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Open Combination Electrical Appliances (OCEA)- Compact 40.5kV Substation Solutions

Open Combination Electrical Appliances(OCEA)
ZCW10-40.5 Series Open Combination Electrical Appliances View Fenarro OCEA Series →
Fenarro's ZCW10-40.5/T600-31.5 Open Combination Electrical Appliances is a complete set of combined high-voltage equipment using air as the external insulation medium and SF6 gas as the arc-extinguishing medium. It is designed for the control and protection of 40.5 kV three-phase AC power transmission and distribution systems. It can also be used for bus-tie circuit breaker applications and capacitor bank switching. The equipment is particularly suitable for urban substations, industrial substations, and mountainous-area substations where installation space is limited.
Fenarro Air Insulated Switchgear AIS
Integrated OCEA Structure

Fenarro ZCW10-40.5 OCEA Component Layout

Key switching, isolation, measuring, protection, and busbar functions are integrated into one grounded steel support structure for compact 40.5kV substation projects.

Grounded Steel Support Structure
Circuit Breaker
Isolating Switch
Earthing Switch
Current Transformer
SF6 Voltage Transformer
Surge Arrester
Busbars

Compact 40.5kV OCEA Design for 

Space-Saving Substations

Fenarro ZCW10-40.5 open combination electrical appliances integrates key high-voltage components into one compact structure, helping reduce land occupation, simplify installation, and support reliable 40.5kV power distribution projects.

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Compact Design
30 % – 50 %

Occupies only 30%–50% of the space required by traditional separated equipment.

⚡
Rated Voltage
40.5 kV

Designed for 40.5kV three-phase AC power systems.

A
Rated Current
1600 A

Supports medium-voltage power control, protection, and connection functions.

Key Features for Open Combination Electrical Appliances (OCEA)

Space Optimization
  •  50-70% space reduction compared to conventional layouts
  •  Compact integrated design on grounded steel structure
  •  Prefabricated self-supporting busbars between bays
  • Flexible arrangement for various wiring configurations

Advanced Component Integration​​​​​​​
  •  Circuit breaker, disconnector, grounding switch combination
  •  Built-in current transformers and SF6 voltage transformers
  •  Integrated surge arresters with composite insulators
     Complete busbar system included
Maintenance Efficiency​​​​​​​
 Self-energy arc-extinguishing chamber technology
 CT10-A spring operating mechanism
 Minimal maintenance requirements
​​​​​​​ High reliability design

Main Technical Parameters for Fenarro OCEA

View key technical parameters for Fenarro ZCW10-40.5 open combination eectrical appliances. Final configuration should be confirmed according to project specifications and technical drawings.

Serial No. Name Unit Data
1 Rated Voltage kV 40.5
2 Rated Frequency Hz 50
3 Rated Current A 1600
4 Rated Short-time Withstand Current kA 34.5
5 Rated Peak Withstand Current kA 80
6 Rated Short-circuit Duration s 4
7 Rated Insulation Level (Lightning Impulse Withstand Voltage, Peak) kV 185/215 (Across Contacts)
  1min Power Frequency Withstand Voltage kV 95/118 (Across Contacts)
8 Control & Auxiliary Circuit Voltage V DC110, DC220; AC220
9 Partial Discharge Quantity pC ≤20
10 Phase-to-phase Width mm 1.6 (Standard)
For additional parameters, structure details, applications, and product configuration information, view the full Fenarro ZCW10-40.5 AIS product page.
View Full OCEA Technical Details

OCEA vs Conventional Separated Equipment

Compare Fenarro Open Combination Electrical Appliances with traditional high-voltage equipment layouts.

⧉

Traditional
Separated Equipment

⚙

Separate Components

Circuit breaker, disconnector, transformer and protection components are installed separately.

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Larger Installation Space

Requires more installation area due to independent equipment arrangement.

⚒

More On-site Assembly

Multiple installation and commissioning procedures are required.

▦

Complex Project Coordination

Separate equipment delivery and installation increase project coordination workload.

RECOMMENDED
SOLUTION
Fenarro Open Combination Electrical Appliances

Open Combination
Electrical Appliances (OCEA Series)

◇

Integrated Structure

Multiple high-voltage components are integrated into one grounded steel support structure.

◯

Space Optimization

Requires only 30%-50% of the space required by conventional separated equipment.

▣

Factory Prefabrication

Complete bay assembly and commissioning are completed before delivery.

↔

Flexible Application

Supports different electrical connection schemes for various project requirements.

Application Scenarios ​

Transmission Substations

 

Urban & Enterprise Substations

 
Suitable for city substations and enterprise substations where installation space is limited and compact equipment layout is required.
Renewable Energy Integration

 

Utility Distribution Networks

 
Used in utility distribution networks for sectionalizing, connection, and protection of 40.5kV three-phase AC power systems.
Long-Distance Transmission Lines

 

Mountain Compact Substations

 
Designed for compact substations in mountainous areas where terrain conditions, installation space, and site layout are constrained.
Industrial Power Systems

 

Capacitor Bank 

 
Suitable for capacitor bank switching and bus-tie breaker applications requiring reliable control, switching, and protection performance.
Ready to Specify Your Open Combination Electrical Appliances ?


Contact our engineering team for technical consultation and customized solutions. 
Request a quote with competitive pricing and delivery timelines.

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Why Choose Fenarro OCEA

Fenarro ZCW10-40.5 OCEA combines switching, isolation, measuring, protection, and busbar functions in one compact structure, helping simplify layout, installation, and maintenance.

01 Space Saving

Compact Integrated Design

Requires only 30%–50% of the space used by traditional separated equipment.

02 Easy Installation

Factory-Prefabricated Modules

Assembled and tested before delivery to reduce on-site installation workload.

03 40.5kV System

Reliable Power Protection

Supports control, protection, and connection for three-phase AC power systems.

04 Maintenance Friendly

Practical Operation

Designed for reliable operation with easier inspection and servicing requirements.

FAQs About Fenarro's Open Combination Electrical Appliances (OCEA)

  • Q What maintenance is required for the integrated components?

    A Minimal maintenance - primarily visual inspections and SF6 gas pressure monitoring

  • Q Are your OCEA systems compatible with existing SCADA systems?

    A Yes, we support all standard communication protocols including IEC 61850

  • Q How much space saving can be achieved compared to conventional switchgear?

    A Typically 50-70% space reduction, depending on configuration and layout

  • Q What is the typical delivery time for OCEA systems?

    A Standard configurations: 12-16 weeks; Custom designs: 16-20 weeks

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Helpful Guides Before Ordering

Fenarro has been committed to providing safe,  efficient and convenient solutions for power  systems since 2009

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 Email: julien@fenarro.com
  Mobile: +86-13962241135
  Telephone: +86-0512-66728956
  Fax: +86-0512-66728971
    Address: 2009, Bldg 2, No.168 Jingmao road, Suzhou Industrial Park, Suzhou, Jiangsu, China
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