A power transformer is the most costly and essential equipment of an electrical transformer. So, for getting. high performance and long functional life of the transformer, it is desired to perform various maintenance activities. Not only that, but a power transformer also requires various maintenance actions including measurement and testing of different parameters of the transformer. There are mainly two types of maintenance of transformer. We perform one group is in a routine basis, and the second group is as when required.

During the operation, switchgear is exposed to various stresses: electrical (clearing fault currents, voltage surges and lightning voltages etc.), mechanical (opening/ closing forces, electrodynamic forces during short-circuits, wind, etc.), thermal (ambient temperature, nominal current heating, short circuit currents, etc.) and chemical (Products of the disintegration of the gas due to the arc, humidity, dust, etc.). Circuit breaker monitoring parameters can be divided into six. groups according to the subassemblies they belong to [1-3]: 1) Operating mechanism, 2) Contact, 3) Control circuit, 4) Arc extinction and insulating medium, 5) System, 6) Environment. Detailed classification is given in Appendix A. Operating mechanism monitored values provide information on the current state of the mechanism and motor of the circuit breaker and his readiness for performing future operations [4]. Contact monitored values are a good indicator of circuit breaker wear which must be remedied to prevent catastrophic consequences.

LIGHTING

For a cost-effective and innovative lighting solution, our design and installation services include a variety of customized choices, with a wide range of Consultants and Designers. NBEC. has strived to be the lowest cost provider of quality lighting installations to our customers. NBEC is well positioned to offer customers complete turnkey services from design to installation as well as emergency maintenance and repair.

LIGHTING CAPABILITIES AND SERVICES

• Industrial and Warehouse Interior Lighting Solutions
• Hi-Bay LED Warehouse Lighting. (New & Retrofit Solutions)
• Hi-Bay Fluorescent Lighting. (New & Retrofit Solutions)
• High Intensity Discharge Lighting (H.I.D.) New & Retrofit Solutions
• Food & Beverage Industry Rated Lighting
• Oil & Gas Listed Lighting (XP, Oil, & Dust Tight)
• Lighting Audits with Payback Analysis

COMMERCIAL / OFFICE & ENVIRONMENT LIGHTING

• Interior Architectural Lighting, Incandescent, Fluorescent and New LED Lighting Solutions.
• Direct / Indirect Lighting.
• Atmosphere Lighting.
• Classroom Lighting.
• Dimming & Lighting Control Systems
• Retail Store Lighting.
• Low Voltage Lighting Solutions.
• Decorative Lighting.

EXTERIOR LIGHTING

• Parking Lot / Pole Lighting. Maintenance, Repair, Installation,& Retrofit.
• Municipal Street Lighting.
• Parking Garage Lighting.
• HID, Metal Halide, High Pressure Sodium, Mercury Vapor, &
• LED Lighting.
• Maintenance, Retrofit, Installation, & Repair.
•  Underground Cable Repair or Replacement.
• Sports Lighting (Baseball, Softball, Football, Soccer, etc.....)