Switchgear with an optical monitoring system

A switchgear, comprising:

• an installation housing having an outer side and an internal current and/or voltage source;
• an optical monitoring system for examining switchgear switching positions, said monitoring system including:
• an encapsulated housing disposed in said installation housing, said encapsulated housing having a region with a first transparent window;
• at least one isolating switch accommodated in said encapsulated housing;
• an observation system disposed at said installation housing;
• a fiber-optic system leading from said outer side of said installation housing to said first transparent window;
• said fiber-optic system including at least one first fiber bundle having a first end and a second end, said at least one first fiber bundle configured to capture an optical picture of said at least one isolating switch through said first transparent window and transmit the optical picture to said observation system disposed at said first end;
• said fiber-optic system including at least one second fiber bundle having a third end and a fourth end;
• and
• a light source disposed at said third end for emitting light to be guided from said third end to said fourth end in a region of said first transparent window and to be guided through said first transparent window, said light source being supplied with external electrical current, voltage, and/or energy from an external source outside said installation housing;
• and
• electronics configured for recognizing whether the external source is connected to said light source and automatically supplying said light source when said internal current and/or voltage source is not available to supply the light source and/or does not make sufficient current and/or voltage available.