How to determine the meaning of a transformer part number TP1 and DOE 2016?
Siemens shares transformer part numbers between Series H and Series J. Many part numbers can be ordered in either series. Some part numbers may only be available in...
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What is the difference between TP1 and DOE 2016
Efficiency levels are defined by the US Department of Energy (DOE). TP1 efficiency went to effect on January 1, 2007 with efficiency levels as defined by Energy Act of...
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What is the difference in enclosures between single phase and three phase transformers?
The enclosures share the same design for single phase and three phase. The only differences is the sizes based on kVA and featured.
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Are there any restrictions as to what electrical components can be mounted in the front compartments of Type WL arc resistant LVS?
Wires/cables that connect directly to the bus bar can�t be run into the front compartments (blank, auxiliary, breaker, etc.) without current limiting fuses in the...
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Can arc resistant WL LVS be supplied in a NEMA 1 enclosure with gaskets and filters?
The arc resistant WL LVS standard design has extensive gasketing to prevent arc flash gases and debris from escaping the enclosure but not every cover and door is...
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Can I have an infrared viewport in my arc resistant low voltage switchgear?
Yes, provided the viewing pane used meets the minimum requirements listed in the Siemens LVS UL file, an infrared view-port is allowed in WL arc resistant LVS. The...
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Does arc resistant WL low voltage switchgear have a different footprint that standard WL low voltage switchgear?
No, the footprint and breaker stacking density is the same for arc resistant WL LVS as it is for standard WL LVS.
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Does the arc resistant construction have an affect on the internal bussing assemblies?
The only effect that the arc resistant design has on the bussing assemblies (vertical and horizontal) is that insulated/isolated bus assemblies are always provided with...
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Does WL arc resistant low voltage switchgear protect my equipment in addition to protecting personnel?
The primary purpose of arc resistant low voltage switchgear is to protect operating personnel that come in proximity of the equipment. Equipment protection isn't...
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How is arc resistant low voltage switchgear rated? What are the performance characteristics of the ratings?
IEEE C37.20.7 established the following performance ratings that must be listed on the apparatus rating label: Accessibility Type (example � Type 2B) Type 1...
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