INTEGRATED SECONDARY SOLUTIONS

 

Solutions that connect and protect secondary power distribution

 

ABB’s integrated secondary solutions are designed to connect and protect an evolving grid. ABB’s integrated secondary solutions are a type and arc tested comprising an enclosure containing medium voltage (MV) switchgear, distribution transformers, low voltage (LV) switchboards, connections and auxiliary equipment to supply low voltage energy from medium voltage systems and vice versa.

 

For secondary integrated secondary solutions, ABB offers three solutions: UniPack, EcoFlex and Secondary Skid Units (SSU). The best solution for our customers’ needs will depend on the application and some aspects such as where the integrated secondary solutions will be placed and the needed transformer ratings.

UNIPACK-S & UNIPACK-G

UniPack, available for ratings up to 40.5 kV and 25 kA, is compact type tested, and arc tested solution for secondary substations. It comprises an enclosure containing medium voltage (MV) switchgear, distribution transformers up to 3,500 kVA, low voltage (LV) switchboards, connections and auxiliary equipment to supply low voltage energy from medium voltage systems or vice versa.

:

  • Safe & Reliable with type tested CSS and components
  • Enhanced design: compact and flexible configurations
  • Compliant with IEC standards and F-gas regulation

:

  • Data centers
  • Renewables
  • Utility
  • Industry
  • Infrastructure
  • EV Charging

ECOFLEX

EcoFlex, available for ratings up to 40.5 kV and 25 kA, is a type tested, and arc tested modular and space efficient solution for secondary substations.

:

  • Integrated solution and factory tested for fast installation and start-up
  • ISO enclosure for efficient transportation, by land or sea
  • Multiple layouts to meet a wide range of applications

:

  • Solar and renewables
  • Data Centers
  • Utilities
  • Infrastructure

SECONDARY SKID UNIT (SSU)

Secondary Skid Unit (SSU), available for ratings up to 40.5 kV and 25 kA, is a prefabricated and arc proof solution for secondary substations.

:

  • Safe & Reliable with type tested SSU and components
  • Easy and fast installation, commissioning with prefabricated solution
  • Compliant with IEC standards and ideal for demanding industrial and renewable energy environments

:

  • Solar
  • Data center
  • Industry applications

Product scope

  UniPack-S UniPack-G EcoFlex Secondary Skid Unit (SSU)
Max. rated voltage 40.5 kV 40.5 kV 40.5 kV 40.5 kV
Max. transformer rating 3,500 kVA 3,500 kVA 6,300 kVA[IS1]  7,500 kVA
Max. rated short-time withstand current MV 25 kA 1s 25 kA 1s 25 kA 1s 25kA 1s
Internal arc classification IAC-AB 20kA 1s per IEC62271-202 IAC-AB 20kA 1s per IEC62271-202 IAC-AB 20kA 1s per IEC62271-202 IAC-A 20kA 1s per IEC62271-212
Medium voltage switchgear type SF6-insulated
SF6-free insulated (dry air) - no IAC classification		 SF6-insulated
SF6-free insulated (dry air) - no IAC classification		 SF6-insulated
SF6-free insulated (dry air)- no IAC classification[IS6] 		 SF6-insulated
SF6-free insulated (dry air) - no IAC classification
Low voltage switchboard UniPack low voltage distribution board (LVS)
Incomer – Molded Case Circuit-Breakers (MCCB) or Air Circuit-Breaker (ACB)
Distribution – fuse switch disconnector or MCCB		 UniPack low voltage distribution board (LVS)
Incomer – Molded Case Circuit-Breakers (MCCB) or Air Circuit - Breaker (ACB)
Distribution – fuse switch disconnector or MCCB		 EcoFlex low voltage distribution board (LVS)
Incomer - Molded Case Circuit- Breakers (MCCB) or Air Circuit - Breaker (ACB)
Distribution – fuse switch disconnector or MCCB		 UniPack low voltage distribution board (LVS)
Incomer – Molded Case Circuit-Breakers (MCCB) or Air Circuit - Breaker (ACB)
Distribution – fuse switch disconnector or MCCB
Rated voltage low voltage up to 800 VAC up to 800 VAC up to 800 VAC up to 800 VAC
Standards IEC62271-202 IEC62271-202 IEC62271-202 IEC62271-212
IP class MV LV/TR (up to) IP54/45 IP54/45 IP54/45 IP54/XX
Enclosure Stainless steel GPR (glass reinforced polyester) ISO standard Semi open design
Applications Ideal for sites open to the general public for power distribution application in a utility grid, utility grid connected application, string inverter solar step-up unit in a public space, datacenter, high power EV charging and general industry Ideal for sites open to the general public for power distribution application in a utility grid, utility grid connected application, string inverter solar step-up unit in a public space, datacenter, high power EV charging and general industry Ideal for long range transportation requiring sea, rail or land transport. Industrial, renewable energy and commercial sites around the globe such as step up photovoltaic stations, battery energy storage applications, data centers and industrial power distribution Ideal for a site with limited access for the general public, mainly for industrial or renewable energy sites, being a step-up unit in a solar site with a 175-185kW string inverter topology, datacenter and industrial application

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