{"id":11967,"date":"2026-02-03T22:47:27","date_gmt":"2026-02-03T21:47:27","guid":{"rendered":"https:\/\/www.kfactor.it\/shop\/uncategorized\/stabilizzatori-di-tensione-elettromeccanici-trifase-da-10kva-a-2500kva-vsa3\/"},"modified":"2026-06-24T18:49:41","modified_gmt":"2026-06-24T16:49:41","slug":"vsa3-three-phase-electromechanical-voltage-stabilizers-from-10-5kva-to-2500kva","status":"publish","type":"product","link":"https:\/\/www.kfactor.it\/en\/shop\/voltage-stabilizers\/three-phase-voltage-stabilizers\/vsa3-three-phase-electromechanical-voltage-stabilizers-from-10-5kva-to-2500kva\/","title":{"rendered":"VSA3 – THREE-PHASE ELECTROMECHANICAL VOLTAGE STABILIZERS FROM 10.5KVA TO 3000KVA"},"content":{"rendered":"VSA3 – THREE-PHASE ELECTROMECHANICAL VOLTAGE STABILIZERS FROM 10.5KVA TO 3000KVA<\/h3>\n
Electromechanical voltage stabilizers use a variable toroidal transformer, a BUCK-BOOST transformer, and an electronic circuit that controls the rotation of the variable transformer, thus regulating the output voltage. With the control system, in a very fast response time, the high-torque regulation motor regulates small voltage changes very quickly. The servomotor is put out of service by the limit switches when it is outside its operating limits and by the control circuit when the output voltage is automatically adjusted to the set value. When the regulation is complete, the motor’s energy is cut with the help of an electronic opening circuit, operating in complete silence.<\/p>\n
Regulation occurs independently on each phase.<\/strong> The system is equipped with a bypass switch that allows the load to be powered with mains voltage in the event of a malfunction or need. Using the setting buttons you can adjust the and high-low voltage limits. It is then possible to adjust the maximum current control and the relative hysteresis time. A display shows the input and output voltage, and the current delivered, on each phase<\/p>\nThe new VSA3 stabilizers offer features such as:<\/strong><\/p>\n\n- Protection from voltages that are not adequate for the users.<\/strong><\/li>\n
- Protection of user and device from excessive currents.<\/strong><\/li>\n
- Pure sinus voltage regulation.<\/strong><\/li>\n
- Long-term overload protection and instant protection.<\/strong><\/li>\n
- AC voltage balancing with extreme precision.<\/strong><\/li>\n
- It runs smoothly on all loads from 0% to 100%.<\/strong><\/li>\n
- Manual change to bypass mode without adjustment.<\/strong><\/li>\n
- Displays all values \u200b\u200bin the bypass regime.<\/strong><\/li>\n
- Records input voltage and load current limits.<\/strong><\/li>\n
- Static, non-gradual, dynamically corrected output voltage.<\/strong><\/li>\n
- When protections are activated, it records the number of protection trips and the reason for each trip.<\/strong><\/li>\n
- Standard regulation is \u00b11% (396V -404V) stable when input voltage is within range<\/strong><\/li>\n<\/ul>\n
ATTENTION: THIS PRODUCT HAS NOT BEEN TESTED FOR OPERATION IN SYSTEMS WHERE THE PRESENCE OF PHOTOVOLTAIC SYSTEMS RESULTS IN CURRENT FLOWING FROM THE OUTPUT TO THE INPUT OF THE STABILIZER (BIDIRECTIONAL OPERATION).<\/strong><\/p>\nONLY THE RANGE OF ELECTRONIC PRODUCTS (IMP) IS TESTED FOR BIDIRECTIONAL OPERATION.<\/strong><\/p>\nTHREE PHASE ELECTROMECHANICAL VOLTAGE STABILIZERS – <\/strong>REGULATION PRINCIPLE<\/strong><\/p>\n![\"schema](\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2017\/05\/sch-vsrt.jpg\")
<\/p>\n
\n\n\nCODE VSA3<\/strong>XXX<\/strong><\/td>\n010<\/strong><\/td>\n015<\/strong><\/td>\n022<\/strong><\/td>\n030<\/strong><\/td>\n045<\/strong><\/td>\n060<\/strong><\/td>\n075<\/strong><\/td>\n100<\/strong><\/td>\n120<\/strong><\/td>\n150<\/strong><\/td>\n<\/tr>\n\n| Power KVA<\/td>\n | 10.5<\/td>\n | 15<\/td>\n | 22.5<\/td>\n | 30<\/td>\n | 45<\/td>\n | 60<\/td>\n | 75<\/td>\n | 100<\/td>\n | 120<\/td>\n | 150<\/td>\n<\/tr>\n | \n| INPUT<\/td>\n<\/tr>\n | \n| Input voltage<\/td>\n | 400Vac 3ph + N<\/td>\n<\/tr>\n | \n| Voltage range<\/td>\n | -25%+15% (300Vac ~ 460Vac) [other ranges available on request, like 190-415 and 310-485]<\/td>\n<\/tr>\n | \n| Input frequency<\/td>\n | 47 : 64 Hz<\/td>\n<\/tr>\n | \n| OUTPUT<\/td>\n<\/tr>\n | \n| Output voltage<\/td>\n | 400Vac (adjustable 380:415V)<\/td>\n<\/tr>\n | \n| Output accuracy<\/td>\n | \u00b1 1%<\/td>\n<\/tr>\n | \n| Output current A<\/td>\n | 15<\/td>\n | 21<\/td>\n | 32<\/td>\n | 43<\/td>\n | 65<\/td>\n | 86<\/td>\n | 108<\/td>\n | 144<\/td>\n | 173<\/td>\n | 217<\/td>\n<\/tr>\n | \n| Overload capacity<\/td>\n | 200% carico 10\u201d \/ 150% carico per 2\u2019<\/td>\n<\/tr>\n | \n| Output frequency<\/td>\n | 47 : 64 Hz (same as input frequency)<\/td>\n<\/tr>\n | \n| Regulation Speed<\/td>\n | 90V \/ sec<\/td>\n<\/tr>\n | \n| Efficiency<\/td>\n | min. 97%<\/td>\n<\/tr>\n | \n| Load max unbalance<\/td>\n | 100%<\/td>\n<\/tr>\n | \n| Display<\/td>\n | digital meter with output current\/phase and line voltage reading, power<\/p>\n input digital v-meters<\/td>\n<\/tr>\n | \n| PROTECTIONS<\/td>\n<\/tr>\n | \n| Input protections<\/td>\n | Automatic circuit breaker<\/td>\n<\/tr>\n | \n| Output protections<\/td>\n | Short circuit, overload, low load, high-low voltage, high-low frequency, phase sequence failure by output contactor<\/td>\n<\/tr>\n | \n| By-Pass<\/td>\n | Manual By-pass included<\/td>\n<\/tr>\n | \n| MCB output<\/td>\n | Optional<\/td>\n<\/tr>\n | \n| MCB input<\/td>\n | Included<\/td>\n<\/tr>\n | \n| OTHER DATA<\/td>\n<\/tr>\n | \n| Cooling<\/td>\n | Forced cooling by thermostat<\/td>\n<\/tr>\n | \n| Protection class<\/td>\n | IP20 (higher protections available on request)<\/td>\n<\/tr>\n | \n| Max ambient temp.<\/td>\n | -10\u00b0 C ~ +40\u00b0 C<\/td>\n<\/tr>\n | \n| Altitude<\/td>\n | 1000 m<\/td>\n<\/tr>\n | \n| Relative humidity<\/td>\n | 95% (without condensation)<\/td>\n<\/tr>\n | \n| Acoustic pressure<\/td>\n | < 50dB<\/td>\n<\/tr>\n | \n| Colour<\/td>\n | RAL7035<\/td>\n<\/tr>\n | \n| Dimensions WxDxH cm<\/td>\n | 40x63x116<\/td>\n | 40x63x127<\/td>\n | 60x88x139<\/td>\n | 66x94x165<\/td>\n | 120x84x185<\/td>\n<\/tr>\n | \n| Weight kg.<\/td>\n | 115<\/td>\n | 125<\/td>\n | 140<\/td>\n | 165<\/td>\n | 228<\/td>\n | 285<\/td>\n | 345<\/td>\n | 410<\/td>\n | 450<\/td>\n | 575<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n \n\n\nCODE VSA3<\/strong>XXX<\/strong><\/td>\n200<\/strong><\/td>\n250<\/strong><\/td>\n300<\/strong><\/td>\n400<\/strong><\/td>\n500<\/strong><\/td>\n600<\/strong><\/td>\n800<\/strong><\/td>\n1000<\/strong><\/td>\n1250<\/strong><\/td>\n1600<\/strong><\/td>\n2000<\/strong><\/td>\n2500<\/strong><\/td>\n<\/tr>\n\n| Power KVA<\/td>\n | 200<\/td>\n | 250<\/td>\n | 300<\/td>\n | 400<\/td>\n | 500<\/td>\n | 600<\/td>\n | 800<\/td>\n | 1000<\/td>\n | 1250<\/td>\n | 1600<\/td>\n | 2000<\/td>\n | 2500<\/td>\n<\/tr>\n | \n| INPUT<\/td>\n<\/tr>\n | \n| Input voltage<\/td>\n | 400Vac 3ph + N<\/td>\n<\/tr>\n | \n| Voltage range<\/td>\n | -25%+15% (300Vac ~ 460Vac) [other ranges available on request, like 190-415 and 310-485]<\/td>\n<\/tr>\n | \n| Input frequency<\/td>\n | 47 : 64 Hz<\/td>\n<\/tr>\n | \n| OUTPUT<\/td>\n<\/tr>\n | \n| Output voltage<\/td>\n | 400Vac (adjustable 380:415V)<\/td>\n<\/tr>\n | \n| Output accuracy<\/td>\n | \u00b1 1%<\/td>\n<\/tr>\n | \n| Output current A<\/td>\n | 289<\/td>\n | 362<\/td>\n | 434<\/td>\n | 578<\/td>\n | 724<\/td>\n | 869<\/td>\n | 1159<\/td>\n | 1449<\/td>\n | 1816<\/td>\n | 2318<\/td>\n | 2898<\/td>\n | 3623<\/td>\n<\/tr>\n | \n| Overload capacity<\/td>\n | 200% load 10\u201d<\/td>\n<\/tr>\n | \n| Output frequency<\/td>\n | 47 : 64 Hz (as input frequency)<\/td>\n<\/tr>\n | \n| Regulation Speed<\/td>\n | 90V \/ sec<\/td>\n<\/tr>\n | \n| Efficiency<\/td>\n | min. 97%<\/td>\n<\/tr>\n | \n| Load max unbalance<\/td>\n | 100%<\/td>\n<\/tr>\n | \n| Display<\/td>\n | digital meter with output current\/phase and line voltage reading, power<\/p>\n input digital v-meters<\/td>\n<\/tr>\n | \n| PROTECTIONS<\/td>\n<\/tr>\n | \n| Input protections<\/td>\n | Input circuit breaker, mains lamps, Emergency power off<\/td>\n<\/tr>\n | \n| Output protections<\/td>\n | Short circuit, overload, low load, high-low voltage, high-low frequency, phase sequence failure by output contactor<\/td>\n<\/tr>\n | \n| By-Pass<\/td>\n | Manual By-pass included by change-over switch<\/td>\n<\/tr>\n | \n| MCB output<\/td>\n | Optional<\/td>\n<\/tr>\n | \n| MCB input<\/td>\n | Optional<\/td>\n<\/tr>\n | \n| OTHER DATA<\/td>\n<\/tr>\n | \n| Cooling<\/td>\n | Forced cooling by thermostat<\/td>\n<\/tr>\n | \n| Protection class<\/td>\n | IP20 (higher protections available on request)<\/td>\n<\/tr>\n | \n| Max ambient temp.<\/td>\n | -10\u00b0 C ~ +40\u00b0 C<\/td>\n<\/tr>\n | \n| Altitude<\/td>\n | 1000 m<\/td>\n<\/tr>\n | \n| Relative humidity<\/td>\n | 95% (without condensation)<\/td>\n<\/tr>\n | \n| Acoustic pressure<\/td>\n | < 50dB<\/td>\n<\/tr>\n | \n| Colour<\/td>\n | RAL7035<\/td>\n<\/tr>\n | \n| Dimensioni LxPxH cm<\/td>\n | 120x84x185<\/td>\n | 175x84x185<\/td>\n | 180X124X175<\/td>\n | 180X124X210<\/td>\n | 210X214X185<\/td>\n | T.B.A.<\/td>\n<\/tr>\n | \n| Peso kg.<\/td>\n | 585<\/td>\n | 610<\/td>\n | 1200<\/td>\n | 1350<\/td>\n | 1795<\/td>\n | 2700<\/td>\n | 1200<\/td>\n | 1350<\/td>\n | 1795<\/td>\n | 2700<\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":" VSA3 – THREE-PHASE ELECTROMECHANICAL VOLTAGE STABILIZERS FROM 10.5KVA TO 3000KVA Electromechanical voltage stabilizers use a variable toroidal transformer, a BUCK-BOOST transformer, and an electronic circuit that controls the rotation of the variable transformer, thus regulating the output voltage. With the control system, in a very fast response time, the high-torque regulation motor regulates small voltage […]<\/p>\n","protected":false},"featured_media":12185,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[223],"product_tag":[680,678,679,682,306,327,677],"class_list":["post-11967","product","type-product","status-publish","has-post-thumbnail","product_cat-three-phase-voltage-stabilizers","product_tag-electromechanical-stabilizers-2","product_tag-line-conditioners-2","product_tag-stabilizers","product_tag-stabilizzatori-tensione-en-2","product_tag-three-phase-stabilizers","product_tag-three-phase","product_tag-voltage-drop-2","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author","","first","instock","taxable","shipping-taxable","product-type-variable"],"acf":[],"yoast_head":"\n VSA3 - THREE-PHASE ELECTROMECHANICAL VOLTAGE STABILIZERS FROM 10.5KVA TO 3000KVA - K-factor<\/title>\n<meta name=\"description\" content=\"Three-phase electromechanical voltage stabilizers with independent phase regulation. 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