ZGFI7101 Earth Leakage Detector0 pages

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Zilog Peripheral Products

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Ziiog ZGFI7101 Earth Leakage Detector Product Brief

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An □ IXYS Company

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ZGF17101 ADVANTAGES

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• Safety and Standards Compliance

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• Very Low Power Requirements

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• Integrated Solution

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• Zilog's Continuing Commitment to

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Supporting Our Customers

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Zilog'sZGFI7101 Earth Leakage Detector

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An Integrated Ground Fault Interrupt Solution

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Overview

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TheZGFI7101 Earth Leakage Detector prevents electrocution by detecting leakage current, and is designed for

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use in earth leakage circuit interrupters for operation directly off the AC line in circuit breakers. It contains a pre-

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regulator, main regulator, post-regulator, differential amplifier, level comparator and latch circuit. The differential

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amplifier input is connected to the secondary node of the zero-current transformer. The level comparator

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generates a high level signal when earth leakage current is greaterthan a pre set level.

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ZGFI7101IC Block Diagram

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V+

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s

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0-0

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Sc

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Voltage Regulator

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-CZ=

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Latch

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Bias

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-H-

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-H-

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v

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IN

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GND

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