LINETRAXX® VMD421H
- 三相交流系统 0...500 V的欠电压、过电压和频率监视
- 集成后备电源
- 不对称、相位故障和相序监视
- 可调启动延迟，响应延迟和释放延迟
- 可选各种监视功能 < U, > U, < f, > f
多功能VMD421系列电压监视仪被设计用于监视频率、欠电压、过电压和三相交流系统中两个阈值（窗口鉴别器的功能）之间的电压。电压测量是真实有效值。电流测量值连续显示在液晶屏上。存储报警继电器激活的测量值。由于可调的响应时间，可以考虑特定于设备的特性，如特定于设备的启动过程、短时电压波动等。监视仪需要外部电源电压。
- 三相交流系统 0...500 V的欠电压、过电压和频率监视
- 集成后备电源
- 不对称、相位故障和相序监视
- 可调启动延迟，响应延迟和释放延迟
- 可选各种监视功能 < U, > U, < f, > f
多功能VMD421系列电压监视仪被设计用于监视频率、欠电压、过电压和三相交流系统中两个阈值（窗口鉴别器的功能）之间的电压。电压测量是真实有效值。电流测量值连续显示在液晶屏上。存储报警继电器激活的测量值。由于可调的响应时间，可以考虑特定于设备的特性，如特定于设备的启动过程、短时电压波动等。监视仪需要外部电源电压。
特点
- Undervoltage, overvoltage and frequency monitoring in 3(N)AC systems 70…500/288 V
- Without external supply voltage
- Integrated energy backup
- Asymmetry, phase failure and phase sequence monitoring
- Various monitoring functions selectable < U, > U, < f, > f
- Start-up delay, response delay, delay on release
- Adjustable switching hysteresis
- r.m.s. value measurement (AC+DC)
- Digital measured value display via multi-functional LC display
- Preset function (automatic setting of basic parameters)
- LEDs: Power On, Alarm 1, Alarm 2
- Measured value memory for operating value
- Continuous self monitoring
- Internal test/reset button
- Two separate alarm relays (one changeover contact each)
- N/C or N/O operation and fault memory behaviour selectable
- Password protection for device setting
- Sealable transparent cover
- Two-module enclosure (36 mm)
- Push-wire terminal (two terminals per connection)
- RoHS compliant
应用
- Monitoring of voltage-sensitive machines and electrical installations
- Switching machinery and equipment on and off at a certain voltage level
- Monitoring of stand-by and emergency supply systems
- Supply voltage monitoring of portable loads
- Protection of three-phase motors against phase failure and phase open-circuit
- Transformer protection, asymmetrical load can be recognised
LINETRAXX® VMD421H 变体
| Type | Nominal system voltage Un* | Response value | Art. No.** |
|---|---|---|---|
| VMD421H-D-3 | 3(N)AC 70…500 V, 15…460 Hz | AC 70…500 V | B73010007 B93010007 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
可选的附件，用于 LINETRAXX® VMD421H
| Type | Art. No. |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
下载 LINETRAXX® VMD421H
| 类型 | 命名 | 尺寸 | 语言 | 时间戳 | D-/B-数量 |
|---|---|---|---|---|---|
| 声明书 | UKCA - VMx42x | 141.7 KB | 2022/12/20 06:00:2220.12.2022 06:00:22 | ||
| CE 合格声明 | VMx42x | 93.7 KB | 2022/11/04 09:31:2004.11.2022 09:31:20 | ||
| 手册 | VMD421H | 1.9 MB | DE | 2021/06/21 05:28:1621.06.2021 05:28:16 | D00138 |
| 手册 | VMD421H | 1.9 MB | EN | 2021/06/21 05:34:2121.06.2021 05:34:21 | D00138 |
| 手册 | VMD421H | 798.3 KB | ES | 2019/05/13 10:31:5413.05.2019 10:31:54 | D00138 |
| 技术规格书 | VMD421H | 411.0 KB | DE | 2019/05/13 10:31:3513.05.2019 10:31:35 | D00138 |
| 技术规格书 | VMD421H | 363.3 KB | EN | 2019/05/13 10:31:3613.05.2019 10:31:36 | D00138 |
| 技术规格书 | VMD421H | 322.0 KB | ES | 2019/05/13 10:31:3713.05.2019 10:31:37 | D00138 |
| 技术规格书 | VMD421H | 530.7 KB | ZH | 2019/05/13 10:31:3313.05.2019 10:31:33 | D00138 |
| 快速启动 | VMD421H | 940.6 KB | DE | 2021/06/16 06:59:1916.06.2021 06:59:19 | D00138 |
| 快速启动 | VMD421H | 940.6 KB | EN | 2021/06/16 06:59:1916.06.2021 06:59:19 | D00138 |