InstaGen 5kW 1ph String Inverter (2 MPPTs)

The InstaGen 5kW 1ph String Inverter (2 MPPTs) is a high-efficiency single-phase grid-tied inverter designed for residential PV systems, offering dual independent MPPT trackers for flexible array design and optimised yield.

Product Description

Part of the InstaGen on-grid inverter range, this 5kW unit operates on a 230V single-phase supply and is suitable for typical UK domestic installations. With a wide MPPT voltage window, transformerless design and IP65 weatherproof housing, it delivers reliable performance on a variety of roof layouts and module types.

Key Features

• Dual MPPT design: 2 independent maximum power point trackers for mixed orientations or partial shading.
• High efficiency: Maximum efficiency around 97–98% with transformerless topology.
• Wide DC input range: Suits modern high-power modules and long strings.
• Natural cooling: Fanless design for quiet operation and reduced maintenance.
• Outdoor rated: IP65 enclosure for external wall mounting.
• Smart monitoring: Connectivity options for app or web-based performance monitoring.

Electrical Specifications

• Rated AC output power: 5.0 kW (230V, 50Hz single-phase).
• Max. apparent power: approx. 5.0–5.12 kVA.
• Max. efficiency: up to ~97–98%.
• DC input voltage range (MPPT): typically 125–500 V DC.
• Max. DC input voltage: 600 V DC (typical for this class).
• Number of MPPTs: 2, with 1 string per MPPT.
• Max. DC input current: up to 16 A per MPPT (32 A total).
• Power factor: ≥ 0.99 at rated power, adjustable.
• THD: < 3% at rated output.

Physical Specifications

• Dimensions (H × W × D): approx. 502 × 461 × 202 mm.
• Weight: approx. 20–24 kg.
• Cooling: Natural convection (fanless).
• Enclosure rating: IP65 (dust-tight and water-jet protected).
• Mounting: Wall-mount bracket for indoor or outdoor installation.
• Display / interface: Status LEDs and/or LCD plus buttons, with commissioning via app or web.

System & Application Notes

• Application: Grid-tied residential PV systems up to 5 kW per inverter.
• Grid standards: Compliant with EN 50549-1, VDE-AR-N 4105 and UK G98/G99 single-phase requirements.
• DC/AC ratio: Supports oversizing of the PV array (typically up to ~150% DC:AC).
• Communication: RS485 as standard, with WiFi/Ethernet/4G options via communication modules or dongles.
• Protection functions: Anti-islanding, over/under-voltage, over/under-frequency, overcurrent and DC reverse-polarity protection.
• Warranty: Typically 10-year manufacturer warranty, extendable subject to supplier terms.