LINETRAXX® VMD420
- 三相交流系统 0...500 V的欠电压、过电压和频率监视
- 可选各种监视功能< U, > U, < f, > f
- 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
多功能VMD420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。
- 特征
- 应用
- 附件
- 订货信息
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- Undervoltage, overvoltage and frequency monitoring in 3(N)AC systems 0…500 V
- Asymmetry, phase failure and phase sequence monitoring
- Different monitoring functions selectable
< U, > U, < f, > f - Start-up delay, response delay, delay on release
- Adjustable switching hysteresis
- r.m.s. value measurement (AC)
- Digital measured value display via multi-functional LC display
- Preset function (automatic assignment 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)
- Indication of the system frequency
- RoHS-compliant
- Monitoring of voltage-sensitive machines and electrical installations
- Switching on and switching 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
- Transformer protection, asymmetrical load can be recognized
可选配件 LINETRAXX® VMD420
| Type | Art No. |
|---|---|
| Mounting clip for screw fixing (1 piece per device) | B98060008 |
版本 LINETRAXX® VMD420
| Type | Supply voltage US* | Nominal system voltage Un* | Art. No.** |
|---|---|---|---|
| VMD420-D-1 | AC 16…72 V / DC 9,6…94 V, 15…460 Hz | 3(N)AC 0…500 V / 288 V 15…460 Hz | B73010005 B93010005 |
| VMD420-D-2 | AC/DC 70…300 V, 15…460 Hz | 3(N)AC 0…500 V / 288 V, 15…460 Hz | B73010006 B93010006 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
**(B7… = push-wire terminal / B9… = screw-type terminal)
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