Medium Voltage Switchgear 17.5KV (NEX TEPCO)
NEX TEPCO a universal solution:
NEX TEPCO is the result of experience acquired worldwide
and provides you with a high level of safety and reliability.
It is particularly suitable for the MV section of HV/MV
substations and high power MV/MV substations.
NEX TEPCO meets MV substation supply needs for all
applications
NEX TEPCO is an indoor switchgear assembly that provides maximum user safety.
It is intended to meet all electrical distribution needs up to 17.5 KV and incorporates a set of innovative solutions designed using proven techniques:
– High performance breaking devices (SF6 or Vacuum)
– Digital protection and control system
– A wide range of cubicles designed and tested to meet all requirements
Metal Clad Cubicle:
NEX TEPCO simple for everyone to use rolling on floor switchgear.
The compartments are isolated from each other by earthed metal partitions.
This means that servicing can be carried out in one of the compartments while the others are still energized.
The earthing switch has full making capacity and provides total user protection in the event of closing on a dead short-circuit.
High Level Protection of People:
NEX TEPCO is designed to protect the complete system against the risk of internal
fault as per IEC 200-62271 through its comprehensive features such as:
– Earthing switch with making capacity
– Pressure relief flaps
– High durability in polluted environment
– 4 sided internal arc protection
– Rapid fault-clearance by Arc limitor
– Racking behind door
Approval:
NEX TEPCO cubicle passed all necessary tests carried out in The Egyptian Electricity Authority Pyramids High Voltage Research Center and approved from The Egyptian Electricity Holding Company.
Standards:
NEX TEPCO conform with the most recent standards:
Switchboard Assemblies
Circuit Breakers
Contactors
Current transformers
Voltage transformers
Protection relays
Low Voltage wiring
Low Power Ct
Earthing switch
Environmental testing & Corrosion
IEC 62271-200 (replacing IEC 60289) IEC 60529 & IEC 60694
IEC 62271-100
IEC 60470
IEC 60044-1
IEC 60044-2
IEC 60255 & IEC 61000
IEC 60227
IEC 60044-8 (FDIS)
IEC 62271-102
IEC 60068 & IEC 60654
| TECHNICAL DATA | ||||
|---|---|---|---|---|
| Rated Voltage (KV) | 7.5 | 12 | 17.5 | |
| Insulation level | Power frequency withstand voltage (KV) | 20 | 28 | 38 |
| Lightning impulse withstand voltage (KV) | 60 | 75 | 95 | |
| Maximum nominal current and short-time withstand current | ||||
| functional unit with SF6 circuit breaker | ||||
| Ith max (KA / 3 s) | 31.5 | 31.5 | 31.5 | |
| In max (A) | 2500 | 2500 | 2500 | |
| Functional unit with vacuum circuit breaker | ||||
| Ith max (KA / 3 s) | 31.5 | 31.5 | 31.5 | |
| In max (A) | 2500 | 2500 | 2500 | |