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The 777 unit is a fully-programmable, electronic overload relay designed to protect any motor drawing 2-800 full load A (external CTs are required above 90 A). The 777 (family of products) is used for 3-phase, 200-480 V ac applications, with several specialized units for other voltage ranges and unique applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. Some unique applications include use with a Subtrol* equipped Franklin submersible motor to detect high motor temperatures and applications where a fast linear trip is required.
All of the overload relays provide unsurpassed protection by combining overload, voltage, phase loss and reversal, voltage and current unbalance, power monitoring, and underload based on current - all in one package. 对于独立应用，装置包含一个3位LED显示器，用于编程、提供实时操作信息和显示诊断代码，以帮助排除故障。 The units also feature a communications network port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet*, Profibus, or Ethernet network. 最多可从PC、PLC或SCADA系统远程监控99台装置，并通过带有可选解决方案软件的PC进行数据记录。此功能提供了一种简单、经济的方式来满足弧闪安全的新要求。
*Subtrol and DeviceNet are trademarks of their respective owners.
- 内置显示器
- 可编程电压和电流设置
- 3个可选重启选项
- 3个可编程重启延时器
- 远程显示兼容性
- 灵活复位
- 网络通信能力
- Visual indication for programming, viewing real-time voltage or current, and last fault code
- 可在各种系统上使用
- 可以选择自动、半自动或手动，以最好地满足个别应用需求
- 为快速循环保护、电机冷却和干井恢复的重启延迟时间进行单独编程
- 通过远程显示实时数据，无需打开机柜，有助于遵守弧闪安全法规并提高安全性
- 可以通过继电器上的按钮完成复位，也可以使用可选的777-MRSW或OL-Reset远程复位套件进行远程复位
- Compatible with Modbus, DeviceNet*, Profibus, or Ethernet using optional communications module
777 零件
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筛选
777 应用
- 输送系统
- 暖通空调设备
- 锯和磨床
- 风扇电机
