9
Instruction Booklet
IB022003EN
Effective April 2018
Revision #3
Instructions for installation, operation, and
maintenance of Type MVS-ND, metal-enclosed
switchgear assemblies: 4.76 kV or 15.0 kV class
EATON
www.eaton.com
Figure 6. Top Cable Entrance, Top-side Cable Exit (or Reverse).
Factory installed NORYL
T
insulation
Factory installed insulation may be NORYL, a high-performance
engineering thermoplastic . It can be irreversibly damaged if it comes
in contact with certain chemicals . See Electrical parts and insulation
check and cleaning on Page 11 for cleaning procedures .
WARNING
USE OF SOLVENTS, OILS, JOINT COMPOUNDS, OR GREASES ON OR NEAR
NORYL INSULATION WILL DESTROY IT. CLEAN ONLY WITH WATER OR
ISOPROPYL ALCOHOL.
CAUTION
ISOPROPYL ALCOHOL IS FLAMMABLE. PROVIDE ADEQUATE VENTILATION
AND KEEP AWAY FROM FLAMES AND OTHER IGNITION SOURCES.
CONSULT YOUR SAFETY DEPARTMENT BEFORE USING.
Securing MVS-ND switchgear assemblies to foundations
If the switchgear assembly was purchased for seismic applications,
follow the instructions on the specific drawings provided for the
switchgear assembly that address the anchoring details . Another
drawing addresses the load bearing requirements . Indoor or outdoor
vertical sections are secured using foundation bolts . Anchors and lag
screws may be used in place of J-bolts if desired .
Typical floor plans
Refer to customer drawings for floor plans for installing MVS
switchgear in typical and seismic applications .
Connection of space heaters to customers source
Space heaters, when supplied, must be energized to prevent
condensation . Heaters are supplied for 120 V or 240 V sources as
shown on the drawings .
For switchgear assemblies with or without heater control devices,
heaters will be internally wired and brought to a terminal block .
A wiring diagram will be furnished with the drawings showing
connection points for power .
