1. はじめに
The VOLTCRAFT VC121 PV Solar Energy Meter is a portable device designed for testing and evaluating solar panel performance. It measures key electrical parameters to help users assess the efficiency and functionality of photovoltaic systems. This meter supports a maximum power test of up to 800 W and features a large, backlit display that shows multiple measurement results simultaneously for clear readability.
Key features include automatic and manual measurement modes, an automatic backlight, and a Data Hold function for convenient evaluation. The device is equipped with MC4 solar panel connectors and an unlocking tool kit for easy integration into solar setups. It also provides warnings for overload and overheating conditions to ensure safe operation.
Figure 1: The VOLTCRAFT VC121 PV Solar Energy Meter shown with its included MC4 connectors and test leads, ready for connection to a solar panel. The meter's display is visible, showing various measurement parameters.
2. セットアップ
2.1. バッテリーの取り付け
- デバイスの電源がオフになっていることを確認し、テストリードをすべて取り外します。
- メーターの背面にある電池ボックスを見つけます。
- 電池カバーを慎重に開けます。 WARNING: To avoid electrical shock, remove test leads before opening the case.
- Insert a 9V (6F22) battery, observing the correct polarity (+/-).
- 電池カバーをしっかりと閉じてください。
図2：背面 view of the VOLTCRAFT VC121 PV meter, showing the battery compartment cover and a warning label regarding electrical shock and opening the case.
2.2. Connecting to Solar Panels
- Ensure the solar panel is not generating power or is disconnected from any load.
- Connect the positive (+) MC4 connector from the solar panel to the positive input terminal on the meter.
- Connect the negative (-) MC4 connector from the solar panel to the negative input terminal on the meter.
- Ensure all connections are secure before proceeding with measurements.
3. 操作手順
図3: 前面のクローズアップ view of the VOLTCRAFT VC121 PV meter, highlighting the display with various measurement parameters (Pmax, Vmp, Imp, Voc, Isc) and control buttons (HOLD, POWER, AUTO/MANUAL).
3.1.電源のオン/オフ
- を押す 力 メーターをオンにするボタン。
- を押し続けます 力 button to turn the meter off.
3.2. Measurement Modes (Auto/Manual)
- The meter supports both automatic and manual measurement modes.
- を押す AUTO / MANUAL button to switch between modes. The display will indicate the currently active mode.
- In 自動モード, the meter will continuously measure and update readings.
- In 手動モード, measurements are initiated by the user. The recommended test interval in Manual Mode is at least 30 seconds between measurements to ensure accurate readings and prevent overheating.
3.3. ディスプレイの読み方
The large, backlit display shows the following parameters:
- Pmax: Maximum Power (in Watts)
- VMP： 巻tage at Maximum Power (in Volts)
- インプ: Current at Maximum Power (in Amperes）
- Voc： オープンサーキットVol。tage (ボルト)
- Isc： Short Circuit Current (in Amperes）
3.4. データホールド機能
- を押す 所有 button to freeze the current readings on the display. This is useful for recording stable measurements.
- を押す 所有 button again to release the hold and resume live measurements.
3.5. Overload and Overheat Warnings
The meter is equipped with safety features to protect the device and the user:
- 過負荷警告: If the input power exceeds the maximum capacity (800 W), an "Overload!" message will appear on the display. Disconnect the solar panel immediately to prevent damage.
- 過熱警告： If the internal temperature of the device becomes too high, an overheat warning will be displayed. Allow the meter to cool down before resuming operation.
4. メンテナンス
4.1. 清掃
- Ensure the meter is powered off and disconnected from all solar panels and test leads before cleaning.
- 装置の外側を柔らかい布で拭きます。amp 布で拭いてください。研磨剤や溶剤は使用しないでください。
- Avoid getting moisture into the input terminals or any openings.
4.2. バッテリーの交換
When the battery indicator on the display shows low power, replace the 9V battery as described in the "Battery Installation" section (2.1). Always use a fresh 9V (6F22) battery.
4.3. ストレージ
- メーターを長期間保管する場合は、液漏れを防ぐために電池を取り外してください。
- デバイスは直射日光や極端な温度を避け、涼しく乾燥した場所に保管してください。
5。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| メーターの電源が入りません。 |
|
|
| "Overload!" message displayed. |
|
|
| Overheat warning displayed. |
|
|
| 不正確または不安定な読み取り。 |
|
|
6. 仕様
| ブランド | VOLTCRAFT |
| モデル番号 | VC121 PV (VC-16003655) |
| Maximum Power Test | 最大800W |
| 最大巻tage | 最大60V |
| 寸法（長さ×幅×高さ） | 4 x 7.6 x 15.7 cm |
| 重さ | 246グラム |
| 電池のタイプ | 9V (6F22) battery (included) |
| 画面 | 大型のバックライト付きディスプレイ |
| コネクタ | MC4 solar panel connectors |
| 安全機能 | Overload and overheat warnings |
| ASIN | B0DZS8NPBN |
| Date of Availability | 26年2025月XNUMX日 |
図4：側面 view of the VOLTCRAFT VC121 PV meter, demonstrating its integrated kickstand for convenient view操作中に。
7.保証とサポート
7.1. 保証情報
Specific warranty details for the VOLTCRAFT VC121 PV Solar Energy Meter are not provided within this manual. Please refer to the manufacturer's official web包括的な保証条件については、当社のサイトまたは購入店にお問い合わせください。
7.2. テクニカルサポート
For technical assistance, troubleshooting beyond the scope of this manual, or inquiries regarding spare parts, please contact VOLTCRAFT customer support directly. Contact information can typically be found on the VOLTCRAFT official webサイトまたは製品パッケージに記載されています。
