一、簡介
The Haofy SVP-912 40A Voltage Protector Relay is an advanced device designed to protect electrical equipment from damage caused by voltage fluctuations. It provides comprehensive overvoltage 和 undervoltage protection, along with real-time voltage display. This manual provides detailed instructions for the installation, operation, and maintenance of your SVP-912 relay.
主要特點包括：
- 過音量tage和Undervoltag電子保護
- 實時音量tag電子顯示器
- Adjustable Overvoltage和Undervoltage Thresholds and Recovery Values
- Adjustable Action and Recovery Delay Times
- Reset Mode Selection
- Fault Query Function
- 出廠重置選項
2. 安全訊息
安裝或操作本設備前，請務必閱讀並瞭解所有安全說明。不遵守這些說明可能會導致觸電、火災或嚴重人身傷害。
- 安裝只能由合格人員執行。
- Ensure power is disconnected before any installation or wiring work.
- Verify correct wiring connections (Input/Output, Neutral/Live) to prevent damage to the device or connected equipment.
- 請勿在潮濕或乾燥的環境下操作設備amp 狀況。
- Do not exceed the specified rated current (40A) or voltage（120VAC）。
3. 產品結束view
The SVP-912 features a compact design for DIN rail mounting, with a clear digital display and intuitive control buttons for easy configuration.
圖 3.1：正面 view of the Haofy SVP-912 Voltage Protector Relay, showing the digital display, 'SET' button, up/down adjustment buttons, and input/output terminals.
成分：
- 數字顯示： 顯示即時音量tage and setting parameters.
- 設置按鈕： Enters and confirms setting modes.
- 向上/向下按鈕： Adjust parameter values.
- IN Terminals (N, L): 電源輸入。
- OUT Terminals (N, L): Protected power output.
- 指示燈： Over (V) for overvoltage, Under (V) for undervoltage.
4. 設定與安裝
The SVP-912 is designed for easy installation on a standard DIN rail.
4.1 安裝
- Ensure the main power supply is turned off before mounting.
- Attach the SVP-912 to a standard 35mm DIN rail by clipping it into place.
- 確保設備牢固固定。
4.2 接線圖
Connect the input and output wires as shown in the diagram below. Pay close attention to the Neutral (N) and Live (L) connections.
Figure 4.1: Wiring diagram and dimensions of the SVP-912 Voltage Protector Relay, indicating input (IN) and output (OUT) terminals for Neutral (N) and Live (L) connections.
- Connect the incoming power supply (120VAC) to the IN (N) 和 IN (L) 終端。
- Connect the load (equipment to be protected) to the OUT (N) 和 OUT (L) 終端。
- Double-check all connections for tightness and correctness before restoring power.
5. 操作說明
After successful installation and power-on, the device will display the current voltage. You can adjust various protection parameters using the control buttons.
5.1 Power-On Delay
Upon initial power-on or after a power interruption, the device will delay outputting power to the load for a set duration (default 2 seconds) to stabilize the voltage. This delay is adjustable.
5.2 參數設置
若要進入設定模式，請按住 放 button for approximately 3 seconds. Use the Up 和 向下 按鈕用於調整數值，然後按下 放 briefly to confirm and move to the next parameter.
- 過音量tage Value (Uvo): Adjustable from 130V to 150V or OFF. Default: 140V.
- 過音量tage Recovery Value (Uvr): Adjustable from 129V to 149V. This is the voltage at which the device will restore power after an overvoltage 事件。
- 過音量tage Action Time (Uvt): Adjustable from 0.1s to 10s. Default: 0.1s. This is the delay before the device cuts power during an overvoltage 事件。
- 欠卷tage Value (Uve): Adjustable from 100V to 80V or OFF. Default: 90V.
- 欠卷tage Recovery Value (Uer): Adjustable from 81V to 99V. Default: 95V. This is the voltage at which the device will restore power after an undervoltage 事件。
- 欠卷tage Action Time (Uet): Adjustable from 0.1s to 10s. Default: 0.1s. This is the delay before the device cuts power during an undervoltage 事件。
- Failure Recovery Delay Time (Frt): Adjustable from 2s to 512s. Default: 60s. This is the delay before the device attempts to restore power after any protection trip.
- Power-On Delay Time (Pot): Adjustable from 2s to 255s. Default: 2s. This is the initial delay before power output after the device is powered on.
- Reset Mode Selection (Rst): Allows selection of automatic or manual reset after a fault.
- Fault Query (Flt): Displays the last fault code or condition.
- Factory Reset (Fac): Resets all parameters to their default values.
After adjusting all desired parameters, press and hold the 放 button again for 3 seconds to save the settings and exit the setting mode.
6、維護保養
The Haofy SVP-912 Voltage Protector Relay requires minimal maintenance. Regular inspection and cleaning can help ensure its longevity and reliable operation.
- 打掃： Periodically wipe the device with a dry, soft cloth to remove dust and debris. Do not use liquid cleaners or solvents.
- 檢查： Regularly check wiring connections to ensure they are secure and free from corrosion. Inspect the device for any signs of physical damage or overheating.
- 環境： Ensure the operating environment remains within the specified temperature and humidity ranges to prevent malfunction.
7。 故障排除
If you encounter issues with your SVP-912, refer to the following troubleshooting guide:
| 問題 | 可能的原因 | 解決方案 |
|---|---|---|
| 設備未開機。 | No input power; incorrect wiring. | Check main power supply. Verify input wiring (N and L terminals). |
| Output power is off, but voltage 是正常的。 | Device in protection mode (over/undervoltage); recovery delay active. | Check indicator lights (Over/Under). Wait for recovery delay to complete. Check fault query (Flt) for recent events. |
| 無法更改設定。 | Not in setting mode; buttons not pressed correctly. | Press and hold SET button for 3 seconds to enter setting mode. Ensure brief presses for navigation and long press to save/exit. |
| Frequent tripping. | 卷tage fluctuations are common; protection thresholds are too sensitive. | 調整超容tage/下卷tage thresholds to be less sensitive, or increase action time delays. Consult an electrician if fluctuations are severe. |
8. 規格
| 模型： | SVP-912 |
| 額定容量tage: | 120VAC 50 / 60Hz |
| 額定電流： | 40A |
| 過音量tage Value Range: | 130V-150V-OFF (Default: 140V) |
| 過音量tage Recovery Value: | 129V-149V |
| 過音量tage Action Time: | 0.1-10s（默認：0.1s） |
| 欠卷tage Value Range: | 100V-80V-OFF (Default: 90V) |
| 欠卷tage Recovery Value: | 81V-99V（默認：95V） |
| 欠卷tage Action Time: | 0.1-10s（默認：0.1s） |
| Failure Recovery Delay Time: | 2-512s（默認：60s） |
| Delay Time after Power-On: | 2-255s（默認：2s） |
| 耗電量： | ≤2W |
| Electrical Machinery Life: | ≥4000次 |
| 尺寸： | 尺寸約為 81 x 36 x 60 毫米（3.2 x 1.4 x 2.4 英吋） |
| 安裝： | DIN導軌 |
| 工作環境溫度： | -25℃至+40℃ |
| 濕度： | <90% |
| 高度： | ≤2000m（6561.7英尺） |
9. 保固和支持
如需了解保固資訊和技術支持，請直接聯絡賣家或製造商。請保留購買收據作為購買憑證。
You can visit the official Haofy store for more product information and support: Haofy Store on Amazon.
