Accessories

A: In practice the two overlap, and the boundary is set by power and control scope. The 500/630 kW unit is a transformerless power conversion system: it handles battery DC to AC conversion only, has no PV MPPT, runs constant-voltage or constant-power control, and relies on an external EMS over RS485 or TCP/IP. The 160 kW unit is called an energy storage inverter because it adds stand-alone operation, VSG grid-forming control and frequency-response functions such as FFR, FCR and FCAS. Above roughly 500 kW the market almost always uses the term PCS.

A: Size from discharge power. A 1 MWh system discharging over two hours needs about 500 kW of conversion, so one 500 kW PCS fits; over four hours, about 250 kW. Then check the DC voltage: the 500/630 kW PCS accepts 600–900 V, so the battery string has to be configured inside that window. If the battery is built at 1500 V, use the 160 kW inverter in parallel groups instead, or add a DC/DC stage.

A: Yes. Two conditions have to be met: the battery DC voltage range must fall inside the converter window, and the BMS must communicate over RS485 or CAN. The 160 kW inverter also speaks Modbus TCP/RTU and CAN 2.0, and the 30 kW bidirectional inverter adds Ethernet and WiFi. The 30 kW unit accepts lithium, lead-acid, sodium-ion and flywheel storage. Send the BMS communication document with the enquiry and the mapping is checked before the order is confirmed.

A: The microgrid hybrid inverter, because MPPT is built in. It accepts 250–1000 V PV input across 1 to 10 trackers depending on model, and maximum PV power exceeds the AC rating — the 500 kW unit takes up to 825 kW of modules. That oversizing is normal for DC-coupled designs, since the array rarely reaches nameplate output. For a retrofit where PV already has its own inverter, use the PCS or the 160 kW inverter on the AC bus instead.

A: The PCS and the microgrid hybrid inverter both sustain 110% continuously and 120% for one minute. The 160 kW inverter carries 176 kVA long-term at 1.1× and 1.5× for ten seconds. The 30 kW bidirectional inverter has a staged curve: 110–120% for ten minutes, 120–130% for one minute, 130–150% for 200 ms and above 150% for 100 ms — useful where motor starting current has to be covered off-grid.

A: Only the 160 kW inverter, rated IP66 with a −25 °C to +60 °C range and flat, vertical or wall-mounted installation. The PCS is IP21 and the microgrid hybrid inverter and 30 kW bidirectional inverter are IP20 — all three need an indoor room, a container or an outdoor cabinet.

A: The microgrid hybrid inverter integrates the transfer switch and maintenance bypass, so it runs off-grid without extra hardware, handles 100% unbalanced load and controls diesel generator load rate through a dry contact. The 160 kW inverter has a stand-alone mode with VSG control, so it forms the grid rather than following it. The 30 kW bidirectional inverter operates off-grid with up to ten units in droop-control parallel and takes an optional smart transfer switch for automatic backup. The 500/630 kW PCS is a grid-tied unit with LVRT and HVRT and is not intended for stand-alone operation.

A: It depends on the destination market. The PCS carries EN 50549-1 for the EU, GB/T 34120 and GB/T 34133 for China and PTPiREE Rev 1.2:2024 Type B for Poland. The 30 kW bidirectional inverter is certified to UL 1741 SA, IEEE 1547, Rule 21 and UL 9540A for North America. The microgrid hybrid inverter holds NRS 097-2-1:2024 for South Africa and ASGC for Australia. The 160 kW inverter covers both EN 50549 and UL 1741 with IEEE 1547.

A: Cell format. The 700 W series uses 210 mm half-cells in a 2384 × 1303 mm frame at 38 kg, with efficiency from 22.54% to 23.18%. The 630 W module uses 182 mm half-cells in a smaller 2382 × 1134 mm frame at 33 kg, and reaches a higher 23.32% efficiency. The larger panel suits ground-mounted and utility-scale arrays where module count matters; the 630 W is easier to handle on commercial rooftops and inside solar containers.

A: Minimum order is one unit for converters and one pallet for modules. Samples ship in 7–15 working days and volume orders in 25–35 working days after deposit. Nameplate and packaging can be customised from 10 units; enclosure colour and HMI language from 50 units. Lead time is confirmed against the certificate set required, since country-specific grid approvals can extend the schedule.