HIGH SPEED MOTOR
COMBIMAC high speed motors maximize power to size ratios
(75 kW, 17.500 rpm)
offering flexible design parameters, that can be tailored to
a wide variety of load/speed ranges. High torque at low
speed and wide constant power ranges are assured together
with sustained speeds of up to 50.000 rpm, using COMBIMAC
enhanced cooling , bearing and lubrication technology.
Mechanical features
Enclosures
Fan or force cooled, nonventilated, air-purged.
Bearings
High precision, ceramic
or hybrid to suit specific
Bearing lubrication
applications.
HIGH SPEED MOTOR
Pre-lubricated, regreasable,
(25 kW, 9000 rpm)
oil-jet, mist-lubricated.
Materials
Fabricated and stainless steel,
aluminium, titanium.
Speed range
5000 – 60.000 rpm.
Insulation
F, H.
Shaft material
Standard, stainless steel,
monel, duplex.
Shaft design
Standard, tapered, spline.
Auxiliaries
Encoders, resolvers, pick-ups,
probes, tacho generators.
Electrical features
Voltage
up to 690V-AC.
Phase
3 phase.
Frequency
up to 1700 Hz.
Volt/Hertz range
per customer specification.
Number of poles
Single or Multiple.
Variable Frequency Controller
available to suit customer
requirements of build to fit.
HIGH SPEED MOTOR
(120 kW, 15.000 rpm)
High-speed electric motors
Type
Customer references
Power
Speed (rpm)
rating (kW)
x Grasso International (Compressor)
483N13
13
30.000
x BW/IP International (Seals)
991R13
25
9.000
x Siemens Demag Delaval (Turbine / Bearings)
483W13
60
6.000
x SKF Engineering & Research Centre (Bearings)
483X13
75
17.500
x Doorne’s Transmissie (Transmissions)
481SS13
120
7.000
x Siemens (Turbine /Seals)
TC25
150
60.000
10
ATEX
E l e c t r i c motors in accordance with ATEX 94/ 9
For the application of electric motors in hazardous environments
COMBIMAC is able to design and manufacture electric motors in
TOTALLY ENCLOSED SURFACED COOLED
ATEX - EX II 2G EEX-de-IIB-T4
(2,2 kW, 1800 rpm)
accordance with the ATEX 94/9 directive. Explosion protection
for electric motors to IEC 60079-0, is classified into the following
categories protection types.
Flameproof enclosure “d”
Electric motor apparatus destined for Zones 1 and 2 (DIN EN60
079-14, VDE 165 Part1, Electrical Equipment for Hazardous
Areas (except for mines). The constructional requirements
are in accordance with IEC 60079-1. The protection concept is
defined so that all potential ignition sources are housed inside a
flameproof enclosure. Unavoidable sealing surfaces are therefore
designed as flameproof joints, so that, in case of ignition of
an explosive atmosphere inside the enclosure, the explosive
atmosphere is not transferred to the potentially explosive
atmosphere surrounding the enclosure. The application is for all
type of motors, such as squirrel cage, commutator, permanent
magnet and all modes of operations (S1 to S9). Suitable also for
severe starting conditions and variable speed drives.
Increased safety “e”
Electric motor apparatus destined for Zones 1 and 2. The
OIL COOLED ELECTRIC MOTOR
ATEX - EX II 3G EEX-NA-II-T3
(11 kW, 3000 rpm)
constructional requirements are in accordance with DIN EN
50019 IEC 60079-7. The protection concept defines, steps must
be taken to ensure that the creation of sparks, electric arcs
and inadmissible heating processes is prevented during proper
operation of the apparatus. The application is only for squirrelcage motors with adapted motor protection switches.
Non-sparking “n”
Electric motor apparatus destined for Zone 2.
The constructional requirements are in accordance with
DIN EN 50021 IEC 60079-15. The protection concept is defined
as, under normal operation conditions, no sparks, electric arcs
or inadmissible temperatures may occur. The application is
for all types of electric motors with motor protection switches
and overpressure monitoring. Prevention of sparks created
under normal operating conditions should be implemented and
Manufacturers’ information about these measures is provided.
Both the flameproof and increased safety require an EC type
testing certificate from an notified body. This is not required for
the non-sparking versions. COMBIMAC is able to offer all 3 types,
including the necessary type testing certificates.
Further information can be found at: http://europa.eu.int/
comm/enterprise/atex/ or www.iec.ch.
TURNING GEAR ASSEMBLY
11
Naval e l e c t r i c m oto r s
BILGE AND BALLAST PUMP MOTOR
(86/15 kW, 3600/1800 rpm)
Shockproof electric motors
For various naval applications, for example pumps,
compressors, fans or winches, Combimac supplies the
following type of asynchronous AC (alternating current), shock
resistant, electric motors:
x Mild shock - Type 43
x Medium shock - Type 50 / 60
x High shock -Type 48
Every electric motor range provides its own features to suit
the requirements such as shock, low noise & vibration and
performance for each type of application.
Mild shock electric motor, type 43
SEA WATER
The type 43 electric motor is a totally enclosed fan cooled
PUMP MOTOR
motor, meeting the naval requirements for equipment
(0,75 kW,
with mild shock and low noise & vibration requirements.
3600 rpm)
Furthermore in general providing following features:
x Minimum shock class 30 g all directions
x Dimensions in acc. with IEC 60072-1
x Minimum protection grade = IP55
x Method of cooling = IC4A1A1
x Insulation class F
x Housing up to IEC frame 160L = aluminium
x Housing up to IEC frame 400L = nodular cast iron
Medium shock electric motor, type 50 & 60
The type 50 electric motor is similar in design to the type 43
electric motors however meeting higher shock demands for
example the British MOD standard NSSII. Furthermore as a
result of this higher shock resistance all IEC frame sizes up to
INTERNALLY VENTILATED
SHOCKPROOF ELECTRIC MOTOR
(150 kW, 3600 rpm)
400L are manufactured from nodular cast iron.
The design of the type 60 motors is derived from the type 50
motors, thus meeting relatively high shock levels, however
aiming for a lower mass and therefore providing a low weight,
high shock resistant motor. This low weight advantage can
be exploited even more by designing it close coupled to the
equipment which has to be driven, as done on many occasions
for several pump manufacturers.
High shock electric motors, type 48
The type 48 electric motor design has been developed over
the years to meet the most stringent shock levels and, if
required, combined with ultra low noise & vibration levels. The
motors consist of a completely steel welded construction that
MAIN FEED PUMP MOTOR
makes them suitable for meeting shock figures of 340g and
(96 kW, 3600 rpm)
are therefore often used onboard submarines. Furthermore
this particular design can easily be adapted to meet operation
in hazardous environments by developing it into a flame
proof, increased safety or non-sparking design.
12
Naval e l e c t r i c m oto r s
Low magnetic electric motors
For use onboard MCMV’s (Mine Counter Measure Vessel) such
as minehunters and -sweepers, which require electric motors
with a low magnetic and acoustic signature Combimac has
developed two main ranges of electric motors:
x low magnetic AC motor, type 53
x low magnetic strayfield compensated AC motor, type 54
Low magnetic electric motor, type 53
The type 53 low magnetic motors are manufactured, as far
LOW MAGNETIC ELECTRIC MOTORS
as technically possible, from low magnetic materials. Also
the design and the electrical configuration is set up in such
a way that the strayfield and acoustic signature is kept to
its minimum. The type 53 low magnetic motors provide the
following features:
x Shock protected standard up to 60g
x Dimensions in acc. with IEC 60072-1
x Method of cooling = IC4A1A1
x Minimum protection class = IP55 up to IP68
x Insulation class F and H
Low magnetic and strayfield compensated electric motor,
type 54
SINGLE
ROLE MINEHUNTER
The type 54 low magnetic strayfield compensated motors
represent the latest development to minimize the emanating
magnetic strayfields of electric motors. The Combimac low
magnetic strayfield compensated electric motors provide
a significant reduction in the strayfield levels without the
LOW MAGNETIC STRAYFIELD
use of sophisticated electronics or additional ferro magnetic
COMPENSATED OIL
materials. Furthermore it does not require any additional space
COOLED MOTORS
(124 kW, 3600 rpm)
or larger frame sizes.
As the compensation is an integrated part of the motor, the
magnitude of compensation follows automatically the load
of the motor without the use of sophisticated and vulnerable
electronics. So providing an optimal protection against the
threat of strayfield sensitive mines. Furthermore the type 54
motors provide the following features:
x Shock protected standard up to 60g
x Dimensions in accordance with IEC 60072-1
x Method of cooling = IC4A1A1
x Minimum protection class = IP55 up to IP68
x Insulation class F and H
x Degaussing coils
x Combined strayfield compensated/degaussing
OKSOY CLASS
MINEHUNTER
Magnetic level
Combimac type
Design
Low
53
IEC / custom
Ultra low
54
IEC / custom / Nema
13
Refere n ce l i s t
F124-FRIGATE
Due to their proven performance Combimac equipment
is in use for the following Naval ships:
Surface ships
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
S, L, GW, M and LCF-frigates (Netherlands)
F123-frigates (Germany and Thailand)
F124-, F125-frigates (Germany)
K130-corvettes (Germany)
T21, T22 and T23-frigates (UK)
Invincible class aircraft carrier (UK)
T42, T45-destroyers (UK)
Fort George class AOR (UK)
LPD (UK)
ANZAC-frigates (Australia and New Zealand)
Type MEKO 100 corvettes (Malaysia)
F100 frigates (Spain) )
Visby class corvettes (Sweden)
KDX-II destroyers (Korea)
KDX-III destroyers (Korea)
MEKO® 200 frigates (South Africa, Algeria)
Queen Elizabeth class aircraft carrier (UK)
VISBY CLASS CORVETTE
LCF-FRIGATE
Minehunter- and sweepers
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Tripartite minehunters (Netherlands, Belgium and France)
Single Role minehunters (UK and Saudi Arabia)
Oksoy class minehunters (Norway)
Alta class minesweepers (Norway)
Osprey class minehunters, (USA)
Styrsö class minehunters (Sweden)
Bedok class minehunters (Singapore)
Sugashima class minehunters (Japan)
Type 331 minehunters (Germany)
Huon class minehunters (Australia)
Segura class minehunters (Spain)
Lat Ya class minehunters (Thailand)
Mahamiru class minehunter (Malaysia)
KUHA class minehunters (Finland)
Swallow class minehunters (Korea)
Alanya class minehunters (Turkey)
Katanpää class minehunters (Finland)
Kormoran II minehunter (Poland)
HUON CLASS MINEHUNTER
SEGURA CLASS
MINEHUNTER
TRIPARTE
MINEHUNTER
Submarines
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Walrus class submarines (Netherlands)
Trafalgar class submarines (UK)
Vanguard class submarines (UK)
Astute class submarines (UK)
Type 206 submarines (Germany)
Type 212 submarines (Germany & Italy)
Type 209 submarines (Greece, Venezuela, Indonesia,
Argentina, South Africa)
Type 214 submarines (Greece, Korea)
Victoria class submarines (Canada)
Seadragon class submarines (Taiwan)
Sauro class submarines (Italy)
Scorpène submarines (Chile & Malaysia)
S80 submarines (Spain)
Barracuda submarines (France)
ASTUTE CLASS SUBMARINE
VANGUARD CLASS
SUBMARINE
TYPE 214 SUBMARINE
14
Quali t y a s s u ra n ce a n d co n t ro l
SKILLED WORKERS
At Combimac, we operate strictly in accordance with the
procedures laid down in our quality manual. This ensures
that we achieve constant and guaranteed high quality
levels in our products, which are also extensively tested in
our computerized laboratory. The complete logistics within
the factory are computer supported, providing an efficient
production flow and an optimised use of existing labour
and machining capacities. The majority of the testing- and
measuring equipment is fully computer controlled, thereby
providing easily accessible test data. All these factors
contribute towards full product traceability at competitive
DIMENSIONAL
MEASUREMENTS
prices and advantageous delivery times.
THE BEST MATERIALS
AVAILABLE
EXTENSIVE TESTING
MANUFACTURING PROCEDURES
COM B IM AC BV
Kapitein Grantstraat 5 - 7821 AP Emmen
P.O. Box 2038 - 7801 CA Emmen - The Netherlands
Tel. +31 (0)591-611531 - Fax +31 (0)591-619730
E-mail: combimac@combimac.com
www.combimac.com