コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
The two models are physically installation-compatible, but there are critical differences in power supply type and functional configuration. Adjustments shall be made according to system requirements: confirm the voltage range for the self-powered design; communication functions are fully compatible; display performance and measurement accuracy are upgraded. The main limitation is no auxiliary power supply support.
- In-depth Model Segment Definition Comparison
| モデル | セグメント | 意味 | 主な違い |
| WM12-96.AV5.3.3.S | WM12-96 | 96×96mm panel-mounted three-phase indicator with built-in keypad | Old series, LEDディスプレイ, auxiliary power supply design |
| AV5 | Measuring range: 380/660V L-L / 5(6)そしてAC | Same measuring range | |
| 3 | 3-phase system for unbalanced load | Same system type | |
| 3 | 18–60VDC auxiliary power supply | DC auxiliary power supply | |
| S | With RS485 communication | Same communication function | |
| WM1596AV53XoSX | WM1596 | 96×96mm panel-mounted three-phase power analyzer | New series, 液晶ディスプレイ, self-powered design |
| AV5 | Measuring range: 380/660V L-L / 5(6)そしてAC | Same measuring range | |
| 3 | 3-phase system for unbalanced load | Same system type | |
| Xo | Self-powered (no auxiliary power required) | No external power supply needed | |
| S | With RS485 communication | Same communication function | |
| × | No pulse / 警報出力 | No additional output functions |
- Core Parameter Compatibility Comparison
| パラメータのカテゴリ | WM12-96AV5.3.3.S | WM1596AV53XoSX | 互換性 | 備考 |
| 物理的な設置 | 96×96mm panel, cutout 92×92mm | 96×96mm panel, cutout 92×92mm | ✅ Fully Compatible | Direct interchangeable installation, no panel modification required |
| Display Type | 3×3-digit LED, 14mm digit height | Graphic LCD with higher readability | ✅ Function Upgrade | Richer display content, supports Chinese interface |
| 測定精度 | 電圧/電流: ±0.5% FS | 電圧/電流: ±0.5% RDG | ✅ Accuracy Improved | Meets higher metering requirements |
| 力: ±(1% FS + 1 Digit) | Active Energy: クラス 1 | |||
| Power Supply Type | 18–60VDC auxiliary power | Self-powered (120–240V L-N / 208–415V L-L) | ❌ Incompatible | No external power needed, but system voltage must be within the range |
| コミュニケーション | RS485, Modbus RTU, 9600bps | RS485, Modbus RTU, 9600/19200bps | ✅ Compatible | Communication parameters configurable for matching |
| Measurement Functions | Basic electrical parameters, maximum value indication | 基本パラメータ + Voltage/Current THD, bi-directional energy measurement | ✅ Function Expanded | Added harmonic analysis for comprehensive monitoring |
| 侵入保護 | フロントIP65, Terminal IP20 | Front IP51, Terminal IP20 | ⚠️ Slightly Reduced | No impact for indoor use; extra protection required for outdoor/dusty environments |
| 動作温度 | -10°C ~ +50°C | -10°C ~ +50°C | ✅ Fully Compatible | Consistent environmental adaptability |
- Replacement Feasibility Matrix
3.1 ✅ Direct Replacement Applicable Scenarios
System voltage matches the self-powered range (120–240V L-N / 208–415V L-L) and no external auxiliary power is required
Harmonic analysis or advanced energy metering functions are needed
Higher display readability is preferred (LCD instead of LED)
New project design where full advantages of WM15 series functions can be utilized
3.2 ⚠️ Replacement After Necessary Adjustments
| System Condition | Adjustment Measure | 注意事項 |
| Original system equipped with 18–60VDC auxiliary power | Keep the power supply wired but unconnected, or remove it to save cost | WM15 self-powered version requires no external auxiliary power |
| System voltage exceeds self-powered range | Select WM15 version with auxiliary power (例えば. WM1596AV53AoSX) | Auxiliary power model supports 208–600V L-L |
| 脈 / alarm output is required | Replace with output-equipped model (例えば. WM1596AV53XoSO) | “○” = 1 リレー出力; “SO” = 2 リレー出力 |
3.3 ❌ Non-Replaceable Scenarios
| Restriction Description |
| System voltage lower than 120V L-N with no available auxiliary power supply |
| DC auxiliary power supply is mandatory (例えば. safety standard requirements) |
| Front panel IP65 protection rating is compulsory (例えば. outdoor or heavy dust environments) |
| Budget limited and only basic display functions required (WM15 is higher in price than WM12) |
- Replacement Implementation Guidelines
4.1 Hardware Installation Steps
- Power off the system, remove the original WM12 unit, keep CT and voltage wiring intact.
- Install WM1596AV53XoSX directly into the existing 96×96mm panel cutout.
- Connect CT (現在) and voltage input wires according to the same terminal definition.
- Do not connect the original DC auxiliary power supply (WM15 is self-powered).
- Wire RS485 communication cable if remote monitoring is required.
4.2 Key Configuration Settings
| Configuration Item | Setting Path | 推奨値 |
| Communication Parameters | Menu → SETTINGS → COMMUNICATION | 住所: 1–247, ボーレート: 9600bps, 8N1 |
| システムタイプ | Menu → SETTINGS → SYSTEM → WIRING | 3P4W (3-phase 4-wire) or 3P3W (3-phase 3-wire) |
| 表示モード | Menu → SETTINGS → DISPLAY | Cyclic display of voltage, 現在, 力, 頻度 |
| Harmonic Measurement | Menu → SETTINGS → MEASUREMENT → THD | Enable (default activated) |
4.3 Official Replacement Recommendation
Carlo Gavazzi officially defines the WM15 series as the final replacement for the WM12 series, featuring:
Higher measurement accuracy (クラス 1 活性エネルギー)
Enhanced functions: 高調波解析, bi-directional energy metering
Longer product lifecycle and technical support
Compatible with UCS configuration software for batch parameter setup
- Replacement Decision Guide
- Is system voltage within 120–240V L-N / 208–415V L-L?
はい: WM1596AV53XoSX can be used directly
いいえ: Choose WM15 model with auxiliary power (例えば. WM1596AV53AoSX)
- Is RS485 communication required?
はい: Select model with suffix S
いいえ: Select model without S (例えば. WM1596AV53XoXX)
- Is pulse / alarm output required?
はい: Select model with suffix O (例えば. WM1596AV53XoSO)
いいえ: Keep the original selected model
