FRO­NIUS Autotransformer MW 2200 Guide

Autotransformer MW 1700, MW
2200, TT 1700, TT 2200
Fitting Instructions
Spare Parts List
/ Battery Charging Systems / Welding Technology / Solar Electronics
Autotransformer
EN
42,0426,0037,EN 002-30032012

1
EN
Contents
General remarks ........................................................................................................................................... 2
Machine concept ...................................................................................................................................... 2
Controls and connections ......................................................................................................................... 2
Before putting the unit into service ................................................................................................................ 3
Safety ....................................................................................................................................................... 3
Required connection cables ..................................................................................................................... 3
Mounting the connection cables ............................................................................................................... 3
Fitting the connection cable to the auto-transformer ................................................................................ 4
Mounting a plug on the mains cable......................................................................................................... 4
Final check ............................................................................................................................................... 4
Putting the unit into service ........................................................................................................................... 5
Safety ....................................................................................................................................................... 5
Mounting the fixing brackets to the trolley ................................................................................................ 5
Mounting the system components on the trolley ...................................................................................... 5
Putting the unit into service ...................................................................................................................... 6
Care, maintenance and disposal ................................................................................................................... 7
General remarks ...................................................................................................................................... 7
Every time before starting up ................................................................................................................... 7
Every 6 months ........................................................................................................................................ 7
Every 12 months ...................................................................................................................................... 7
Final disposal ........................................................................................................................................... 7
Troubleshooting............................................................................................................................................. 8
General remarks ...................................................................................................................................... 8
Fault / Cause / Remedy ........................................................................................................................... 8
Technical data ............................................................................................................................................. 10
Safety ..................................................................................................................................................... 10
MW/TT 1700/2200 auto-transformer...................................................................................................... 10
Spare parts list
Fronius Worldwide

2
General remarks
Machine concept
(1) Mains switch ... for switching all system components of the welding set on and off
centrally
(2) Strain relief device for the power source ... for leading-through the connection
cable to the power source
(3) Strain relief device for the auto-transformer ... for leading-through the mains
cable
Controls and
connections
The digital family of machines provides tremendous flexibility and easy adaptability to
many varied tasks. The reasons for these welcome characteristics may be found not
only in the modular product design, but also in the scope that the system gives for
troublefree system extensions. Among other things, features such as their high-grade
componentry, protective plastic surround and powder-coated aluminium housing ensure
that these units are highly reliable and durable.
The MW/TT 1700/2200 auto-transformer was specially designed to meet the
requirements of the digital family of machines and can be used with MW 1700/2200 and
TT 1700/2200 power sources. It makes it possible for digital power sources to be run on
mains voltages of 460 V as well.
Fig.1 Front of auto-transformer Fig.2 Rear of auto-transformer
(1) (3)(2)

3
EN
The following strain relief devices are included in the scope of supply of the auto-
transformer:
- Strain relief device for the MW/TT 1700/2200 power source, for 3xAWG12
connection cable
- Strain relief device for the MW/TT 1700/2200 auto-transformer, for 3xAWG12
connection cable
Carry out the following steps for both the power-source connection cable and the
connection cable for the auto-transformer.
1. Shift the mains switch on the auto-transformer into the “0” position
2. Unplug the unit from the mains or otherwise disconnect the mains power supply
3. Take the cover off the auto-transformer
4. Strip off the insulation from approx. 170 mm (6.7 in.) of the end of the connection
cable
5. Fit a wire-end ferrule to the PE conductor
Before putting the unit into service
Power source 3x AWG12, 3.31mm² (.1304 in.) 43,0004,1993
Auto-transformer 3x AWG12, 3.31mm² (.1304 in.) 43,0004,1993
WARNING! Work that is not carried out correctly can cause serious injury and
damage. The actions described below may ONLY be carried out by skilled,
Fronius-trained technicians! Observe and follow the “Safety rules” in the
“Operating Instructions” manual for the power source.
WARNING! An electric shock can be fatal. Before opening up the unit, shift the
mains switch on the unit into the “0” position and unplug it from the mains or
otherwise disconnect the power supply.
6. Shorten the phase conductors to
approx. 150 mm (5.9 in.) and fit wire-
end ferrules to them
NOTE! If you do not use any
wire-end ferrules, there is a risk
of short circuiting between the
phase conductors.
7. Insert the connection cable into the
strain relief device.
8. Tighten the clamping nut
Fig.3 Mounting the connection cables
Safety
Required
connection
cables
Mounting the
connection
cables

4
Mains cable
“INPUT 50/60 Hz”
Power source
“OUTPUT 50/60 Hz”
PE 460V 460V 230V 230V PE
Fig.4 Terminal strip
Fitting the
connection cable
to the auto-
transformer
NOTE! Running the auto-
transformer without ALL of the
cables being properly connected
can cause serious damage.
Always connect all the phase
conductors and the PE conductor
3. Connect the phase conductors and
the PE conductor of the power-source
connection cable to the “OUTPUT 50/
60 Hz” connection points for the
power source.
4. Connect the phase conductors and
PE conductor of the auto-transformer
connection cable to the “INPUT 50/60
Hz” connection points for the mains
cable.
Final check
WARNING! An electric shock caused by the mains voltage or the auto-
transformer output voltage can be fatal. The following operations have to be done
with the unit switched on. Do NOT on any account touch the auto-transformer or
any of its parts while it is still connected to the mains.
1. Check that the phase conductors and PE conductor of the connection cable are
correctly connected
2. Check that the phase conductors and PE conductor of the connection cable are
firmly attached to the terminal strip
3. Shift the mains switch on the auto-transformer into the “0” position
4. Plug the unit into the mains or otherwise restore mains power supply
5. Using a suitable testing instrument, check the mains voltage on the “INPUT 50/60
Hz” mains-cable connection points
6. Shift the mains switch on the auto-transformer into the “I” position
7. Using a suitable testing instrument, check the output voltage on the “OUTPUT 50/60
Hz” power-source connection points
8. Shift the mains switch on the auto-transformer into the “0” position
9. Put the cover back on the auto-transformer
NOTE! The housing screws provide a suitable PE conductor connection for
earthing (grounding) the housing. These screws must NOT be replaced by any
other screws which do not provide a reliable PE conductor connection.
10. Shift the mains switch on the auto-transformer into the “I” position
11. Perform an insulation and PE conductor test, using suitable testing equipment. Do
this by placing the test-prod against any of the fixing-screws of the cover.
12. Shift the mains switch on the auto-transformer into the “0” position
13. Unplug the unit from the mains or otherwise disconnect the mains power supply
The auto-transformer is designed to run on the mains voltage given on the rating plate.
If you intend to fit a mains plug to the auto-transformer connection cable, this must be
mounted in accordance with the applicable national Standards. For details of fuse
protection of the mains supply lead, please see the Technical Data.
NOTE! Inadequately dimensioned electrical installations can lead to serious
damage. The mains plug and mains supply lead, and their fuse protection, must
be suitably dimensioned.
Mounting a plug
on the mains
cable

5
EN
Putting the unit into service
WARNING! Work that is not carried out correctly can cause serious injury and
damage. The actions described below may ONLY be carried out by skilled,
Fronius-trained technicians! Observe and follow the “Safety rules” in the
“Operating Instructions” manual for the power source.
CAUTION! Danger from the trolley toppling over. The - relatively heavy - auto-
transformer must always be mounted as the bottom unit on the trolley. This
favourable centre-of-gravity position reduces the risk of the trolley toppling over.
Important! The following example of how to mount the auto-transformer onto the trolley
is for a combination of an MW 2200 power source, an FK 2200 cooling unit and an
“Easy” trolley. To put together any other combination, proceed analogously.
Fig.5 Mounting the fixing brackets
1. Turn the trolley upside-down, standing
it on its handles, then hold it in the
vertical.
2. Use a sharp pointed tool to pierce the
rubber mat where it lies over the holes
in the baseplate
3. Turn the trolley over and place it on its
wheels again
4. Attach each fixing bracket to the
baseplate with 3 screws
Fig.6 Mounting the system components
Stack the system components on top of
one another, fixing each unit to the one
below it (and the auto-transformer to the
trolley) with 4 screws.
Important! When mounting the power
source, take care with the connector to the
cooling unit. Do not subject the cable
connection to tensile strain.
Safety
Mounting the
fixing brackets to
the trolley
Mounting the
system
components on
the trolley

6
WARNING! Operating the equipment incorrectly can cause serious injury and
damage. Before putting the unit into service for the first time, read the following
sections in the “Operating Instructions” manual for the power source:
- Safety rules
- Before putting the power source into service
- Putting the power source into service
The ventilation arrangements for the auto-transformer are a very important safety
feature. When choosing the machine location, make sure that it is possible for the
cooling air to enter and exit unhindered through the louvers.
1. Shift the mains switch of the power source into the “O” position
2. Shift the mains switch on the auto-transformer into the “0” position
3. Plug the auto-transformer unit into the mains or otherwise restore mains power
supply.
4. Shift the mains switch on the auto-transformer into the “I” position
5. The auto-transformer is now ready for operation
Putting the unit
into service

7
EN
Care, maintenance and disposal
General remarks Under normal operating conditions, the auto-transformer needs only a minimum of care
and maintenance. However, to ensure continued trouble-free operation of your welding
set for years to come, there are a few basic points that you should observe.
WARNING! An electric shock can be fatal. Before opening up the unit, switch it
off, unplug it from the mains and put up a clearly legible and easy-to-understand
warning sign to stop anybody inadvertently switching it back on again. If
necessary, discharge the electrolytic capacitors. The housing screws provide a
suitable PE conductor connection for earthing (grounding) the housing. These
screws must NOT be replaced by any other screws which do not provide a
reliable PE conductor connection.
Every time before
starting up
- Inspect the mains plug and mains cable for any signs of damage
- Check that there is at least 0.5 m (20 inches) of clear space around the outside of
the unit, so that the cooling air can flow in and out unhindered
NOTE! Also, the air intake and outlet openings must NOT be covered over - not
even partially.
- Remove the side panels and blow clean the inside of the unit with dry, reduced-blow
compressed air.
NOTE! Risk of damage to electronic components. Do not aim air-jets at
electronic components from too close a range.
- If a lot of dust has accumulated, clean the cooling-air ducts
Every 6 months
Final disposal At the end of its useful life, only dispose of equipment in accordance with all applicable
national and local regulations.
Perform a safety inspection.
(see the section headed “Safety rules” in the “Operating Instructions” manual for the
power source)
Every 12 months

8
General remarks
Troubleshooting
WARNING! An electric shock can be fatal. Before opening up the auto-
transformer, shift the mains switch to the “0” position, unplug the unit from the
mains and put up a clearly legible and easy-to-understand warning sign to stop
anybody inadvertently switching it back on again. The housing screws provide a
suitable PE conductor connection for earthing (grounding) the housing. These
screws must NOT be replaced by any other screw-type connections which do not
provide a reliable PE conductor connection.
Power source does not function
Mains switch is ON, but indicators are not lit up
Cause: There is a break in the mains lead; the mains plug is not plugged in
Remedy: Inspect the mains supply lead; if necessary, check the mains voltage
Cause: Mains fuse is faulty
Remedy: Change mains fuse
Cause: Mains outlet socket or plug is faulty
Remedy: Change faulty components
Cause: Mains switch is faulty
Remedy: Change mains switch
Cause: Phase conductor (L1, L2) wrongly connected
Remedy: Connect phase conductor as described
Mains fuse or automatic circuit-breaker is tripped
Cause: Mains fuse protection is too weak
Remedy: Ensure correct fuse protection of mains supply lead, as per rating plate
Cause: Short-circuiting on the transformer windings
Remedy: Replace the auto-transformer
Output voltage is too low
Cause: Wrong mains voltage
Remedy: Check the mains voltage
Cause: Mains supply leads not connected up correctly
Remedy: Correct the mains connection
Fault / Cause /
Remedy

9
EN
Auto-transformer housing feels hot
Cause: Permitted duty cycle has been exceeded
Remedy: Shift the mains switch into the “0” position and allow the auto-transformer
to cool down
Cause: Power consumption of the connected welding set is too high
Remedy: Check the power consumption of the connected welding set
Cause: Fan is faulty
Remedy: Check fan connections, exchange fan
Cause: Incorrect deployment location
Remedy: Change deployment location so that air can flow freely through the
openings in the housing
Cause: Ambient temperature is too high
Remedy: Reduce the ambient temperature, moving the machine to a different
location if necessary
Cause: Inside of machine is dirty
Remedy: Open up the auto-transformer and blow it clean with dry compressed air
Fault / Cause /
Remedy
(continued)

10
Safety
Technical data
NOTE! Incorrectly dimensioned mains plugs, mains supply leads and fuse
protection can lead to serious damage. If the power source being used is
designed to run on a special voltage, the Technical Data shown on the rating
plate apply. The mains plug and mains supply lead, and their fuse protection,
must be suitably dimensioned.
Mains voltage 2x460 V
Mains voltage tolerance +/- 10 %
Mains frequency 50/60 Hz
Output voltage 2x230 V
Mains fuse protection (slow-blow) 16 A
Apparent power, max. 6.6 kVA
Apparent power, effective 3.7 kVA
Cos phi 0.9
Primary current, max. 14.5 A
Primary current, effective 8 A
Secondary current at
10 min / 40 °C 40 % d.c. 28.9 A
10 min / 40 °C 100 % d.c. 16 A
Degree of protection IP 23
Type of cooling F
Insulation class F
Dimensions L x W x H mm (in.) 470 x 180 x 175 (18.5 x 7.01 x 6.89)
Weight 17.55 kg (38.69 lb.)
Marks of conformity CSA
MW/TT 1700/2200
auto-transformer

ud_fr_st_tb_00149 012012
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Auto - Transformer
1/1
el_fr_st_so_00698 012003
41,0009,0217 - PE
33,0030,0092
43,0006,0117
43,0002,0257
42,0406,0137
42,0405,0367
42,0200,4070
41,0009,0216 - 32A
Auto- Transformer 2x460-230TT/ MW 1700/2200 4,001,620,800
42,0405,0367
AM2,0201,1607
BE2,0201,1608
42,0300,0648

ud_fr_st_so_00082 012011
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Tel: [phone], Fax: [phone]
E-Mail: [email protected]
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