Trio Castor Series 18-25 kW On-Grid Inverters

The Trio Castor Series bridges medium commercial project requirements with five power levels from 18 kW to 25 kW. A 200-1000 V MPPT window, four PV string inputs distributed across two trackers and a 1100 V maximum input enable efficient array design for commercial rooftops. Intelligent air cooling, IP65 protection, remote-monitoring options and comprehensive AC/DC safeguards support reliable long-term grid-connected operation.

Key Features

• Five power options from 18 kW to 25 kW
• Two MPPT trackers with 2+2 string inputs
• 1100 V maximum PV input
• Up to 98.5% maximum efficiency
• Intelligent air cooling
• IP65 protection and Type II AC/DC surge protection
• Optional multi-channel remote monitoring

Recommended Applications

• Commercial rooftops
• Agricultural and light-industrial facilities
• Schools, hotels and municipal buildings
• Medium three-phase self-consumption systems

Model Selection Guidance

Use Castor where four PV strings can be organised as two balanced MPPT groups. Select the AC rating against connection capacity and verify string current against the 26+26 A operating-current limit.

Essential Shared Specifications

• AC connection: 220/380 V, 230/400 V; 0.85Un-1.1Un; 3L/N/PE.
• Grid frequency: 50/45-55 Hz, 60/55-65 Hz.
• Power quality: power factor 0.8 leading to 0.8 lagging; THDi <3%; DC injection <0.5%In.
• Communication and monitoring: RS485/RS232; GPRS/WIFI/Bluetooth/4G/LAN (optional).
• Protection architecture: DC reverse polarity; AC overcurrent, overvoltage and short circuit; thermal; insulation impedance; DC component monitoring; anti-islanding; residual current detection; optional AFCI; Type II DC and Type II AC surge protection; DC switch.
• Operating environment: -25 to +60°C; derating above 45°C; humidity 0-100%; altitude 4000 m.
• Topology and standards: Non-Isolated; OVC II (DC), OVC III (AC); grid standards IEC 61727, IEC 62116, EN 50549; IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2.

Editorial Source Notes

• The final two general-data labels in the sheet are visually transposed; intelligent air cooling is confirmed by the category copy and series presentation.