Tecnoware FSTEL1K2M User manual

ELECTRONIC STABILIZER
STABILIZZATORI ELETTRONICI
User’s manual
Manuale utente

Index
User’s Manual - English 1
Safety Warnings 1
1 Introduction 2
2 General Characteristics 3
3 Receipt and site selection 4
4 External Description 4
4.1 Front Panel ............................................................................ 4
4.2 Front Side and Rear Side ............................................................. 5
4.2.1 Single-Phase models ...................................................................... 5
4.2.2 Three-Phase models ...................................................................... 7
4.3 Input/output Terminals ..............................................................
5 Electrical Installation 10
5.1 Installation ............................................................................ 11
6 Functioning 12
6.1 Turning ON and OFF ................................................................. 12
6.2 Load Control .......................................................................... 13
6.3 Manual Bypass ........................................................................ 13
7 Technical Characteristics 14
7.1 Load Curve ............................................................................ 15
8 Maintenance 15
8.1 AVR Cleaning ......................................................................... 15
8.2 Operator Safety ...................................................................... 15
9 Service 16
Conformity to the European Directives 16
Product Disposal 16

Indice
Manuale Utente – Italiano 17
Avvisi di Sicurezza 17
1 Introduzione 18
2 Caratteristiche Generali 19
3 Ricevimento e Collocazione 20
4 Descrizione Esterna 20
4.1 Pannello Frontale .................................................................... 20
4.2 Fronte e Retro ........................................................................ 21
4.2.1 Modelli Monofase ......................................................................... 21
4.2.2 Modelli Trifase ............................................................................ 23
4.3 Morsettiera d’Ingresso/Uscita ...................................................... 25
5 Installazione Elettrica 26
5.1 Installazione .......................................................................... 27
6 Funzionamento 28
6.1 Accensione e Spegnimento ......................................................... 28
6.2 Controllo del carico .................................................................. 2
6.3 Bypass Manuale ....................................................................... 2
7 Caratteristiche Tecniche 30
7.1 Grafico della Potenza ............................................................... 31
8 Manutenzione 31
8.1 Pulizia del prodotto.................................................................. 31
8.2 Sicurezza dell’Operatore ........................................................... 31
9 Servizio Assistenza 32
Conformità alle Direttive Europee 32
Smaltimento del Prodotto 32

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ELECTRONIC STABILIZER 1 User’s manual
User’s Manual - English
Safety Warnings
Read this manual carefully and completely before installing and using the TECNOWARE Electronic
Stabilizer, which, from here after, will also be referred to as AVR
This manual should be kept close to the AVR and read before the AVR is installed and used
The AVR must be used only by properly trained personnel To ensure correct and safe operations, it is
necessary that operators and maintenance personnel observe the general safety Standards as well as the
specific instructions included in this manual
Risk of electric shock: do not remove the cover The AVR contains internal parts which are at a high
Voltage and are potentially dangerous, capable of causing injury or death by electric shock
The electric installation has to be done by qualified personnel Follow all the Safety Standards (CEI
Standards in Italy or IEEE elsewhere) for the Input/Output connections and for the right section of
Input/Output cables
There are no internal parts in the AVR which are user serviceable Any repair or maintenance work must
be performed exclusively by qualified technical personnel authorized by TECNOWARE TECNOWARE
declines any responsibility if this warning is disregarded
It is compulsory to ground the AVR according to Safety Standards
Risk of electric shock at the Output lines when the AVR is ON or in Bypass Mode
Risk of electric shock at the Output lines while the unit is connected to the AC utility line
We recommend to use a dedicate AC Input/Output power line for the AVR
Do not obstruct ventilation slots or holes and do not rest any object on top of the AVR
Do not insert objects or pour liquids in the ventilation holes
Install the AVR indoors, in a protected, clean and moisture-free environment
Do not expose to the direct sun light
Do not keep liquids, flammable gases or corrosive substances near the AVR

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User’s manual 2 ELECTRONIC STABILIZER
1Introduction
Principle of compensated AC Voltage Regulator
TECNOWARE Electronic Stabilizer is an AVR (AVR means Automatic Voltage Regulator): this product is the result of
constant technological research aimed at obtaining the best performance at the lowest cost.
This product is a compensated type AC voltage regulator.
It consists of MCU control unit, voltage regulator unit, compensator transformer, adjust transformer, and
input/output protection components, etc. (see figure 1).
When the grid voltage is not stable, MCU control unit samples the output voltage, and according to the
requirement of setting accuracy, keeps the output voltage within the desired voltage range, by means of
adjustment of the voltage regulator unit.
Figure 1 – Block Diagram of Electric Stabilizer
AVR has a short response time, high efficiency, high reliability, can work continuously for a long time. It is
applicable for all kinds of instruments, meters, communications, home appliances and work site.
This manual is a guide that enables you to correctly install and use your AVR This
manual includes important SAFETY instructions for the operator, for the AVR correct
installation, and gives useful advice on the product maintenance For any type of
problem, please refer to this manual before calling the customer service
Electronic Stabilizer is constantly being developed and improved: consequently, your unit may differ somewhat
from the description contained in this manual.

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ELECTRONIC STABILIZER 3 User’s manual
This manual includes the following models:
SINGLE-PHASE ELECTRONIC STABILIZERS
Code Power
FSTEL1K2M
1
.2 K
VA
FSTEL2K5M
2.5 K
VA
FSTEL3K5M
3.5 K
VA
FSTEL6KM
6 KVA
FSTEL KM
KVA
FSTEL12KM
12 KVA
FSTEL18KM
18 KVA
FSTEL25KM
25 KVA
FSTEL35KM
35 KVA
THREE-PHASE ELECTRONIC STABILIZERS
Code Power
FSTEL3K5T
3.5 KVA
FSTEL6KT
6 KVA
FSTEL KT
KVA
FSTEL12KT
12 KVA
FSTEL18KT
18 KVA
FSTEL25KT
25 KVA
FSTEL30KT
30 KVA
FSTEL35KT
35 KVA
FSTEL50KT
50 KVA
FSTEL55KT
55 KVA
FSTEL60KT
60 KVA
FSTEL75KT
75 KVA
FSTEL100KT
100 KVA
FSTEL120KT
120 KVA
In this manual Electronic Stabilizer will simply be referred to as AVR.
2General Characteristics
AVR has all the advanced features which guarantee maximum reliability and safety:
•Output Voltage regulation ±3%
•Protection from overload and short circuits
•Automatic restart after Blackout, once AC utility power comes back on.
•Graphic Display for visualization of the Input and Output Voltage measurements, percentage of load,
alarms, overload and fault condition.
•Acoustic signals of various kinds indicating alarm situations
•High efficiency
•Maximum reliability
•Smart design and easy to use

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User’s manual 4 ELECTRONIC STABILIZER
3Receipt and site selection
Carefully remove the AVR from its packaging, and carry out a meticulous inspection. We recommend keeping the
original packaging in a secure place, in case you need to send the AVR for maintenance purposes. In case of
transport damage, notify the carrier and dealer immediately.
We recommend paying attention to the below points in order to choose a correct placement for your AVR:
•The AVR is designed to operate in a protected environment (e.g. offices). We therefore recommend
installing it in a place with very little or no humidity, dust or smoke.
•When the AVR is brought from a cold place to a warmer place, humidity in the air may cause condensation
in the AVR. In this case, allow AVR to stand for two hours in the warmer place before beginning with the
installation.
•In all circumstances, see the “Technical Characteristics” chapter for environmental specifications and
check that the selected area meets these criteria.
•During normal operation the AVR discharges a minimal amount of heat. So it is necessary to leave at least
20 cm of unobstructed space all around the AVR in order to keep it properly ventilated.
•Do not obstruct ventilation holes.
•Do not insert objects or pour liquids in the ventilation holes.
•Do not rest any object on top of the AVR.
•Do not keep liquids, flammable gases or corrosive substances near the unit.
•Install the AVR on a properly tiled floor. Avoid the installation on a floor that is not tiled flat.
4External Description
4 1 Front Panel
AVR informs the user about operating status, alarm conditions and measurements through a display on the front
panel (see figure 2).
Figure 2 – Front panel display

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ELECTRONIC STABILIZER 5 User’s manual
1 Delay Time
2 Normal
3 Protection (fault Mode)
4 Over Voltage Protection
5 Low Voltage Protection
6 Over Temperature Protection
7 Input Voltage
8 Output Voltage
9 Output Load Level
10 Overload protection
Single-Phase Electronic Stabilizer has one display on the front panel.
Three-Phase Electronic Stabilizer has three display on the front panel, one for each phase.
4 2 Front Side and Rear Side
4 2 1 Single-Phase models
Figure 3 – Front side (FSTEL1K2M, FSTEL2K5M, FSTEL3K5M, FSTEL6KM models)

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User’s manual 6 ELECTRONIC STABILIZER
Figure 4 – Rear side
(on the left:FSTEL1K2M, FSTEL2K5M models – on the right: FSTEL3K5M, FSTEL6KM models)
Figure 5 – Front side and rear side (FSTEL9KM, FSTEL12KM, FSTEL18KM, FSTEL25KM, FSTEL35KM models)

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ELECTRONIC STABILIZER 7 User’s manual
4 2 2 Three-Phase models
Figure 6 – Front side and rear side
(FSTEL3K5T, FSTEL6KT, FSTEL9KT, FSTEL12KT, FSTEL18KT, FSTEL25KT, FSTEL30KT FSTEL35KT models)

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User’s manual 8 ELECTRONIC STABILIZER
Figure 7 – UP: Front side, rear side – DOWN: Front side with open door
(FSTEL50KT, FSTEL55KT, FSTEL60KT, FSTEL75KT, FSTEL100KT, FSTEL120KT models)

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ELECTRONIC STABILIZER 9 User’s manual
4 3 Input/output Terminals
Figure 8 – INPUT/OUTPUT terminals (only Single-Phase models with power 3 5 KVA and higher)
Figure 9 – INPUT/OUTPUT terminals (all Three-Phase models)

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User’s manual 10 ELECTRONIC STABILIZER
5Electrical Installation
The electrical installation has to be done by qualified personnel Follow all the Safety
Standards (CEI Standards in Italy or IEEE elsewhere) for the Input/Output connections
and for the right selection of Input/Output cables
We recommend to use dedicate AC Input/Output power lines for the AVR
For safety we recommend using external circuit breakers between Input mains and AVR
AC Input line and between AVR Output lines and the loads The circuit breakers should
be qualified with leakage current protective function (leakage current < 30 mA)
Before starting the installation procedure, be sure that:
1 The AVR is “OFF” (check the Stabilizer Breaker is in OFF position)
2 The AC Input Voltage for the AVR has been removed
The following table shows the recommended size (cross section) for Input, Output and Ground (GND) wires.
Single-Phase Models
Rated Power (KVA) 1 2/3 5 6 9 12 18 25 30
Input Cable (mm2) 2 5 4 0 6 0 10 0 14 0 18 0 40 0
Output Cable (mm2) 2 5 4 0 6 0 10 0 14 0 18 0 40 0
Ground Cable (mm2) 2 5 4 0 6 0 10 0 14 0 18 0 40 0
Three-Phase Models
Rated Power (KVA) 3 5/6 12 18 25 30 35 50/55 75 100/120
Input Cable (mm2) 2 0 2 5 4 0 6 0 8 0 10 0 14 0 18 0 40 0
Output Cable (mm2) 2 0 2 5 4 0 6 0 8 0 10 0 14 0 18 0 40 0
Ground Cable (mm2) 2 0 2 5 4 0 6 0 8 0 10 0 14 0 18 0 40 0
We recommend using only flexible TRI-RATED cables Otherwise if you use rigid cables,
it will be difficult to move the AVR from initial positioning
We recommend to use dedicate AC Input/Output power Lines for the AVR

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ELECTRONIC STABILIZER 11 User’s manual
5 1 Installation
Connect the GROUND wire first when making wire connection Disconnect the GROUND
wire last when making wire disconnection
Make sure that the wires are connected tightly to the terminals
We advise you to follow the steps below explained:
1 Single Phase models up to 2 5 KVA (see figure 4)
1.1. Connect the output sockets to the load to be supplied.
1.2. Connect the input power cable to the AC line outlet. It is mandatory to ground the AC line outlet
according to the Safety Standards. Carefully check the grounding of AC line outlet.
1.3. Restore the AC Input mains Voltage to the AVR.
2 Single Phase models with power 3 5 KVA and higher (see figures 4 and 8)
2.1. Remove the metallic panel that covers the Input/Output terminals The terminals are shown in figure 8.
All the cables have to reach the terminals from the rear side using the proper holes in the metallic panel.
2.2. Connect the AC INPUT line (LINE, NEUTRAL and GROUND), paying attention to the right polarity, in
accordance with figure 8, as explained below:
Connect INPUT GROUND wire to the GROUND terminal.
Connect INPUT LINE wire to the INPUT L terminal.
Connect INPUT NEUTRAL wire to the INPUT N terminal.
2.3. Connect the OUTPUT line (LINE, NEUTRAL and GROUND) as follow:
Connect OUTPUT GROUND wire to the GROUND terminal.
Connect OUTPUT LINE wire to the OUTPUT L terminal.
Connect OUTPUT NEUTRAL wire to the OUTPUT N terminal.
2.4. Reassemble the metallic panel that gives access to the Input/Output terminals.
2.5. Restore the AC Input mains Voltage to the AVR.
3 Three Phase models (see figures 6, 7 and 9)
3.1. Remove the metallic panel that covers the Input/Output terminals. The terminals are shown in figure .
All the cables have to reach the terminals from the rear side using the proper holes in the metallic panel.
In power models above 50KVA the terminals are behind the front door.
3.2. Connect the AC INPUT line (R PHASE, S PHASE, T PHASE, NEUTRAL and GROUND), paying attention to
the right polarity, in accordance with figure , as explained below:
Connect GROUND wire to the GROUND terminal.
Connect R PHASE wire to the INPUT R terminal.
Connect S PHASE wire to the INPUT S terminal.
Connect T Phase wire to the INPUT T terminal.
Connect NEUTRAL wire to the INPUT N terminal.
3.3. Connect the AC OUTPUT line (R PHASE, S PHASE, T PHASE, NEUTRAL and GROUND), paying attention to
the right polarity, in accordance with figure , as explained below:
Connect GROUND wire to the GROUND terminal.
Connect R PHASE wire to the OUTPUT R terminal.
Connect S PHASE wire to the OUTPUT S terminal.
Connect T PHASE wire to the OUTPUT T terminal.
Connect NEUTRAL wire to the OUTPUT N terminal.

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User’s manual 12 ELECTRONIC STABILIZER
3.4. Reassemble the metallic panel that gives access to the Input/Output terminals.
3.5. Restore the AC Input mains Voltage to the AVR.
It is compulsory to ground the AVR according to the Safety Standards
The case of the AVR is internally connected to the ground terminal (GND) of the IN/OUT
terminals, in order to guarantee safety to the user To guarantee safety it is necessary
to be sure that the local electric plant is supplied with GROUND (in compliance with the
Safety Standards), and that a valid connection is guaranteed between the GROUND of
the AVR and the GROUND of the local electric plant
Any interruption of the GROUND conductor is absolutely prohibited
We recommend to use dedicate AC Input/Output power Lines for the AVR
Risk of electric shock at the Output lines while the unit is connected to the AC utility
line
Risk of electric shock: do not remove the cover The AVR contains internal parts which
are at a high Voltage and are potentially dangerous, capable of causing injury or death
by electric shock
There are no internal parts in the AVR which are user serviceable Any repair or
maintenance work must be performed exclusively by qualified technical personnel
authorized by TECNOWARE TECNOWARE declines any responsibility if this warning is
disregarded
Disregard for these warnings may lead to a risk of electric shock to operators
6Functioning
6 1 Turning ON and OFF
All models have a main breaker called Stabilizer.
Let’s see carefully the consequences of the switching of Stabilizer breaker.
When the breaker is moved to the ON position, the AVR performs a test of about 5 seconds during which the Delay
led (#1 figure 2) blinks and an intermittent acoustic alarm is output at the same time.
Then the AVR begins to work as a Stabilizer: the Output line is activated and all connected devices turn on.
Please check the following points:
1 The Normal led (#2 figure 2) is ON.
2 The Output load level on display is less than 100%: the Overload Protection led (#10 figure 2) must be OFF;
otherwise it is necessary to remove part of the loads at the Output line.
3 The AVR gives no indication of alarm or anomaly.
When the breaker is moved to the OFF position, the AVR stops to work as a stabilizer and switches off
immediately: the Output line is deactivated and all connected devices turn off.

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ELECTRONIC STABILIZER 13 User’s manual
6 2 Load Control
The AVR indicates the Output Load percentage by the display (# figure 2) on the front side.
When the Output load is higher than nominal value the AVR warns of Overload condition as follow explained:
•the Overload Protection led (#10 figure 2) is ON.
•a continuous acoustic alarm is ON.
The AVR has the capability to accept an Overload less than 125% for 30 seconds and then the AVR turns off.
If the Overload exceeds 125%, the AVR switches off immediately.
To turn on again the AVR after an overload shutdown, follow the steps below explained:
1 Disconnect the output loads that cause the Overload condition.
2 Move the Stabilizer breaker to the OFF position.
3 Move the Stabilizer breaker to the ON position.
Make sure that the AVR never indicates Overload condition
Do not connect a load greater than rated value to the AVR (see POWER specifications in
the chapter “Technical Characteristics”), as this may damage the unit In this case the
warranty is void
6 3 Manual Bypass
Manual Bypass can only be activated on the following models:
•Single-Phase: all models except FSTEL1K2M, FSTEL2K5M, FSTEL3K5M, FSTEL6KM models.
•Three-Phase: all models.
There is another breaker called Bypass on the left of the Stabilizer breaker.
To enable Manual Bypass, the following steps must be taken:
1 Move the Stabilizer breaker to the OFF position.
2 Slide the metal lock on the Bypass breaker to the Stabilizer position.
3 Move the Bypass breaker to the ON position.
In Bypass mode, the AVR doesn’t work as a Stabilizer, but only as a Bypass between
Input and Output power lines
To disable Manual Bypass and return to the normal operation of the AVR, follow the steps below explained:
1 Move the Bypass breaker to the OFF position.
2 Slide the metal lock on the Stabilizer breaker to the Bypass position.
3 Move the Stabilizer breaker to the ON position.

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User’s manual 14 ELECTRONIC STABILIZER
7Technical Characteristics
Phase AVR Model Input Voltage Output Voltage Frequency Output Power
Single-
Phase
FSTEL1K2M
150-290 Vac 230±3% 50/60 Hz
1 2 KVA
FSTEL2K5M 2 5 KVA
FSTEL3K5M 3 5 KVA
FSTEL6KM 6 KVA
FSTEL9KM 9 KVA
FSTEL12KM 12 KVA
FSTEL18KM 18 KVA
FSTEL25KM 25 KVA
FSTEL35KM 184-276 Vac 35 KVA
Three-
Phase
FSTEL3K5T
260-500 Vac
400±3% 50/60 Hz
3 5 KVA
FSTEL6KT 6 KVA
FSTEL9KT 9 KVA
FSTEL12KT 12 KVA
FSTEL18KT 18 KVA
FSTEL25KT 25 KVA
FSTEL30KT 30 KVA
FSTEL35KT 35 KVA
FSTEL50KT 50 KVA
FSTEL55KT 55 KVA
FSTEL60KT 60 KVA
FSTEL75KT 75 KVA
FSTEL100KT 319-478 Vac 100 KVA
FSTEL120KT 120 KVA
Phase Three-Phase Single-Phase
Low Voltage 332±7 Vac 1 2±4 Vac
Over Voltage 445±7 Vac 257±4 Vac
Over Temperature If the temperature is high, the unit will shut down and alarm.
Phase missing YES n. a.
Delay Time 5 seconds
Manual Bypass YES YES (*)
Overload Capability (100÷125)% for 30 sec with acoustic alarm; > 125% for 100 ms
Cooling Fan Cooling
Efficiency 8%
Noise ≤40 dB
Temperature -5°C to 40°C
Humidity 20% to 0%
Technical data may change without prior notice
(*) except FSTEL1K2M, FSTEL2K5M, FSTEL3K5M, FSTEL6KM models

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ELECTRONIC STABILIZER 15 User’s manual
7 1 Load Curve
Figure 10 – Load Curve
(on the right: load curve for FSTEL35KM, FSTEL100KT, FSTEL120KT models);
on the left : Load Curve for all other models)
The Stabilizer can deliver maximum power only if the input voltage is greater than 180 Vac.
For voltages below 180 Vac the power decreases linearly with the input voltage as shown in Figure 10.
8Maintenance
8 1 AVR Cleaning
Before starting any cleaning operation, be sure that:
1 The Stabilizer breaker is “OFF”
2 The AC Input Voltage for the AVR has been removed
Use only a cloth dampened with water to clean the unit.
If AVR works in an environmental unusually dusty or dirty, remove the dirty from the ventilation holes.
Before restarting the AVR be sure it is completely dry. If any liquid gets inside the AVR, do not start the unit and
contact Technical Service immediately.
8 2 Operator Safety
Whenever the AVR is not responding anymore to original characteristics, the AVR must be made non-operative and
every usage not authorised must be avoided. After it will be necessary to refer to qualified technical personnel.
Original safety characteristics might not be if, for example, the AVR has visible damage or irregular operation.

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User’s manual 16 ELECTRONIC STABILIZER
9Service
For any malfunction in operation or failure please contact the Technical Service and provide the following
information:
Model and serial number of the AVR, which can be found on the nameplate on the rear of the AVR.
Description of abnormal operation and alarm displayed on display.
Risk of electric shock: do not remove the cover The AVR contains internal parts which
are at a high Voltage and are potentially dangerous, capable of causing injury or death
by electric shock
There are no internal parts in the AVR which are user serviceable Any repair or
maintenance work must be performed exclusively by qualified technical personnel
authorized by TECNOWARE
TECNOWARE declines any responsibility if this warning is disregarded
For any malfunction in operation or failure please contact:
TECNOWARE SERVICE
www tecnoware com
Conformity to the European Directives
TECNOWARE S.r.l. confirms that ELECTRIC STABILIZER models comply ith the requirements set out in: the Lo Voltage
(Safety) Directive 2014/35/EU and follo ing amendments, the EMC (Electro-Magnetic Compatibility) Directive 2014/30/EU and
follo ing amendments.
Product Disposal
ELECTRIC STABILIZER cannot be disposed as an urban aste, but must be treated as a separate aste.
Any violation is indictable ith financial sanctions as per in force regulations.
An incorrect aste disposal or an improper use of the same or of any parts can be damaging for the
environment and for human health.
A correct aste disposal of products having the dustbin symbol marked by a cross help to avoid
negative consequences to the environment and to human health.