Distribution of energy. Traction substation "turnkey"

DC Switchgears 600...3300 V. Negative Switchgears

Negative Switchgears are used in city transport and underground traction substations for isolation of negative busbar.

Switchgear design provides:

high reliability and maintainability;
easy access for internal inspection;
convenient access to measuring devices, as well as to components;
maintenance with standard tools

Negative Switchgears for city electric transport (tram, trolleybus) - are subdivided in two types: modular-type and line-type. Modular-type switchgears are provided for rectifiers negative busbars connection to main negative busbar. Negative line-type switchgears are provided for overhead network outgoing feeders connection to substation negative busbar

Technical characteristics

Name of Parameter	Unit	DC Switchgear rated voltage arrangement
		600 V			750 V, 825 V
Negative switchgear type		line	modular		-
Rated voltage of power circuit	V	600			750, 825
Rated current of power circuit	V	1000	2000		4000
Electrodynamic resistance	kA	80	100		100
Test voltage	kV	10
Control		microprocessor	microprocessor, relay
Rated voltage of control circuits	V	110, 220
Rated voltage of lighting DC circuits	V	24
Rated voltage of signaling DC circuits	V	24
Cooling		natural convection
Cycling	per hour	40
Mechanical strength, minimum	cycles	20000	30000	30000
Protection degree		IP43

Switchgear can be optionally designed with parameters altered from stated above

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