TW Solar 640W N-Type Bifacial Glass-Glass Mono Silver photovoltaic panel
Product code: ME5308
The Tongwei TWMND 78HD 640 Wp PV module is a high‑efficiency, bifacial N‑Type half‑cell module designed for large utility‑scale installations. Thanks to its bifacial technology and dual‑glass construction, it delivers increased power generation, a low degradation rate and high reliability over a long service life.
Shipping costs are not included in the price.
Shipping costs are not included in the price.
Shipping & Returns
Master Energy | Master Investment Sp. z o.o.
1. Right of Return (14 Days)
Individual consumers (B2C) have the right to withdraw from the contract and return purchased items within 14 calendar days from delivery without stating a reason.
2. How to submit a return or claim?
- 📧 E-mail: pv@masterenergy.eu
- 📞 Phone: +48 884 570 201
- 🏢 Registered Address: Master Investment Sp. z o.o., Rondo ONZ 1, 00-124 Warsaw, Poland (VAT ID: PL7010345632)
3. Complete terms and conditions
Detailed freight information, pallet shipping methods, and B2B commercial terms are available at our dedicated information page:
Payment methods
Instant Payments
You can pay for your order immediately using any available payment method. All payment data is encrypted and secured by an SSL certificate.
- Credit & Debit Cards – Visa and Mastercard, processed securely by Stripe.
- Apple Pay – convenient digital wallet checkout in one tap on Apple devices.
- Google Pay – seamless payment with stored cards in Google Wallet.
- BLIK – 6-digit code authorization (available for Polish transactions).
- PayPo – buy now, pay in 30 days or in flexible installments.
- Klarna – buy now, pay in 30 days without extra fees.
- Instant Bank Transfer – automated bank transfer through PayU.
- PayPal – secure multi-currency payment directly from your PayPal account.
Traditional Payments
- Bank Transfer – direct wire transfer to our bank account. Proforma invoice and details are sent by email.
- Cash on Delivery – pay the courier upon package delivery (maximum 10,000 PLN per order).
Installments
PayU Installments – split your order into manageable monthly payments with an instant online application process.
Ask about the product
Administratorem danych osobowych jest Master Investment sp. z o.o.. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
Product features
Panel parameters
- Panel power 600-650 W
- Cell type TOPCon
- Bifacial Yes
- Glass-glass Yes
- Frame colour Silver
- Sales unit Single unit
- Module height over 200 cm
- Panel power [W] 640
- Module height [cm] 246.5
Description
The Tongwei TWMND 78HD module with 640 Wp power is a high-performance bifacial N-Type Half-Cell module designed for large commercial installations. Thanks to bifacial technology and dual glass construction, it offers increased power generation, low degradation rate, and high reliability over long-term use.
Tongwei Solar is a global manufacturer of photovoltaic modules and silicon cells, part of Tongwei Co., Ltd., a leading renewable energy company. The brand is renowned for advanced N-Type cell technology and high-quality standards certified by international ISO and IEC certificates.
Electrical parameters
- Maximum power (Pmax): 640 W
- Open circuit voltage (Voc): 57.4 V
- Short circuit current (Isc): 13.86 A
- Maximum power point voltage (Vmp): 48.22 V
- Maximum power point current (Imp): 13.28 A
- Module efficiency: 22.9%
- Operating temperature range: -40 °C to +70 °C
- Maximum system voltage: 1500 V DC
- Nominal module temperature (NMOT): 45 ± 2 °C
- Temperature coefficient of Pmax: -0.28%/°C
Mechanical parameters
- Cell type: N-type monocrystalline (TNC)
- Cell orientation: 156 (6 × 26)
- Module dimensions: 2465 × 1134 × 30 mm
- Weight: 33.8 kg
- Front glass: 2.0 mm AR heat strengthened
- Back glass: 2.0 mm heat strengthened
- Frame: anodised aluminium, silver colour
- Junction box: IP68, 3 bypass diodes
- Connectors: Stäubli PV-KST4-EVO2/xy_UR, PV-KBT4-EVO2/xy_UR
- Wind/snow resistance: 2400 Pa / 5400 Pa
Complete your installation
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