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ESL411 series microcomputer protection and measurement device
ESL411 series microcomputer protection and measurement device
Product details
The ESL-411 series microcomputer protection and measurement device is a new generation of digital protection and measurement device. Microcomputer protection is a relay protection composed of microcomputers and is the development direction of power system relay protection. It has high reliability, high selectivity, and high sensitivity. The hardware of the microcomputer protection device is centered around a microprocessor (microcontroller), equipped with auxiliary circuits such as input and output channels, human-machine interfaces, and communication interfaces, to achieve real-time monitoring and protection of the operation status of electrical equipment.
The ESL-411 series is widely used in various industries such as power, petrochemicals, metallurgy, steel, building materials, municipal, railway, and civil construction
The ESL-411 series protection is divided into 9 models, choose the corresponding model according to your needs.
model |
Protector |
Protection function |
ESL-411B |
Digital distribution transformer protective and monitoring device |
lOvercurrent protection lOvervoltage, low voltage, and overload protection lNegative zero sequence quick break and negative zero sequence inverse time limit protection lHigh and low voltage side zero sequence current protection lLow voltage side zero sequence current inverse time protection lRemote signaling, telemetry, and remote control functions |
ESL-411L |
digitline protective and monitoring device |
lThree stage low-voltage blocking direction overcurrent protection lThree phase automatic reclosing function lTwo stage zero sequence overcurrent protection lTwo time limit low cycle load reduction function loverload protection lPT disconnection monitoring and busbar insulation monitoring function lLow current grounding line selection function lVoltage loss protection function lRemote signaling, telemetry, and remote control functions |
ESL-411PA |
digitautomatic bus transfer protective and monitoring device |
lIncoming line interconnection/transformer interconnection lLow voltage sectional circuit breaker backup self switching lSegmented three-stage overcurrent protection lPT disconnection monitoring function lOverload cutting function lControl circuit disconnection monitoring lRemote signaling, telemetry, and remote control functions |
ESL-411C |
digitcapacitor protective and monitoring device |
lThree stage overcurrent protection lTwo stage zero sequence overcurrent protection lUnbalanced current protection lUnbalanced voltage protection lOvervoltage wave protection lLow voltage protection lPT disconnection monitoring function lRemote signaling, telemetry, and remote control functions |
ESL-411M |
digitmotor protective and monitoring device |
lQuick break, overcurrent protection, and current inverse time limit protection lprotect lNegative sequence quick break and negative sequence inverse time limit protection lLong start protection and overheat protection lLow voltage and overvoltage protection function lOverload and zero sequence overcurrent protection lRemote signaling, telemetry, and remote control functions lEquipped with operation box function lBody protection |
ESL-411MP |
digita bus or bus bar insulation monitoringdevice |
lInsulation monitoring of busbar at both ends lTwo bus PT parallel |
ESL-411J |
digitcomprehensive Measurement and controldevice |
l1-channel full power measurement lEquipped with operation box function l16 channel switch acquisition, 7 channel remote control, 2 channel DC acquisition |
ESL-411T |
digittransformer Differential protectiondevice |
lDifferential current quick break protection lBody protection lRemote signaling, telemetry, and remote control functions lRatio differential protection |
ESL-411TB |
digittransformer Low backup protectiondevice |
lThree stage load voltage blocking direction overcurrent protection lZero sequence overcurrent protection, zero sequence overvoltage protection lOverloading, starting the fan, and locking the pressure regulator lLack of phase protection lBus charging protection lPT disconnection, busbar insulation monitoring |
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