Name: PeakArray 210R-78 N-type TOPCon bifacial module
Brand: PeakArray
SKU: 210R-78

Full electrical and mechanical data

Specifications at STC

Numbers below are taken from the current datasheets at electrical rating. Where a value differs between formats it is shown per format — nothing here is rounded up.

Parameter	182R-66 · 635 W	210-66 · 730 W	210R-78 · 740 W
Max power (Pmax)	600–635 W	700–730 W	715–740 W
Power steps	8 bins, 5 W	7 bins, 5 W	6 bins, 5 W
Module efficiency	23.50 %	23.50 %	23.00 %
Open circuit voltage Voc	50.60 V	49.80 V	58.21 V
Short circuit current Isc	15.95 A	18.56 A	16.19 A
Voltage at Pmax	42.30 V	41.70 V	49.33 V
Current at Pmax Impp	15.02 A	17.52 A	15.00 A
Isc with +10 % bifacial gain	17.53 A	20.42 A	17.80 A
Pmax temperature coefficient	−0.29 %/°C	−0.30 %/°C	−0.29 %/°C
Voc temperature coefficient	−0.24 %/°C	−0.25 %/°C	−0.25 %/°C
NMOT	45 ± 2 °C	44 ± 2 °C	44 ± 2 °C
Max system voltage	1500 V DC	1500 V DC	1500 V DC
Series fuse rating	30 A	30 A	35 A
Dimensions	2382 × 1134 × 30 mm	2384 × 1303 × 33 mm	2465 × 1303 × 33 mm
Area	2.701 m²	3.106 m²	3.212 m²
Weight	33.5 kg	37.5 kg	38.5 kg
Cell type / count	182 × 105 mm · 132 (6×11+6×11)	210 × 105 mm · 132 (6×11+6×11)	210 × 91 mm · 156 (6×13+6×13)
Glass	2.0 mm anti-reflective tempered front + 2.0 mm tempered rear (double glass)all three formats
Frame / junction box	Anodised aluminium alloy · IP68 junction box, 1500 V DC · MC4-compatible connectorsall three formats
Operating temperature	−40 °C to +85 °Call three formats
Packing	37 pcs/box × 20 boxes · 1270 kg gross/box	33 pcs/box × 22 boxes · 1280 kg gross/box	33 pcs/box × 22 boxes · 1327 kg gross/box
Load per 40 ft HQ	740 pcs · ≈470 kW · 25.4 t	726 pcs · ≈530 kW · 28.2 t	726 pcs · ≈537 kW · 29.2 t

Power tolerance is positive. Modules are shipped at or above the nameplate bin — you are never billed for a watt you did not receive. Test reports and the batch COA are issued with the shipment.

The part most suppliers skip

String and inverter fit

High-current modules quietly break designs. The number that matters is the inverter's maximum DC input current per MPPT, checked against module Isc — not Impp — multiplied by the number of parallel strings. Bifacial gain adds roughly another 10% on top. We check this against your inverter datasheet before quoting, not after delivery.

Format	Isc at STC	Isc + 10 % bifacial	One string	Two strings in parallel	Minimum per-MPPT rating
182R-66	15.95 A	17.53 A	17.5 A	35.1 A	36 A if double-stringed
210R-78	16.19 A	17.80 A	17.8 A	35.6 A	36 A if double-stringed
210-66	18.56 A	20.42 A	20.4 A	40.8 A	41 A if double-stringed

Read this before you copy a string design across formats. On an inverter limited to 30 A per MPPT, all three formats must be single-stringed once bifacial gain is counted — double-stringing overruns the input. That is workable, but it means more MPPT channels for the same DC size, so the cheapest module per watt can end up the more expensive system. The 210-66 format is the most demanding: it needs 40 A+ per MPPT to be double-stringed at all. Send us your inverter make and model and we will tell you which format actually costs you less installed.

Voc and cold-weather strings

210R-78 runs 58.21 V per module (Voc coefficient −0.25 %/°C). On a 1100 V system corrected to −10 °C the module sits at 63.3 V, which caps the string at 17. At −20 °C it is 16. Most Gulf and West African sites design to −5 to 0 °C and can take 17; if your design ambient is lower, tell us and we will run it again rather than guess. Tell us your site's design ambient temperature and we will send the string length, not a guess.

Snow and wind load

The formats pass 2400 Pa wind and 5400 Pa snow under IEC 61215. Those are test-pass values, not design allowances. On large formats in snow load above 1.5 kN/m², have a structural engineer verify purlin spacing — we will supply the load data sheet for it.

Handling and breakage

33.5 kg is a two-person carry. 37.5–38.5 kg on a 3.1–3.2 m² panel needs suction lifters on rooftops. Larger formats also carry a higher transit breakage rate, so we cap it contractually at ≤0.3% with free replacement of the excess.

The anti-dust frame is a real gain, not a brochure claim. On the 182R format, the raised edge profile reduces water-borne dirt accumulation at the short edge. Independent field results for this class of frame sit around 1–3% additional yield, and the value depends on rainfall, tilt and dust type. In arid, low-rainfall sites with soiling losses, that is free yield you would otherwise lose every year of a 30-year warranty — it does not move the payback period much, and we will not pretend it does. It is also the reason we lead with this format in the Gulf.