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ESL211/212 series microcomputer protection and measurement device
ESL211/212 series microcomputer protection and measurement device
Product details
ESL-211/212 microcomputer comprehensive protection device is suitable for the protection of plant transformers, power supply incoming and outgoing lines, busbars, and sections with voltage levels of 10KV and below. The protection device adopts a 32-bit microprocessor and an independent hardware watchdog. The high-performance hardware system ensures that the device has strong data processing capabilities.
The ESL-211/212 microcomputer comprehensive protection device has been widely used in various industries such as power, petrochemical, metallurgy, steel, building materials, municipal, railway, and civil construction.
ESL-211 and ESL-212 have the same function but different wiring methods: ESL-211 uses two sets of CT wiring methods for protection; ESL-212 is a three group CT wiring protection method.
Protect measurement and control functions |
lThree stage overcurrent (i.e. instantaneous current fast break, delayed current fast break) The overcurrent protection function with intermittent and timed limits can be activated or deactivated separately for each section; lOverload protection function: export trip or alarm can be selected; lZero sequence overcurrent protection function: outlet trip or alarm can be selected; lZero sequence overvoltage protection function: export trip or alarm can be selected; lLow voltage protection function: export trip or alarm can be selected; lOvervoltage protection function: export trip or alarm can be selected; lOvercurrent reverse time limit protection; lPT disconnection protection function; lNon electricity protection function: heavy gas trip, over temperature trip, light Gas alarm, over temperature alarm, etc. (Users can set non electricity definitions as needed) |
monitor function |
lCT current Ia Ib、Ic，Zero sequence current I0； lThree-phase phase voltage Ua, Ub，Uc； lThree phase line voltage Uab, Ubc，Uca，Zero sequence voltage 3U0； lPositive and negative sequence currents I1 \ I2； lTotal active power, total reactive power, and power factor； |
Input/output function |
l8-way switch input l12 analog inputs l10 relay outputs |
communication |
lrs485 communicationOr CAN bus interface |
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