1. Pengenalan
The MCR SINOTIMER SVP-915A is an advanced adjustable voltage protector designed to safeguard electrical appliances and systems from voltage fluctuations and overcurrent conditions. It features an LCD display for real-time monitoring of voltage, current, and power consumption (KWH). This device integrates over-voltage, bawah-voltage, and overload protection functions, automatically disconnecting the power supply when abnormal conditions are detected and reconnecting when safe levels are restored. It is suitable for DIN rail mounting in various electrical distribution systems.
2. Maklumat Keselamatan
Please read this manual carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or damage to the device and connected equipment.
- Pemasangan Profesional Disyorkan: Installation should only be performed by a qualified electrician or competent person.
- Pemutusan Kuasa: Always ensure the main power supply is disconnected before installing, wiring, or performing any maintenance on the device.
- Pendawaian yang betul: Follow the wiring diagram precisely. Incorrect wiring can cause damage or malfunction.
- Persekitaran Operasi: Do not install the device in environments with excessive moisture, dust, corrosive gases, or high temperatures.
- Kapasiti Muatan: Do not exceed the maximum rated current and voltage peranti.
- Pembumian: Ensure proper grounding of the electrical system.
3. Produk Lebihview
The SINOTIMER SVP-915A is a compact and versatile protection device. Its main components and features include:
- Paparan LCD: Menunjukkan vol masa nyatatage (U), current (A), and accumulated power consumption (KWH).
- Butang Kawalan: "SET" button for entering settings mode, and "Up" / "Down" arrow buttons for adjusting parameters.
- Terminal Input/Output: Clearly marked 'IN' (Input) and 'OUT' (Output) terminals for Live (L) and Neutral (N) connections.
- Pemasangan Rel DIN: Designed for easy installation on standard 35mm DIN rails.
- Fungsi Perlindungan:
- Lebih-voltage perlindungan (OVP)
- Di bawah voltage perlindungan (UVP)
- Perlindungan arus lebih tinggi (OCP)
- Automatic re-connection after fault clearance

Rajah 3.1: Depan view of the SINOTIMER SVP-915A, showing the LCD screen and control buttons.

Rajah 3.2: Bersudut view of the device, showing the 'IN' and 'OUT' terminals.
4. Persediaan dan Pemasangan
Before proceeding with installation, ensure all safety precautions are observed, especially disconnecting the main power supply.
4.1. Pemasangan Rel DIN
- Locate an appropriate 35mm DIN rail within your electrical panel.
- Align the device's mounting clip with the DIN rail.
- Press the device firmly onto the rail until it clicks into place. Ensure it is securely fastened.

Rajah 4.1: Bawah view illustrating the DIN rail mounting mechanism.
4.2. Sambungan Pendawaian
Refer to the wiring diagram below for correct connection. The device is designed for single-phase systems.

Figure 4.2: Wiring Diagram for SINOTIMER SVP-915A.
- Input (IN): Connect the incoming Live (L) and Neutral (N) wires from your power source (e.g., main breaker or power switch) to the 'IN' terminals of the SVP-915A.
- Keluaran (KELUAR): Connect the outgoing Live (L) and Neutral (N) wires to your load (e.g., distribution panel or appliances) from the 'OUT' terminals of the SVP-915A.
- Pastikan semua sambungan adalah ketat dan selamat untuk mengelakkan sentuhan longgar dan terlalu panas.
4.3. Permulaan Kuasa
After verifying all connections, restore power to the circuit. The device's LCD display should illuminate, showing the current voltage. The device will perform a self-test and then enter normal operating mode.
5. Arahan Operasi
5.1. Mod Paparan
The LCD continuously displays the current voltage (U). Pressing the "Up" or "Down" buttons briefly will cycle through other display parameters:
- Voltage (U): Voltan talian semasatage dalam Volt (V).
- Semasa (A): Current load in Amperes (A).
- Kuasa (W): Real-time power consumption in Watts (W).
- Energy (KWH): Accumulated power consumption in Kilowatt-hours (KWH).
5.2. Adjusting Protection Parameters
To enter the settings mode and adjust protection thresholds:
- Press and hold the "SET" button for approximately 3-5 seconds until the display starts flashing, indicating entry into settings mode.
- Use the "SET" button to cycle through the adjustable parameters:
- Lebih-voltage protection threshold (UVP): Set the maximum allowable voltage.
- Di bawah voltage protection threshold (OVP): Set the minimum allowable voltage.
- Over-current protection threshold (OCP): Set the maximum allowable current.
- Reconnection delay time: Time before the device reconnects after a fault.
- While a parameter is flashing, use the "Up" and "Down" arrow buttons to adjust its value.
- After setting all desired parameters, press and hold the "SET" button again for 3-5 seconds, or wait for 10 seconds without any button press, to save the settings and exit the settings mode.
5.3. Resetting KWH
To reset the accumulated KWH reading, enter the settings mode, navigate to the KWH display, and then press and hold both "Up" and "Down" buttons simultaneously until the KWH value resets to zero.
6. Penyelenggaraan
The SINOTIMER SVP-915A is designed for minimal maintenance. However, periodic checks can ensure optimal performance and longevity.
- Pembersihan: Gently wipe the device with a dry, soft cloth to remove dust. Do not use liquid cleaners or abrasive materials.
- Semakan Sambungan: Periodically inspect wiring connections to ensure they remain tight and free from corrosion. (Ensure power is disconnected before inspection).
- Keadaan Persekitaran: Ensure the operating environment remains within specified limits (temperature, humidity).
7. Penyelesaian masalah
If you encounter issues with your SVP-915A, refer to the following common problems and solutions:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| No display / Device not powering on | No input power; Incorrect wiring; Device fault. | Check main power supply. Verify input wiring (L and N). If power is present and wiring is correct, the device may be faulty. |
| Peranti kerap tersandung | Lebih-voltage, bawah-voltage, or over-current condition; Protection thresholds set too low/high. | Check actual line voltage and load current. Adjust protection thresholds if necessary (refer to Section 5.2). Reduce load if over-current is detected. |
| Bacaan yang salah pada paparan | Wiring error; Device calibration issue. | Verify wiring connections. If readings are consistently inaccurate, the device may require service. |
| Device does not reconnect after fault | Fault condition still present; Reconnection delay too long; Device fault. | Ensure the fault condition (over/under voltage, over current) has cleared. Check reconnection delay setting. If the fault has cleared and delay passed, device may be faulty. |
Jika masalah berterusan selepas mencuba penyelesaian ini, sila hubungi sokongan pelanggan.
8. Spesifikasi
Key technical specifications for the MCR SINOTIMER SVP-915A:
- model: SVP-915A
- Jenama: MCR (Manufacturer: SINOTIMER)
- Dinilai Voltage: 110V / 120V AC
- Nilai Semasa: 63A (Boleh Laras)
- Lebih-voltage Protection Range: Boleh laras
- Di bawah voltage Protection Range: Boleh laras
- Over-current Protection Range: Boleh laras
- paparan: LCD (Voltage, Current, KWH)
- Pemasangan: Rel DIN 35mm
- ASIN: B08C7NL296
- Nombor Bahagian: SVP915A-1
8.1. Dimensi

Rajah 8.1: Dimensi peranti.
- Ketinggian: Kira-kira 85mm
- Lebar: Kira-kira 36mm
- Kedalaman: Approximately 65mm (including DIN rail clip)
9. Waranti dan Sokongan
For warranty information and technical support, please refer to the purchase documentation or contact your retailer. Keep your purchase receipt as proof of purchase.
For further assistance, you may also contact the manufacturer, SINOTIMER, through their official channels.