Echipamente Electrice
S.C. ELECTROTEHNICA Echipamente Electrice S.R.L.
Adresa: B-dul Timisoara nr.104A, Sector 6
061334, Bucureti, Romania
CUI: RO21794966; J40/9994/2007
Cont: RO62BREL0001070049870101 LIBRA BANK sector 6
Telefon: +4031.425.1226; Fax: +4031.425.1222
E-mail: office@electrotehnica.ro
 DC/AC INVERTER
In:220VDC 
Out: 230VAC (2.25kVA)
KEY FEATURES
1/4 x 19
, 2U
Excellent overall efficiency and high regulation speed 
"Hot plug-in" design with backplane connection 
High power density
CAN-Bus interface
 
 Ability for parallel operation   
 Temperature-controlled fan cooling
 
Redundant synchronization bus 
         
Excellent sinusoidal output 
Input over/under voltage shutdown, overload and short circuit-proof
 PRODUCT  DESCRIPTION
The  inverter    includes  the  newest  switching  technology  with  digital  control.  Due  to  this  fact  a
dramatic reduction of volume and weight was achieved.
With  a  state-of-the-art  control  solution  it  provides  an  excellent  functionality  and  several  protection
features.
The inverter is able to run in parallel operation mode to increase the reliability of the AC system without
any  additional  options.  Additional  modules  can  be  integrated  in  wired  slots  during  normal  system
operation. For higher reliability the hard wired synchronization bus between paralleled inverters is working
in a redundant mode.
Up to 4 inverters can be installed in a 19"-subrack with only 2U. The module is prepared to operate with the
new static switches series to increase the system availability furthermore.
APPLICATIONS
Inverter module for AC power supply facilities with or without battery in all areas of industry,
power generation and power distribution.
TEHNICAL DATA
Nominal input voltage  216VDC 
Nominal input current  9.2ADC @ 216VDC 
Input frequency range  DC 
Input voltage range  183.6-270VDC 
Inrush current  nominal input current 
Overall efficiency  90% 
Internal input fusing  No; external fusing required (16A) 
Nominal output voltage 
230VAC 0.5%, adjustment range: 200-242VAC; parallel
mode: 230VAC 5% 
Nominal output current  9.8AAC @ cos phi=0.8; 7.8AAC @ cos phi=1 (resistive power) 
Nominal output power  1800W/2250VA @ cos phi=0.8 
Overload capability  130% for 5 sec, 110% for 1 min 
Output frequency  50Hz 0.01Hz 
Synchronization range  48-52Hz/58-62Hz (60Hz optional) 
Static regulating deviation  0.5% 
Dynamic accuracy of the
output voltage 
<3% Vnom at load variations between 10%-90%-10% Inom;
regulation time 0.3ms 
Short circuit protection  Continuous short circuit proof; 3x Inom for 2.5 sec 
Parallel operation 
Yes; current sharing 10% Inom; slope down output voltage
line 
THD/Crest factor  2% at linear load/3 
Power factor range  0.5 ind. - 1 - 0.5 cap. 
External output fuse  10A gL or MCB characteristic B 
LED signalling  Operation (green), Vo OK (green), Alarm (red) 
Main processor  16Bit Fujitsu 
Electronic protection 
Input under voltage, input over voltage, over temperature,
overload and short circuit protection 
External synchronization 
Parallel operation; no fixed master; redundant synchronization
bus; external synchronization by static transfer switch 
Isolated signalling contacts  General fault; relay contact NO; 60V/0.1A 
Communications interface  CAN-Bus, proprietary protocol 
Ambient temperature 
Operation: -20C to +55C (power derating 2%/K above +40C);
storage: -40C to +85C 
Cooling  Fan cooling (temperature-regulated; monitored) 
Climatic conditions  according to IEC 721-3-3 class 3K3/3Z1/3B1/3C2/3S2/3M2 
Max. installation altitude   1500m 
Audible noise  <45dBA 
Type of construction  19subrack 2U 
Dimensions (W/H/D)  106.4/88.4/335mm 
Weight  approx. 4.0kg 
Type of enclosure / Protection
class 
IP20 (front panel) / 1 
Colour (front panel)  RAL 7035, black imprint 
CE conformity  yes 
Compliance to safety
standards 
EN60950-1; VDE0100 T410; VDE0110; EN50178; EN60146 
Compliance to EMC standards 
EN55011/22 class B; EN61000-4 T2-5 
Connections  DC input, AC output and signalization: DIN41612-M connector 
S.C. ELECTROTEHNICA Echipamente Electrice S.R.L.
Adresa: Bdul. Timisoara nr.104A, Sector 6
061334, Bucureti, Romania
Telefon: +4031.425.1226; Fax: +4031.425.1222;
E-mail: office@electrotehnica.ro
www.electrotehnica.ro
DC/AC Inverter 3kV
IN:100VDC
OUT: 230VAC (3.3kVA)
Description
The  inverter family represents a high frequency DC to AC power conversion technology in 19" compatible racks.
Suitable for any low to medium modular AC power system these inverters are ideal for applications
in telecommunication, industry and railroad power supplies.
Combining high frequency conversion with galvanic isolation between input and output, inverter is a flexible, efficient
and reliable AC power source. The possibility of parallel connection offers highest flexibility for
realizing systems with increased output power and/or (n+1)-redundancy.
The inverter is designed to operate together with the static switch and supervisory module. Remote control and
communication is performed via CAN interface. Alternatively the units can be operated in
stand-alone mode.
Key Features
>> 19", 3U
>> Wide range DC input
>> "Hot-Plug-In" systems
>> High power density
>> CAN-Bus interface
>> Ability for parallel operation
>> Digital displays to notify all relevant parameters
>> Temperature-controlled fan cooling
>> Input over/under voltage shutdown, overload and short circuit-proof
Technical Data 
Nominal input voltage                                                108VDC
Nominal input current                                                 26.7ADC
Input frequency range                                                 DC  
Input voltage range                                                     +20/-15%  
Inrush current                                                              nominal current  
Overall efficiency                                                        90%  
Internal input fusing                                                    MCB 1 pole  
Nominal output voltage                                              230VAC 0.5%, sinusoidal  
Nominal output current                                               14.35A  
Nominal output power                                                3300VA (cos phi= 0,8)  
Overload capability                                                    130% for 30 seconds
Output frequency                                                        50 or 60Hz programmable  
Synchronization range                                                45 65Hz  
Accuracy                                                                    0.5% static  
Recovery time                                                            < 0.3 ms at load transients 10%- 90%- 10%
Short circuit protection                                               Continuous short circuit proof, 3 x Inom for app. 2.5 sec.
Parallel operation                                                       Max. 10 pieces, load sharing app. 5% Inom
THD/Crest factor                                                        2% at linear load/ 3  
2/2
Power factor range                                                   0.5 ind. - 1 - 0.5 cap.  
LED signalling                                                          Standby, Vout, Vin>, Vin<, overload, overtemperature, general fault
Electronic protection                                                 Mechanically coupled input and output MCB, input undervoltage 
                                                                                 shut down, input overvoltage shut down, overtemperature shut       
                                                                                 down, overload / short circuit shut down                            
External synchronization                                          Parallel operation and three-phase systems without additional 
                                                                                 components or specified master
Remote signals                                                        Relay contact General Fault  
Digital display                                                           2 x 3 digits, output voltage; output current; frequency, input 
                                                                                 voltage, input current, temperature, effective power, reactive     
                                                                                 power, cos phi 
Microprocessor control                                             Programmable monitoring and protection for all system
Communication                                                        CAN-Bus interface for communication with static bypass switch 
Ambient temperature Operation:                             -20C to +55C, storage: -40C to +85C
Climatic conditions                                                  IEC 721-3-3 class 3K3/3Z1/3B1/3C2/3S2/3M2
Max. installation altitude                                          1500m  
Audible noise                                                           45dB (A) at 1 m distance  
Construction                                                            19, 3U, rear side connectors
Dimensions (W/H/D)                                                483/133/360mm  
Weight                                                                     approx. 27kg  
Minimum installation depth                                      440mm ex. 19 frame  
Cooling                                                                    Speed-controlled fan with overtemperature monitoring
Type of enclosure / Protection class                        IP20 (mech.); 1 acc. to EN 60950 (electr.)
Surfaces                                                                   Front panel:powder coating RAL 7035, black imprint; constructive  
                                                                                 parts: anodized meta
Compliance to safety standards                               EN 60950-1, VDE 0100 part 410, VDE 0110, EN 50178, EN 60146
Compliance to EMC standards/CE conformity         EN 55011, EN 55022 class B, EN 61000 4 part 2 5 /yes
S.C. ELECTROTEHNICA Echipamente Electrice S.R.L.
Adresa: Bdul. Timisoara nr.104A, Sector 6
061334, Bucureti, Romania
CUI: RO21794966; J40/9994/2007;
Cont: RO58 RNCB 0073 0857 5490 0001 BCR sector 2
Telefon: +4031.425.1226; Fax: +4031.425.1222;
E-mail: office@electrotehnica.ro
DC/AC Inverter 
IN: 220VDC
OUT: 230VAC (5.0kVA)
Description
The  inverter  family  (1kVA5kVA)  is  equipped  with  a  50Hz  isolation  transformer  following  a  primary  side  pulse-width
modulation stage and is available as 19-compatible rack or wall mounted cabinet.
These  inverters  are  especially  suited  for  applications  in  power  plants,  industrial,  railroad  and  shipping  AC  power
supplies up to 40kVA output power.
The  combination  of  rugged  mechanical  construction,  high  overload  ability  and  electrical  isolation  between  input  and
output offers a very high flexibility in system configuration.
The inverters can be operated as single unit or in parallel connection (optionally) to provide power increase or further
improved reliability by (n+1)- redundancy.
Operation with a static bypass switch is also possible.
Applications
Inverter module for AC power supply facilities in all areas of industry, power generation and power distribution.
Especially for heavy duty loads with high inrush currents.
Key Features
  19, 5U
  Wall cabinet version available
  Hot plug-in system (19)
  Very high overload ability
  Ability for parallel operation (optional)
  Analogue measurement instruments (Vout, Iout)
  Temperature-controlled fan cooling
  Input over/under voltage shutdown, overload and short circuit-proof
2/2
Technical Data 
Nominal input voltage 216VDC
Nominal input current 20.0ADC
Input frequency range DC
Input voltage range +20/-15%
Inrush current    nominal current
Overall efficiency   91%
Internal input fusing No; (external fusing required (25A)
Nominal output voltage 230VAC 0.5%, sinusoidal
Nominal output current 21,8A
Nominal output power 5000VA (cos phi= 0,8)
Overload capability 160% for 1min, 130% for 10min, without shut down
Output frequency 50Hz0,05%
Synchronization range 49,550,5Hz
Accuracy 0.5% static  
Recovery time <0.3 ms at load transients 10%- 90%- 10%
Short circuit protection Continuous short circuit proof, 22,5 x Inom for app. 2.5 sec.
Parallel operation Max. 12 pieces, load sharing app. 5% Inom, with external
parallel operation chokes
THD    3% for linear load
Crest factor 2,5
Power factor range 0 ind. - 1 - 0 cap.  
External output fusing 25A
LED signaling Standby, Vout, Vin>, Vin<, overload, overtemperature, general
fault
Electronic protection input undervoltage shut down, input overvoltage shut down,
overtemperatur shut down, output voltage OK, overload
without shut down, short circuit shut down
External synchronization yes
Remote signals Relay contact General Fault
Analog Measurement Instruments Iout, Vout
Ambient temperature Operation: -20C to +55C; Storage: -40C to +85C
Climatic conditions IEC 721-3-3 class 3K3/3Z1/3B1/3C2/3S2/3M2
Max. installation altitude   1500m
Audible noise   45dB (A) at 1 m distance
Construction 19, 5U, rear side connectors
Dimensions (W/H/D) 483/221/460mm
Weight approx. 52kg
Cooling Speed-controlled fan with overtemperature monitoring
Type of enclosure / Protection class IP20 (mech.); 1 acc. to EN 60950 (electr.)
Surfaces Front panel:powder coating RAL 7035, black imprint;
constructive parts: anodized metal
CE conformity yes
Compliance to safety standards EN 60950-1, VDE 0100 part 410, VDE 0110, EN 50178, EN
60146
Compliance to EMC standards EN 55011, EN 55022 class B, EN 61000 4 part 2 5