Low voltage capacitor bank with static
switching operation.
OPTIM EMS-C series
INSTRUCTION MANUAL
(M057B01-03-14A)
OPTIM EMS-C series
2
Instruction Manual
OPTIM EMS-C series
SAFETY PRECAUTIONS
Follow the warnings described in this manual with the symbols shown below.
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a speci c point.
If you must handle the unit for its installation, start-up or maintenance, the following
should be taken into consideration:
Incorrect handling or installation of the unit may result in injury to personnel as well as damage
to the unit. In particular, handling with voltages applied may result in electric shock, which may
cause death or serious injury to personnel. Defective installation or maintenance may also
lead to the risk of re.
Read the manual carefully prior to connecting the unit. Follow all installation and maintenance
instructions throughout the unit’s working life. Pay special attention to the installation standards of the National Electrical Code.
Refer to the instruction manual before using the unit
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can
result in injury or damage to the unit and /or installations.
CIRCUTOR, SA reserves the right to modify features or the product manual without prior noti cation.
DISCLAIMER
CIRCUTOR, SA reserves the right to make modi cations to the device or the unit speci ca-
tions set out in this instruction manual without prior notice.
CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device
speci cations and the most updated manuals.
www.circutor.com
Instruction Manual
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OPTIM EMS-C series
CONTENTS
SAFETY PRECAUTIONS .......................................................................................................................................3
DISCLAIMER ..........................................................................................................................................................3
CONTENTS ............................................................................................................................................................. 4
REVISION LOG .......................................................................................................................................................5
1.- VERIFICATION UPON RECEPTION ................................................................................................................. 6
1.1.- RECEPTION PROTOCOL .......................................................................................................................... 6
1.2.- TRANSPORT AND HANDLING .................................................................................................................6
1.3.- STORAGE...................................................................................................................................................7
2.- PRODUCT DESCRIPTION ................................................................................................................................ 8
2.1.- CAPACITOR BANK COMPONENTS ......................................................................................................... 8
2.1.1. FAST REGULATOR .............................................................................................................................. 8
2.1.2. CPC4 BOARD: ZERO SWITCHING STEP CONNECTION CONTROL...............................................8
2.1.3. POWER BLOCK ................................................................................................................................... 9
3.- INSTALLATION ...............................................................................................................................................10
3.1.- PRELIMINARY RECOMMENDATIONS ...................................................................................................10
3.2.- PREPARATION ......................................................................................................................................... 11
3.3.- INSTALLATION LOCATION ..................................................................................................................... 12
3.4.-CONNECTION OF THE CAPACITOR BANK TO THE MAINS ................................................................. 13
3.5.-POWER CIRCUIT ...................................................................................................................................... 13
3.6.- EXTERNAL ISOLATION AND PROTECTION ELEMENTS ..................................................................... 14
3.7.- AUXILIARY CONTROL VOLTAGE ...........................................................................................................14
3.8.- EARTH CABLE CONNECTION ...............................................................................................................14
3.9.- CURRENT TRANSFORMER (CT) CONNECTION .................................................................................15
4.- STATIC CAPACITOR BANK START-UP .........................................................................................................17
4.1.- BEFORE START-UP .................................................................................................................................17
4.2.- START-UP .................................................................................................................................................17
4.3.- CHECKS AFTER THE CAPACITOR BANK IS CONNECTED AND THE REGULATOR ADJUSTED .... 19
5.- MAINTENANCE ............................................................................................................................................... 20
5.1.- SAFETY REGULATIONS .........................................................................................................................20
5.2.- MAINTENANCE WITH THE CAPACITOR BANK DISCONNECTED ...................................................... 20
5.2.1. BASIC MAINTENANCE PROTOCOL ................................................................................................20
5.2.2. TIGHTENING TORQUE OF THE ELECTRICAL CONNECTIONS ....................................................21
5.2.3. KEY POINTS FOR INSPECTING STATIC SWITCHES ......................................................................21
5.2.4. KEY POINTS FOR INSPECTING CAPACITORS ...............................................................................21
5.2.5. KEY POINTS FOR INSPECTING THE REGULATOR .......................................................................21
5.2.6. CLEANING THE CABINET ................................................................................................................22
5.3.- MAINTENANCE WITH THE CAPACITOR BANK CONNECTED ............................................................ 22
5.3.1. REGULATOR CHECKS ...................................................................................................................... 23
6.- TECHNICAL FEATURES ................................................................................................................................24
7.- OPTIM EMS-C TYPE DIAGRAM ..................................................................................................................... 25
8.- MAINTENANCE AND TECHNICAL SERVICE ................................................................................................26
9.- GUARANTEE ...................................................................................................................................................26
10.- CE CERTIFICATE .......................................................................................................................................... 27
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Instruction Manual
OPTIM EMS-C series
REVISION LOG
Table 1: Revision log.
Date Revision Description
10/14 M057B01-03-14A Initial Version
Note: The images of the units are solely for the purpose of illustration and may differ from the
original unit.
Instruction Manual
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OPTIM EMS-C series
1.- VERIFICATION UPON RECEPTION
1.1.- RECEPTION PROTOCOL
Check the following points when you receive the unit:
a) The unit meets the specications described in your order.
b) The unit has not suffered any damage during transport.
c) Perform an external visual inspection of the unit prior to switching it on.
d) Check that it has been delivered with the following:
- The unit manual
- The regulator installation guide.
If any problem is noticed upon reception, immediately contact the transport
company and/or CIRCUTOR's after-sales service.
1.2.- TRANSPORT AND HANDLING
The transport, loading and unloading and handling of the unit must be carried out with proper precautions and using the proper manual and mechanical tools so as not to damage it.
If the unit is not to be immediately installed, it must be stored at a location
with a rm and level oor, and the storage conditions listed in the technical
features section must be observed. In this case, it is recommended that the
unit be stored with its original protective packaging.
To move the unit a short distance, the unit's oor support proles facilitate handling with a pallet
jack or forklift. (Figure 1)
Figure 1: Transport with pallet jack.
The centre of gravity of some units may be found at a considerable height.
Therefore, when handling with a forklift, it is recommended that the unit be
securely fastened and that no abrupt manoeuvres made. The unit should
not be lifted more than 20 cm off the ground
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Instruction Manual
OPTIM EMS-C series
When unloading and moving the unit, use a forklift with forks long enough to support the entire
length of the base. Otherwise, the forks should be long enough to support at least ¾ of said
depth. The forks must be at and supported rmly by the base. Raise the cabinet by placing the
forks underneath the prole that supports the unit. (Figure 2).
There might be an offset in the centre of gravity from the centre of the cabinet,
as a result of the uneven distribution of loads inside the unit. The necessary
precautions must be taken to prevent the unit from tipping over during abrupt
operations.
Figure 2: Unloading with a forklift.
1.3.- STORAGE
The following storage recommendations shall be followed for the static capacitor banks:
Avoid placing them on uneven surfaces.
Do not store them in outdoor areas, humid areas or areas exposed to splashing
water.
Avoid hot spots (maximum ambient temperature: 40 ºC)
Avoid salty and corrosive environments.
Avoid storing the units in areas where a lot of dust is generated or where the risk of
chemical or other types of contamination is present.
Do not place any weight on top of the unit cabinets.
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OPTIM EMS-C series
2.- PRODUCT DESCRIPTION
The purpose of this manual is to assist during the installation, start-up and maintenance of
OPTIM EM-C series low voltage (LV) capacitor banks with static switching operation. Carefully
read the manual to achieve the best performance from said units.
2.1.- CAPACITOR BANK COMPONENTS
From the electrical standpoint, the unit is made up of the following blocks:
2.1.1. FAST REGULATOR
The static capacitor banks are equipped with Computer Max 6f V12dc fast regulators, which
have static outputs, that is, instead of an output via relay contact, these regulators have a semiconductor-based switch, which enables them to perform operations in fast succession and in
practically every network cycle.
These outputs provide a 12 Vdc activation signal to the + and - inputs of the connection controller boards, as opposed to the CPC4 type zero voltage.
Fast regulators enable regulation with minimum delay, generally between 20 and 100 ms (See
the manual or quick guide of the specic regulator being used)
2.1.2. CPC4 BOARD: ZERO SWITCHING STEP CONNECTION CONTROL
The static capacitor banks come equipped with CP4 boards.
The role of the CPC panel is to control the zero switching step connection of the thyristor-diode
modules, and so avoid connection current transients.
The standard connection diagram of a step can be seen in Figure 3 and with more detail in
section “7.- OPTIM EMS-C TYPE DIAGRAM”.
The CPC panels are activated via a 12 Vdc signal supplied by the 6f V12dc Computer Max
regulator outputs. The standard CPC4 is ready for Umax = 440 V mains.
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Instruction Manual
Th-D 1
Q
Th-D 2
PPPC1
PPPC2
U2 V2 W2
1 3 5
2 4 6
U1
U2
1
32
4
5
Radiador
V1
V2
1
32
4
5
PLACA
1G1
+
-
CPC4
CONTROL
1K1
PLACA
1G1
+
-
CPC4
CONTROL
1K1
12VDC
12VDC
Mando
Alimentación Potencia
Conexión a Condensador de 3 Bornes
OPTIM EMS-C series
Figure 3: Basic connection diagram of the CPC4 to the power block.
2.1.3. POWER BLOCK
The power block of an OPTIM EMS-C unit consists of 2 to 4 groups of thyristor-diode semiconductors + three-phase capacitor + three-pole circuit breaker.
Each group is composed of a cylindrical capacitor with 3 terminals, 2 thyristor-diode modules
attached to a general heatsink and suitable protection elements for the module power (threepole circuit breaker).
Instruction Manual
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