01
Repeatable field design
Standardize string inputs, enclosure layouts, cable entries and device references across plant blocks.
All applications
03 / APPLICATION
Solar Power Plants
Scalable DC collection, field protection and project support for high string counts and centralized plant requirements.
01 / SYSTEM CONTEXT
Design around the operating environment.
Utility-scale plants demand repeatable field assemblies, clear circuit identification and controlled product documentation across thousands of DC connections. VIOX supports project-defined combiner, isolation and protection configurations for consistent deployment across the site.
Final selection must follow the approved electrical design, applicable standards and site conditions. VIOX product references provide a structured starting point for engineering review and quotation.
02 / DESIGN PRIORITIES
What the DC protection plan must resolve.
02
High-voltage DC selection
Verify maximum calculated system voltage, insulation coordination and switching duty under site temperature conditions.
03
Maintainable collection
Plan access, spare ways, monitoring interfaces and replacement procedures around long-term plant operation.
04
Supply consistency
Control approved components, markings, packaging and batch records for staged project delivery.
03 / SYSTEM PATH
From PV field to protected inverter input.
- 01Utility PV string fields
- 02Field combiner boxes
- 03DC feeder protection and isolation
- 04Central or distributed inverter stations
04 / RECOMMENDED PRODUCTS
Build the protection chain.
Combine only the functions required by the approved system design. Ratings and device coordination remain project-specific.
08
Branch and feeder protection
03DC Circuit Breaker
Miniature and molded-case circuit breakers for photovoltaic, storage and industrial DC distribution.
PV DC isolation
04DC Isolator Switch
VOD1 load-break DC isolator switches provide dependable photovoltaic circuit isolation up to 1500V DC, with panel, DIN-rail, enclosed and door-clutch installation options.
PV field connection
05MC4 Solar Connector
PV-MC straight connectors and PV-T2, PV-T3 and PV-T4 branch connectors for reliable photovoltaic module and string wiring.
System integration
02PV Combiner Box
VOPV solar combiner boxes organize one to three photovoltaic input circuits with gPV fuse protection, Type 2 DC surge protection and load-break DC isolation.
String protection
01PV DC Fuse
Coordinate fuse isolation and circuit protection for photovoltaic strings, combiner boxes and low-voltage AC equipment with 10 × 38 mm and 14 × 51 mm DIN-rail platforms.
Surge protection
PV DC SPD
PV DC surge protective devices for photovoltaic combiner boxes, inverters and DC distribution cabinets, including the VO-PV40 Type 2 range up to 1500V DC.
APPLICATION ENGINEERING