MAKELSAN MRG33 Series User manual

USER MANUAL
MRG/MST33 SERIES
STATIC VOLTAGE REGULATOR
200-300-400-500 KVA
AG-SD-117
Rev. No:0/Rev. Date:

USER MANUAL
MRG/MST33 SERIES
STATIC VOLTAGE REGULATOR
200-300-400-500 KVA

About the Manual
This Manual is prepared for the users of MRG/MST33 Series 200-300-400-500 KVA static
voltage regulator.
Companion Manuals
For more info about this device and its options, please visit www.makelsan.com.tr
Updates
Visit www.makelsan.com.tr for updates. Always use the latest manual.
Shipment
Carrying vehicles or handling accessories must have enough features and characteristics to carry
UPS’s weight.
DO NOT LIFT HEAVY DUTY WEIGHT WITHOUT HELP

CONTENTS
1 SAFETY AND WARNINGS............................................................................................................................................1
1.1 Warnings........................................................................................................................................................................1
1.2 Clearance and Access ................................................................................................................................................2
1.3 Storage ............................................................................................................................................................................2
1.4 Shipment ........................................................................................................................................................................2
2 PRODUCT DESCRIPTION.............................................................................................................................................3
2.1 General Information ..................................................................................................................................................6
2.2 Regulators Operation Modes .................................................................................................................................6
2.2.1 Normal Mode ............................................................................................................................................................6
2.2.2 Mechanical Bypass Mode.....................................................................................................................................6
2.3 User Panel......................................................................................................................................................................7
2.3.1 Opening Screen........................................................................................................................................................8
3 INSTALLATION................................................................................................................................................................9
3.1 Warnings ..................................................................................................................................................................9
3.2 Pre-installation check up.........................................................................................................................................9
3.3 Positioning.....................................................................................................................................................................9
3.4 Transportation Type of Cabinets ......................................................................................................................10
3.5 Mains and Load Connections ..............................................................................................................................10
3.5.1 External Protection................................................................................................................................10
3.5.2 Cabling and fuse configuration..........................................................................................................11
3.5.3 Cable connections...................................................................................................................................12
4 OPERATION ...................................................................................................................................................................14
4.1 Operation Procedure..............................................................................................................................................14
4.1.1 Circuit Breakers....................................................................................................................................................14
4.1.2 First start-up..........................................................................................................................................................14
4.1.3 Setting Mechanical Bypass...............................................................................................................................15
4.1.4 Performing a Complete Shutdown................................................................................................................16
4TABLE of TECHNICAL SPECIFICATIONS..................................................................................................17
6 GUARANTEE..................................................................................................................................................................19
6.1 Terms of Guarantee ................................................................................................................................................19
6.2 Cases Not Covered by the Guarantee...............................................................................................................20
7 CONTACT INFORMATION........................................................................................................................................22

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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1 SAFETY AND WARNINGS
1.1 Warnings
This manual must be read before installing the MRG/MST33 series voltage regulator. The device
can be installed and started only by Makelsan authorized personnel.
Installation or start-up by unauthorized personal may cause damage to the device and serious
injury or death.
The regulator is designed to be used in continuous vertical fixed position applications.
THE REGULATOR MUST BE USED WITH GROUND CONNECTION.
Connect the ground cable before connecting the mains.
Ground currents may be as high as 30mA
THE INPUT BREAKER MUST BE SET OFF POSITION, THE VOLTAGE
REGULATORS MAIN/REGULATOR BREAKER MUST SET THE ‘’0’’ POSITION
BEFORE MAINTENANCE.
Service-Maintenance
All servicing and maintenance is done internally. All parts in the device can be serviced and
replaced only by a trained technician.
Preventative maintenance is recommended at least once a year from the
installation by authorized technical personnel. (This service will be
provided for a fee by our authorized MAKELSAN personnel.)
Fire extinguishing equipment must be kept nearby the regulator.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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1.2 Clearance and Access
Clearance
There must be spaces at least 1 meter for regulators fans around. Should not be permanent or
temporary use within the limits specified. Otherwise, the regulator performance will decrease.
Access
Operator reaches regulator via front, side and top panel on 200-300-400-500 kVA regulator,
enough area must be left for operator.
1.3 Storage
Regulator should be kept in a room or area where is protected from excessive moisture and heat
before commissioning. Regulator cabinets must be kept in the original packaging.
1.4 Shipment
Carrying vehicles must have be equipped properly and have features and characteristics
sufficient to carry regulator.
The regulator device shipment must be done on pallets.
Cabinet is equipped with four-wheel. In this way, it can be placed by moving easily. These wheels
are to be used on smooth surfaces only.
The front wheels of regulator must be locked after positioning properly. The rear side wheels
are fixed.
Move the regulator as rarely as possible.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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2 PRODUCT DESCRIPTION
Makelsan MRG/MST33 static voltage regulators are extensive input voltage ranged regulator
which controlled by microprocessor. MRG/MST33 are high efficiency and high speed static
voltage stabilizers.
General View

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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Front View
1
Users Panel
2
Input Breaker
3
Evacuation Channel
4
Bypass/Regulator Breaker

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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Rear View
1
Main Connectors Terminal
2
Load Connectors Terminal

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2.1 General Information
General operation topology of MRG/MST33 Series can be recognized as follows:
MRG/MST33 Series Static Voltage Regulator Functional Diagram
MRG/MST33 Series Static Voltage Regulator (SVR) transfers the electrical energy from the main
supply to output and monitors output voltage magnitude continuously.
If there is a distortion in the output voltage according to a desired output voltage value, the
microcontroller unit selects the appropriate input-output windings of the transformer
immediately and then semiconductor power switches (thyristors) and ends of the windings
connect the SVR input-output for stay in appropriate values.
Thus Static Voltage Regulator (SVR), the voltage magnitude of the corresponding additional
energy generated by the electrical energy received from the network, by adding to its network
voltage amplitude (or removing) obtains an output voltage magnitude between set points
2.2 Regulators Operation Modes
MRG/MST33 series operated in the following modes:
Normal Mode
Mechanical Bypass Mode
2.2.1 Normal Mode
In this mode, regulator feeds the load through the regulated voltage.
2.2.2 Mechanical Bypass Mode
Operator sets main position to Main/Regulator breaker for operating mechanical bypass mode.
In this mode; the maintenance bypass load is directly or mains power for the loss of energy of
the load during faults

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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2.3 User Panel
User panel consists of mimic diagram, LCD screen, ON/OFF button and menu keys. The regulator
can be controlled via this panel.
1
Input Led: Flashes while the main within out of limits. Illuminates when
main is normal.
2
Bypass Led: Illuminates while the loads are fed through bypass line.
3
Normal Led: Illuminates while the loads are fed through regulator works.
4
Output Led: Flashes while the main within the limits and output breaker
works.
5
Alarm/Warning Led
6
LCD Display
7-10
Menu Keys
11
ON/OFF Button
Menu Flow Chart
Output Voltage Values
(For all fazes)
Output Current Values
(For all fazes)
Input Voltage Values
(For all fazes)

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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2.3.1 Opening Screen
When the front panel monitor is turned on, firstly opening screen is observed. Output voltage,
output current, input voltage (for all fazes) can be observed here. If no button is pressed for 5
minutes, system returns to the opening screen. Use up and down keys to see output voltage,
output current and input voltage.
Output Voltage (L1, L2, L3)
Output Current (L1, L2, L3)
Input Voltage (L1, L2, L3)

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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3 INSTALLATION
This section contains the warnings and control actions that must be performed before the
REGULATOR start-up. Additionally, you will find here important information about the
REGULATOR cabins transportation, positioning and connections.
3.1Warnings
The regulator must be installed by a certified electrician of Makelsan.
The warranty is valid only for the regulator installed by a certified
electrician of Makelsan.
Proper safety gear must be used to protect the skin and the eyes from electrical arcs.
ESD-protected rubber gloves should be used.
Remove any metal accessories (ring, watch, etc.) before working on the device.
Regulator needs three phase and four cable (+ground) supply system for input. This supply
system type is confirmed as IEC60364-3 standards.
3.2 Pre-installation check up
Before installation of the regulator the following control actions must be taken, these first and
most important steps will secure the accurate operation of the product.
Check if any damage was done to the regulator during transportation. Report any
damages instantly.
Make sure that model power rating is right. Check the regulator label for the actual
power rating.
3.3 Positioning
The regulator is designed for the indoor use. Keep the device in a cool and dry place, with the air
flow, humidity and temperature values must be within the specified range.
In the 200-300-400-500kVA MRG/MST33 series, fresh air enters the device from the front and
goes out from the fans on the rear side of the device. Care must be taken in order not to cover
the air entrance and exit spots. Regulator must be positioned on a place where it is protected
from water etc. contact risks.
If the area is dusty, optional filters must be used for such environment. These filters usage must
be done as per instructions document.
Climate must be provided to reach the maximum level of performance of regulator.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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3.4 Transportation Type of Cabinets
Carrying vehicles or handling accessories must have enough features and characteristics to
carry regulator’s weight.
Cabinet is equipped with four-wheel. In this way, it can be placed by moving easily. These wheels
are to be used on smooth surfaces only.
3.5 Mains and Load Connections
Recommended connections of MRG/MST33 Series Static Voltage Regulator
3.5.1 External Protection
To protect the AC inputs, thermal magnetic breakers or V type breakers must be installed on the
distribution board.
Over current protecting must be installed on mains input distribution board and fuses must be
chosen 135% higher rated than the ones given in the table below. Fuses must be C-type.
Ground leakages flow to the ground through the EMI filters on the input and the output of the
regulator. Makelsan recommends the use of 30mA rated relays for handling leakage currents.
Those relays must also be:
Resistant to both positive and negative DC pulses,
And not sensitive to transient currents.
Must be sensitive to currents which is average between 0,03-1 A.
MAIN
INPUT
ELEC. DISTRUBUTION
PANEL
ELECTRONICAL REGULATOR
COMPENSATION PANEL
GENERATOR
AUTOMATIC
SWITCH PANEL
LOAD

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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3.5.2 Cabling and fuse configuration
Full load input and output currents must be reviewed for proper cabling and fuse selection.
*For standard model SVR
Regulator
Power
Input Cable
Size(mm²)
Output Cable
Size(mm²)
Ground Cable
Size(mm²)
Input Fuse
Value
M. Bypass Fuse
Value
Output Fuse
Value
200KVA
4×150
4×150
1×150
3×400A
4×250A
3×250A
300KVA
4×240
4×240
1x240
3×630A
4×400A
3×400A
400KVA
4x(2x150)
4x(2x150)
2x150
3×800A
4×500A
4×500A
500KVA
4x(2x185)
4x(2x185)
2x185
3x1000A
4×630A
4×630A
The length of the cable must not be over 5 meters. Maintenance bypass fuse that is only for using by
Makelsan service technician and have to be locked.
*For large input voltage range SVR
Regulator
Power
Input Cable
Size(mm²)
Output Cable
Size(mm²)
Ground Cable
Size(mm²)
Input Fuse
Value
M. Bypass Fuse
Value
Output Fuse
Value
200KVA
4×240
4×150
1×150
3×630A
4×250A
3×250A
300KVA
4x(2x150)
4×240
1x240
3×800A
4×400A
3×400A
400KVA
4x(2x240)
4x(2x150)
2x150
3x1000A
4×500A
4×500A
500KVA
4x(3x185)
4x(2x185)
2x185
3x1250A
4×630A
4×630A
The length of the cable must not be over 5 meters. Maintenance bypass fuse that is only for using by
Makelsan service technician and have to be locked.
It should be noted that with non-linear loads, neutral current may rise up to 1.5 times the phase
current

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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3.5.3 Cable connections
All electrical connections of the regulator are made from the front side of the device.
ATTENTION! 3 pole-circuit breakers (switch) are used for the input and
output of regulator, Neutral line must not be interrupted.
1
Main Connectors Terminal
2
Load Connectors Terminal
3
Ground Connection
Electrical Connections
Read the following steps to connect the cables properly:
1. Turn OFF all the distribution board breakers (both input and output distribution boards) to
make sure that the load and mains are completely disconnected from any cable.
2. Remove the cover to make the regulator wiring connection ,
3. Connect the ground cable.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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4. Make sure that the circuit breakers are OFF. The use of these circuit breakers is explained on
the operation section.
Input breakers is OFF position.
5. Connect the input cables;
R to INPUT L1,
S to INPUT L2,
T to INPUT L3,
N (Neutral) to INPUT N.
6. Check the phase sequence.
7. Repeat steps 4-5 for output cables.
Make sure that the loads are isolated from the regulator output if they are
not ready to be connected.
Make sure that the cables are connected properly before regulator is
started. Additionally, check if there is galvanic isolation transformers at
input of regulator and consider the local directions.
Check the grounding before starting the regulator. Wrong works or
grounding on regulator or other devices of installation may be hazardous.
Wrong works and grounding may damage regulator and another system on
the installation.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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4 OPERATION
4.1 Operation Procedure
You can find information about circuit breaker, first start-up, setting mechanical bypass, turning
regulator off in this section.
4.1.1 Circuit Breakers
There are 1 input breaker (CB1) and one main/regulator choosing breaker (CB2) on the front
side of the regulator.
4.1.2 First start-up
1. Turn all circuit breakers OFF position.
2. Take the main supply/regulator selector switch sets REGULATOR position. Regulator will
operate normal mode. (all 3 phases will start up)
3. Take Input breaker ON position.

MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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4. Check the regulator has switched to normal operation mode, via mimic diagram LEDs and
LCD panel.
5. The loads which are connected to regulator can be turned on.
After all these steps, check that load is fed through regulator via mimic diagram. In a contrary
situation, check regulator total and phase loads.
4.1.3 Setting Mechanical Bypass
When the voltage regulator to do maintenance or experiencing a fault condition on the
mechanical bypass mode, power is transferred from the main.
For this; loads in the voltage regulator output is disabled. Input switch sets OFF.
The main supply / regulator selector switch sets “MAIN" position. Then input switch sets ON
again.