mSVR Series
Servo Electronic
Voltage Stabilisers / Power Line Conditioners
Single Phase
1 to 15 kVA
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mSVR Series - Single-Phase
Voltage Stabilisers / Power Line Conditioners
The Mini SVR Series of Single-Phase AC Automatic Voltage Stabiliser / Conditioners are designed to provide a clean and regulated power supply, thereby ensuring reliable protection against the vagaries of the utility mains supply.
Models are available in 7 different power ratings:
1 kVA (1kW), 2 kVA (2kW), 3 kVA (3kW), 5 kVA (5kW), 7.5 kVA (7.5kW), 10 kVA (10kW) and 15kVA (15kW).
By steplessly boosting low voltages and reducing down high voltages, they ensure a stable output voltage. In addition, Mini SVR Series Voltage Stabilisers safeguard against all too common everyday transient voltages and spikes – typically introduced into the mains supply by nearby disturbances resulting from peak power demands or stop/start operation of electrical machinery.
Suitable for all electronic and electrical load types models are available for situations where the incoming mains utility supply is between 165V to 265V (H Models) and, 90V to 140V (L Models).
To learn more about the range of Single-Phase mSVR Voltage Stabilisers available from Sinalda UK, please check out the following listings, or download the brochure below:




















UPDATE: Now with extended range coverage to 15 kVA
Standard Features include:
![]() | Cost-Efficient Microprocessor Controlled Step-Less Voltage Stabilization / Regulation |
![]() | Servo Electronic Digitally Enhanced Design |
![]() | Brownout and Over / Under Voltage Protection |
![]() | Wide Permissible Input Voltage Window |
![]() | TVSS – Transient Voltage Surge & Spike Suppression Protection |
![]() | Basic Electrical Noise Protection |
![]() | Class II SPD – Lightning Surge Arrestor |
![]() | Restart Time Delay to Limit Nuisance Tripping & Protect Sensitive Load Equipment from Damage |
![]() | Servo Electronic Digitally Enhanced Design with User Selectable Response Times, Restart Time Delay, Output Voltage & Accuracy |
![]() | Comprehensive Front Display Panel Display with – Input & Output Voltage Digital Metering – Output Current Digital Metering – Full LED Status Indication |
![]() | User Selectable Operating Parameters (via the Display Panel) – Output Voltage & Accuracy – Over & Under Voltage Levels – Overload – Speed of Correction – Restart Time Delay |
![]() | Input Circuit Breaker / Switch |
![]() | Manual Bypass Switch (with interlocking) |
![]() | Hard Wire Input & Output (IEC 320 Plug N Play ≤2 kVA) |
![]() | RS/232 Interface |
![]() | Built to comply with leading International Standards |
![]() | Supplied with a 2 Year / 24 Months Warranty |
Optional Features available include:
![]() | 19” Rack Mountable Enclosure (-RM) |
![]() | IP54 / NEMA 3 Style Outdoor Enclosure (-IP54) |
Selection Table:
Note:
All mSVR Stabilisers/Conditioners are designed to support the full load at minimum input volts and maximum ambient temperature.
Selection Table:
Note:
All mSVR Stabiliser/Conditioners are designed to support the full load at minimum input volts and maximum ambient temperature.
LED STATUS INDICATORS & ALARMS | ||
![]() | Normal | All is working fine |
![]() | Time Delay | Delay in the supply of power to the output on start-up and re-engagement of the output after an irregular event Display Metering will show a count-down to the re-engagement of the output |
![]() | High Voltage | Output voltage exceeds the selected over-voltage level. The output will be automatically disconnected. On fault clearance, the output will be automatically re-engaged |
![]() | Low Voltage | Output voltage exceeds the selected under-voltage level. The output will be automatically disconnected. On fault clearance, the output will be automatically re-engaged |
![]() | Overload | The actual current drawn on the input supply exceeds the models stated maximum input current rating. LED will indicate an overload condition for 60 seconds and then the output will be automatically disconnected. On fault clearance, the system will require a manual restart |
![]() | Menu | Password-protected access for setting the Stabiliser/Conditioner’s 7 user-definable system parameters (with menu navigation buttons). User-adjustable parameters are- 1. Output Voltage 2. Output Voltage Accuracy 3. Output Under-Voltage Level 4. Output Over-Voltage Level 5. Input Overload level 6. Speed of Response 7. Time Delay |
DIGITAL METERING | ||
![]() | Input Volt Meter | The voltage level of the incoming utility mains supply |
![]() | Output Volt Meter | The Output voltage delivered by the system |
![]() | Load Ammeter | The power drawn by the connected load and stabiliser |
General Technical Specification
General: | ||
– Design Topology: | Servo Electronic – Variable Transformer controlled | |
– Phase: | Single Phase, 2 Wire (L+N+GE) | |
– Model Nos: | H Series | mSVR-1H to mSVR-15H ( 1 to 15 kVA) |
L Series | mSVR-1L to mSVR-5L (1 to 5 kVA) | |
– Power Ratings: | 7 Model Ratings- 1 kVA, 2 kVA, 3kVA, 5kVA, 7.5kVA, 10kVA , & 15kVA | |
– Frequency: | 50 / 60Hz (35 to 63Hz) | |
– Power Factor: | The Power Factor has no effect on performance providing the stabilizer is being used within its rated capacity | |
Input: | ||
– Nominal Voltage: | H Series | 220V – 230V – 240V, Single Phase, 2 Wire (L+N+GE) |
L Series | 110V – 120V – 127V, Single Phase, 2 Wire (L+N+GE) | |
– Input Voltage Window | H Series | 165V to 265V, Single Phase, 2 Wire (L+N+GE) |
L Series | 90V to 140V, Single Phase, 2 Wire (L+N+GE) | |
Output: | ||
– Voltage: | H Series | 220V – 230V – 240V (Selectable), Single Phase, 2 Wire (L+N+GE) |
L Series | 110V – 120V – 127V (Selectable), Single Phase, 2 Wire (L+N+GE) | |
– Voltage Accuracy: | ±1 to 2% (Default) – adjustable ±1% to ±5% | |
– Response Time: | Typically a 10% supply variation will be corrected to within 2.5% in 0.6 seconds | |
– Efficiency: | ≥98% | |
Metering, Alerts & Communication: | ||
– Metering: | Input Volts, Output Volts, and Load | |
– Alarms / Indicators: | Restart Delay, Normal, Irregular, Low Volt, High Volt & Overload | |
– User Selectable Operating Parameters (via the Display Panel) | Output Voltage | H Series – 230V (Default) – adjustable 220V to 240V L Series – 120V (Default) – adjustable 110V to 127V |
Output Voltage Accuracy | ±1 to 2% (Default) – adjustable ±1% to ±5% | |
Overload | On the Input | |
Speed of Correction | 4 selectable speeds | |
Over Voltage Level | On the Output | |
Under Voltage Level | On the Output | |
Restart Time Delay | 5 seconds (Default) – adjustable 1 to 999 seconds | |
– Interface | RS-232 – DB9 Pin Style Port | |
Protection Features: | ||
– Input Breaker & Manual Bypass: | Standard on all models (with interlocking) | |
– Over/ Under Voltage | Display Indication with the automatic disconnection of the output | |
– Short-Circuit: | Automatic tripping of the input circuit breaker/switch | |
– Loss of Supply | Auto-restart on the return of the utility mains supply | |
– Restart Time Delay: | Default 5 seconds (adjustable 1 to 999 seconds) – to prevent nuisance tripping and protect sensitive equipment against damage. Count down displayed on the Display Front Panel. | |
– Surge Protection: | TVSS – Protects loads against high-energy Spikes and Transient Voltages | |
– Lightning Surge Protection: | Class II SPD | |
– Noise Filtering: | LC Filter delivering Common Mode and Differential Mode Attenuation of 50dB at 100kHz | |
– Overload Protection: | Display Indication with the automatic disconnection of the output | |
– Overload Ratings: | Operational Overload Settings are set via the Digital Display Panel, with electro-mechanical overload ratings standing at 10 x Max. Current for 100 milliseconds 2.5 x Max. Current for 10 seconds 1.5 x Max. Current for 1 minute | |
Environmental: | ||
– Operating Temperature Range: | -0°C to +45°C Derate by 2% for each additional °C up to max 60°C | |
– Maximum Altitude: | 1000 meters (derate by 2.5% per additional 500 meters) | |
– Relative Humidity: | Suitable for indoor tropical use – 0 to 95% (non-condensing) | |
Physical: | ||
– Power Connections: | 1 & 2 kVA models | IEC320 Input & Output Connectors |
All other models | Hardwire Input & Output (with rear and bottom cable entry) | |
– Construction: | IP20 / NEMA 1 Style – BS EN 60529 | |
– Paint Colour: | RAL 1013 (Oyster White – Epoxy Powder Coating) | |
– Dimensions & Weights: | See relevant model Selection Tables (above) | |
Certification & Conformance: | ||
– EMC Conformance: | BS EN 55022 and relevant parts of BS EN 61000 | |
– CE Certification: | CE Marked – 2014/30/EU (The EMC Directive) and 2014/35/EU (The Low Voltage Directive) | |
– Warranty: | 2 Years / 24 Months from date of supply | |
Optional Add-Ons: | ||
– Rack-Mountable (-RM) | 19” Rack Mountable Enclosure (mSVR-1H to 7.5H and 1L to 3L Models only) | |
– Outdoor IP54 Enclosure (-IP54) | Outdoor IP54 / NEMA 3 style free-standing steel cubicles suitable for external use, or more challenging internal environments |
Note:
All mSVR Stabilisers/Conditioners are designed to support the full load at minimum input volts and maximum ambient temperature.
Sales & Support
![]() | mSVR General Data Sheet Individual Model Info Sheets |
![]() | Guide Specification |
![]() | Operator / User Manual |
CE & UKCA Certification
mSVR Series Single-Phase Servo Electronic AC Voltage Stabilisers / Power Line Conditioners comply with the relevant European Union – and corresponding UK – health, safety, and environmental protection directives and regulations and are duly CE / UKCA marked.
Sinalda UK Declaration
![]() | EMC Directive – 2014/30/EU – in force from April 2016 and corresponding UK regulations |
Independent 3rd Party Verification Certificate
![]() | EMC Directive – 2014/30/EU – in force from April 2016 Low Voltage Directive – 2014/35/EU – in force from April 2016 |
If you do not find the Voltage Stabiliser or Power Line Conditioner that meets your application’s exact needs, please contact us with your specific detailed requirements.