工作電流出現大幅度波動可能導致電機、皮帶失效、打滑或機械故障，這可能給用戶的生產過程造成危險。鉗形設計是一種理想的解決方案，因為它能夠輕松夾在現有的電纜或者導線上。這些開關都提供工業標準的135A 或200A 輸出和極低的固定設定點或可調節設置點，當達到規定電流時開關動作。
此款交流電流感應開關，可用于通過穿心電流的感應，隔離交流電流，直流控制交流負荷，如繼電器，路燈，風扇，功率器件和電路的過載，短路保護，電流檢測，電流沖擊保護，電機漏電檢測，廣泛應用于：變電站，變頻調速裝置，逆變裝置，電解電鍍，電力機車，煤礦工作等自動化行業。
Description
The HFW series of AC current switches activate a normally open (NO) contact closure via a solid-state switch whenever the monitored primary circuit current exceeds a pre-set level. Models are available to switch various load types, feature integral LEDs to indicate device power and also the switch status and can be provided in solid or split core configuration. The HFW-Axx models include a multi-turn adjustment to set the trip threshold to the desired value and the HFW-Fxx models operate as a go/no-go status indicators with a factory set minimum threshold value.The switches can monitor up to 200 Amps continuous and feature an auto-rangecircuit to eliminate manual jumpers. All models are UL, CE and RoHS compliant.The HFW series current switches are accurate, reliable, easy to install and require less servicing than differential pressure switches, or flow switches. The HFW series current switches can be used to monitor devices with a maximum continuous operating current of up to 2 0 0 Amps and the power supply is induced from the conductor being monitored. All of these units come with anunconditional 5 year limited warranty. Features- Auto-ranging up to 200A
- Power induced from monitored conductor
- True digital switching and very low leakage
- Small compact size
- Easy field adjustment with status LED’s
- Choice of output rating
- Fixed or adjustable setpoint
- Five Year Warranty
Specification Guide
Power Supply: None !a self-powere
Setpoint: Solid core - 0.5A...200A
Split core - 1.5A...200A
Output Switch: Solid state 0.3A @ 135V ac/dc
1A @ 250Vac
Hysteresis: < 2% FS max.
Response Time: < 200 mS
Enclosure Size: Solid core - 61 x 90 x 25 mm
Split core - 63 x 100 x 32 mm
Conductor Hole Size: Solid core - 19mm diameter
Split core - 22.6 x 22.6 mm
Operating Temperature: ¨C25!aC to + 70 CE, UL and RoHS
上海三廣數碼科技有限公司是專門從事測控技術的公司。代理銷售 恒發科技有限公司生產的霍爾電流傳感器、霍爾電壓傳感器、進口霍爾傳感器、磁調制式直流漏電流傳感器、電流變送器、功率傳感器、電壓變送器、隔離端子經銷進口電流開關(AC current switch)、(current switch)電流感應開關(Current sensing switch)(ac current sensing switch)等廣泛應用于各種電源、電氣傳動、電力系統、電焊機、變頻、鐵路信號及機車、石化、冶金、通信、自動控制、機器人等高科技行業和領域。本公司旗下還有兩個全資子公司，三廣網芮和三廣景芮，主要從事工業設備的維修：DR維修、東芝CT維修、X光機維修、線路板維修、變頻器維修、PLC維修、以及電源維修、伺服維修等等。
