Controller module RFO810

¥25,478.00

External connections:
• Excitation current to the load cells
• 2 or 4 analog inputs for load cell signals
• 4 analog outputs, voltage or current
• 8 digital inputs for control signals
• 8 digital outputs
• +24 V supply for external units, max 0.5 A
• Ethernet connection
• Service and multiple control units
• 2 serial interfaces of type RS-232 for
external displays, control, etc.

Model:RFO810

Category: SKU: ABB RFO810 Tag:
Whatsapp：+86 15359293870
WeChat：+86 18106937731
                E-mail：geabbdcs@gmail.com
Contacts：kelly CHEN

Description

Controller module RFO810

Controller module RFO810

Phase-to-phase current variation takes the current samples as input and it calculates the variation using the sampling value based algorithm. Phase-to-phase current variation function is major one to fulfill the objectives of the startup element. Zero sequence criterion takes the zero sequence current as input.

It increases the security of protection during the high impedance fault conditions. Low voltage criterion takes the phase voltages and phase-tophase voltages as inputs. It increases the security of protection when the three-phase fault occurred on the weak end side. Low current criterion takes the phase currents as inputs and it increases the dependability during the switch onto fault case of unloaded line.

The differential function can be allowed to trip as no load is fed through the line and protection is not working correctly. Features:

• Startup element is sensitive enough to detect the abnormal status of the protected system

• Startup element does not influence the operation speed of main protection

• Startup element would detect the evolving faults, high impedance faults and three phase fault on weak side

• It is possible to block the each sub function of startup element

• Startup signal has a settable pulse time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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