Insulation transformer(Lightning resistant type)

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The TC-type train approach warning signaling device used as a railway signal protects the primary side equipment from lightning surges invading

from the secondary side of the power system.It is an insulating transformer with reverse voltage resistance.

Features

• TC-type train approach warning system signaling device.

Item		Performance
		300S	750S
Capacity		300VA	750VA
Frequency		50 / 60Hz
Withstand voltage	2 side～1side、 2side～shield	strike 1.2/50μs 30kV、AC10kV 1min	—
	1 side～shield	AC3kV 1min	—
Voltage ratio		100V、110V：100V、110V
Rate of voltage variation		5% below
Phase number		monophase
Electrostatic shielding		have
VA efficiency		93% above
Types of insulation		B class
Temperature rise limit		below 55℃（Ambient temperature 60℃）
Surge transfer rate		1/1000 below	—
Insulation resistance	2 side～1side、 2side～shield、 1 side～shield	When DC100V Insulation impedance meter 100MΩabove
TC of Number of train approaching warning devices		1	2