1. Úvod
The SINOTIMER SVP912 is an advanced adjustable voltage surge protector relay designed to safeguard electrical appliances and systems from overvoltage, podpaltage, and overcurrent conditions. This device features a dual LED display for real-time voltage and current monitoring and offers adjustable protection parameters. It is suitable for DIN rail installation in domestic and industrial distribution boxes, providing automatic recovery of power supply once voltage returns to normal operating ranges.

Obrázek 1: Přední strana view of the SINOTIMER SVP912 Adjustable Voltage Protector Relay, showing the LED display and control buttons.
2. Vlastnosti produktu
- Over/Undervoltage ochrana: Automatically disconnects power when voltage exceeds or falls below set thresholds.
- Nadproudová ochrana: Disconnects power if the current draw exceeds the configured limit.
- Automatické obnovení: Restores power supply automatically once the circuit voltage and current return to normal operating parameters after a fault.
- Duální LED displej: Provides real-time display of measured voltage a aktuální.
- Adjustable Protection Values: Přepětítage, podpaltage, overcurrent, and fault recovery delay times are user-adjustable.
- Vizuální indikátory: Dedicated LED indicators (Over(V) and Under(V)) provide immediate visual feedback on protection status.
- Instalace na DIN lištu: Designed for easy mounting within standard distribution boxes.
3. Specifikace
| Specifikace | Hodnota |
|---|---|
| Číslo modelu | SVP912-1-80A DLR |
| Jmenovitý proud | 80 Amps |
| Coil Voltage | 120 voltů (AC) |
| Minimální spínací svtage | 120 voltů (AC) |
| Provozní režim | Automatický |
| Typ montáže | Montáž na lištu DIN |
| Typ konektoru | Šroub |
| Kontaktní materiál | Měď |
| Typ kontaktu | Normálně otevřeno |
| Záruka | 1 rok výrobce |

Figure 2: Dimensional drawing of the SVP912, showing measurements such as 85mm height, 35mm width, and 65mm depth.
4. Instalace a nastavení
The SVP912 is designed for DIN rail mounting. Ensure all power is disconnected before beginning installation to prevent electrical shock.
- Montáž: Securely attach the SVP912 to a standard 35mm DIN rail within your distribution box.
- Zapojení: Connect the incoming power supply (Line 'L' and Neutral 'N') to the 'IN' terminals of the protector. Connect the load (outgoing power) to the 'OUT' terminals. Ensure correct polarity.
- Circuit Breaker Integration: It is recommended to install an appropriate circuit breaker (e.g., an air circuit breaker) upstream of the voltage protector for additional safety and circuit protection.

Figure 3: Wiring diagram illustrating the connection of the SVP912 between a power switch and an air circuit breaker, showing input (IN) and output (OUT) terminals for Line (L) and Neutral (N).
After wiring, double-check all connections for tightness and correctness before restoring power.
5. Provoz
Upon power-up, the SVP912 will display the current voltage and current readings. The device is pre-configured with default protection values, which can be adjusted as needed.
5.1 Displej a indikátory
- The main LED display shows the real-time voltage (V) a proud (A).
- The 'Over(V)' LED illuminates when an overvoltagJe detekován stav.
- The 'Under(V)' LED illuminates when an undervoltagJe detekován stav.

Obrázek 4: Detail view of the SVP912's control panel, highlighting the 'SET' button, adjustment arrows, and LED indicators for Over(V) and Under(V).
5.2 Adjusting Protection Parameters
To adjust the protection values:
- Stiskněte tlačítko SOUBOR button to enter the parameter setting mode. The display will show the first adjustable parameter (e.g., overvoltagtéhož prahu).
- Použijte Nahoru (▲) a Dolů (▼) arrow buttons to increase or decrease the value.
- Stiskněte SOUBOR again to confirm the current parameter and move to the next adjustable parameter (e.g., undervoltage threshold, overcurrent limit, recovery delay time).
- Opakujte kroky 2 a 3 pro všechny požadované parametry.
- After setting the last parameter, the device will automatically save the settings and return to normal operation mode.
Refer to the labels on the device (e.g., Uvo: AC130V-150V, Uve: AC80V-100V, Recovery time: 2-512s) for the default ranges and units of adjustable parameters.
6. Údržba
The SINOTIMER SVP912 is designed for reliable, long-term operation with minimal maintenance. Periodically inspect the device and its connections for any signs of wear, damage, or loose wiring. Ensure the area around the protector is clean and free from dust or debris to maintain proper ventilation.
7. Řešení problémů
Pokud zařízení nefunguje podle očekávání, zvažte následující:
- Žádný displej/Žádné napájení: Check the incoming power supply and ensure all wiring connections are secure. Verify the upstream circuit breaker is not tripped.
- Časté zakopávání: Review přepětí vašeho setutage, podpaltage, and overcurrent thresholds. They might be set too sensitively for your application. Check for actual voltage fluctuations or excessive current draw from connected appliances.
- Device Not Recovering: Ensure the fault condition (over/undervoltage, overcurrent) has genuinely cleared and remained stable for the set recovery delay time.
- Nesprávné čtení: Pokud je zobrazený objemtage or current seems inaccurate, ensure proper wiring and contact a qualified electrician for verification.
For persistent issues, consult a qualified electrician or contact SINOTIMER customer support.
8. Záruka a podpora
The SINOTIMER SVP912 comes with a 1-letá záruka výrobceTato záruka se vztahuje na vady materiálu a zpracování při běžném používání. Uschovejte si prosím doklad o koupi pro případ uplatnění záruky.
For technical support, warranty service, or further inquiries, please contact SINOTIMER directly through their official channels or visit their brand store for more information.
You can find more information about SINOTIMER products and support at the SINOTIMER Store.