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Overcurrent Protection Device

Description

Technical spec

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The Overcurrent Protection Device (MTZ) is designed for diagnostic testing, control and protection of isolated neutral systems from short-circuit currents. MTZ device performs various protection, measurement and monitoring functions. The device maintains high precision of measurement and constancy of performance.

Functions

adjustment of setpoints for overcurrent protection from 2 · Inom to 7 · Inom of the electric switchboard;
adjustment of setpoints for overload protection from 0.3 · Inom to 1.5 · Inom of the electric switchboard;
adjustment of time delay for overload protection system from 0 to 20 s.

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Supply voltage	~11,5..42,5 V
Current consumption	< 200 mА
Data interface	RS485 (CAN)
Data rate	19200 bps
Number of controlled channels	3
Response time in case of short circuit	40 ms
Response time in case of overload equal 1,5 · Irated	20 sek
Switching voltage of contacts of the Executive relay of alternating current	250 V
Switching current of contacts of the actuating relay	5 А
Operating current range	Determined by the characteristics of the current sensors
Dimensions	105х75х90 mm
International Protection Marking	IP20
Mass	0,5 kg