If an exhaust plenum and exhaust ductwork are desired, how does the exhaust ductwork attach to the vertical section plenums and what are the guidelines for the exhaust ductwork?
Typically, the exhaust duct attaches to the left side of the plenum on the left side of the lineup (looking from the front of the lineup) or to the right side of the...
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Is an exhaust plenum required with Siemens WL arc resistant low voltage switchgear?
The Siemens WL arc resistant low voltage switchgear design was tested and certified without the need for an exhaust plenum. An optional exhaust plenum and exhaust...
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Is Siemens WL arc resistant low voltage switchgear UL labeled?
There is no UL standard for arc resistant low voltage switchgear but UL did witness and certify that Siemens WL arc resistant low voltage switchgear successfully passed...
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What are the ratings for Siemens arc resistant Type WL low voltage switchgear?
Accessibility rating is Type 2B. The maximum internal arcing short-circuit rating is 100kA @ 508VAC and 85kA @ 635 VAC. The maximum system voltage is 635VAC and the...
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What are the required clearances around Siemens WL arc resistant low voltage switchgear?
The minimum required space around the equipment is 39” in the front, 36” in the back and sides and 118” from floor to ceiling (120” from floor to ceiling for arc...
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What causes an arc fault?
An internal arcing fault can be caused by insulation degradation, insulation contamination, entrance of vermin, foreign objects coming into contact with energized bus,...
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What enclosure types are available with Siemens WL arc resistant low voltage switchgear?
Arc resistant WL low voltage switchgear is currently only available in an indoor (NEMA 1) enclosure. Outdoor enclosures aren't available but the indoor arc resistant...
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What industry standard governs the design and testing of arc resistant low voltage switchgear?
There is no separate design standard but arc resistant low voltage switchgear is performance tested in accordance to IEEE C37.20.7-2007 (IEEE Guide for Testing...
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What is the primary purpose of arc resistant Siemens WL arc resistant low voltage switchgear?
Siemens WL low voltage switchgear is designed and tested to provide an additional degree of protection for personnel performing normal operating duties in proximity to...
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What low voltage switchgear features are standard with arc resistant WL low voltage switchgear but optional with non arc resistant WL low voltage switchgear (LVS)?
Arc resistant WL low voltage switchgear includes the following features as a standard that are optional with non arc resistant WL low voltage switchgear: · ...
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