For Cyprus boreholes where the water table sits 100 metres or deeper below ground — common across the Paphos uplands, the Famagusta interior, and the inland farming belt running through Nicosia and Larnaca districts — the Hybsun 4GPH11-175/38 is the depth specialist of the 4GPH 11 kW range. 175 metres of vertical reach at zero flow, 24 m³/h sustained at the rated 110 m head, with 38 m³/h peak flow at shallower lift. The 2-inch outlet is sized for the higher pressures that deep-well operation requires. Solar PV by day, 380V three-phase AC mains backup at night, automatic switchover.
✓ VAT included · Delivery in Cyprus
What It Is
All four 4GPH 11 kW variants share the same motor platform and controller. They differ in how the hydraulic envelope is shaped — flow versus head trade-offs around a fixed total power.
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump is configured for vertical reach without sacrificing flow rate. 175 m H.Max, 110 m H.Rated, with 24 m³/h sustained at the rated head and 38 m³/h peak at shallower lifts.
Compared to the 4GPH11-126/52 (which trades depth for high-volume flow through its 3-inch outlet), this model pushes lift capability 50% deeper at the cost of some peak flow. The 2-inch outlet is matched to the higher pressures this depth bracket generates.
Cyprus context: water tables across the Paphos uplands sit 80-130 m below ground. Famagusta interior boreholes commonly reach 100-150 m. Large estate properties in the Larnaca and Nicosia inland farming belt frequently draw from wells in this depth range. The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump covers that bracket precisely.
AISI 304 Stainless Steel Construction
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump has three stainless construction points explicitly identified on the unit: SS oil cylinder, SS outlet, SS connect.
Hybsun’s series-standard AISI 304 grade carries through the rest of the wet end: impeller, diffuser, multi-stage casing, jacket, wear ring, strainer. The shaft is AISI 431, the higher-grade stainless used for rotating components.
Why this matters more at depth: a borehole pump lifting water 100+ metres operates at higher internal pressures than a shallow well pump. Wet-end stress is correspondingly higher. AISI 304’s corrosion and abrasion resistance is what delivers the multi-year operating life that justifies the project economics at 11 kW commercial scale.
For Cyprus inland aquifers — which often carry calcium carbonate scale, occasional fine sand, and variable chloride content — this construction tier is the matched specification rather than an option.
Hybsun’s 4GPH 11 kW motor platform appears identically across the four 11 kW variants. The motor is an AC/DC brushless permanent-magnet synchronous design — see brushless DC motor architecture — accepting either DC PV input or three-phase AC input on the same windings.
The motor coils use centralized winding technology rather than conventional hand-wound coils. Machine-wound coils deliver tighter geometric tolerances, which translates to higher motor efficiency in continuous-duty operation. Over a 1,200-hour annual run cycle at deep-well power demand, those efficiency points compound into significant operating-cost differences.
Mechanical hardware: NSK Japanese-brand industrial bearings handle the continuous rotation under deep-well load. The shaft seal stack combines an alloy mechanical seal with a double water seal arrangement — keeping the unit fully waterproof and leak-tight at the higher internal pressures the depth operation generates.
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump ships with its matched hybrid controller in an IP65 outdoor enclosure.
Input handling on the controller: 380V three-phase AC mains or DC 500-780 V solar PV, with the controller automatically selecting the available source. MPPT tracking on the solar input optimizes yield across changing irradiance.
Maximum input current: 30 A. Smart-feature set that distinguishes deep-well unattended operation:
GPRS remote control via web or phone — meaningful when the wellhead is a 30-minute drive across the Paphos uplands or the Famagusta interior. Child Lock anti-stealing prevents unauthorized power-on at remote sites. Intelligent self-cleaning programs reverse cycles to clear fine sediment from the impeller. Wireless start/stop without float switch eliminates a common failure point on elevated tank installations.
At 11 kW power class, a battery-backed off-grid configuration requires 50-100+ kWh of storage capacity for meaningful night-time operation. The capital cost typically exceeds the pump’s own price by a multiple.
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump hybrid topology avoids that calculation entirely. 380V three-phase AC mains acts as the backup source, drawing from the grid only when solar PV cannot meet pump demand. Sunny daytime → solar covers the load. Night, dawn, sustained overcast → controller draws from three-phase mains.
Practical outcome: 24-hour pumping capability without battery investment. For Cyprus customers with three-phase service available at the wellhead (standard in most rural agricultural sites, available via EAC service upgrade where it isn’t), this is the architecture that keeps deep-well project economics realistic.
Soft start (no inrush current damage to the motor), dry-run protection (pump stops if there’s no water, auto-restarts 30 minutes later), over-voltage, under-voltage, over-current, overload, phase-loss, high working temperature protection, and adjustable speed (frequency conversion). The controller automatically starts and stops the pump based on solar conditions. For boreholes subject to occasional dry-out, the automated retry function removes the manual reset trip — the pump tests the well itself every 30 minutes.
Unboxing & First Look
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump kit is in a wooden box with the pump, the DC solar controller, and accessories. Here’s an unboxing walkthrough showing what’s in the box and how the kit goes together:
Video by Hybsun showing the standard submersible solar well pump kit. The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump ships in the same kit format with its model-specific pump.
Who Should Buy This
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump fits Cyprus deep-well buyer profiles:
The 4GPH 11 kW lineup has four variants sharing the same motor and controller platform — they trade flow for vertical reach across the operating envelope. Pick the variant that matches your borehole depth:
Hybsun’s PV sizing rule: ≥ 1.3 × pump power in solar capacity.
For the 11 kW 4GPH11-175/38 → minimum 14,300 Wp (≥ 14.3 kWp), typically 36-40 modern 400 W modules. Most deep-well commercial installs land in the 16-20 kWp range for headroom against Cyprus summer-heat de-rating and partial-shade conditions.
PV string voltage: the controller MPPT window is 500-780 V Vmp, with open-circuit voltage staying under 800 V. Deep-well sites are often remote, with PV arrays sited some distance from the wellhead — string voltage and cable cross-section need joint engineering to keep DC-side losses manageable.
For the Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump specifically, oversizing the array to 1.5× helps maintain MPPT stability in the upper half of the operating window — deep-well pumping benefits from steady motor speed, which benefits from steady MPPT input voltage.
Hybsun publishes a continuous performance curve for the Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump from 38 m³/h at zero head down to zero flow at 175 m H.Max. The table below transcribes that curve at standard head intervals — direct readings, not interpolations.
“Total dynamic head” = static water level depth + pipe friction losses + vertical rise to your discharge point. At deep-well operation, friction losses in the rising main matter more — a properly-sized 2″ main adds 8-15 m of effective head over a 100-130 m pipe run depending on flow rate.
“Total dynamic head” = static water level depth + pipe friction losses + vertical rise to your discharge tank. Pipe friction in the rising main adds roughly 5-10m to the effective head — the exact figure depends on pipe diameter, total run length, and number of fittings.
Translating those deep-well flow rates into Cyprus water-demand terms:
For an exact sizing calculation, send CGP Solar your static water level, expected drawdown, pipe run length, storage tank height, and daily water demand — we’ll work it out against the curve.
Three structural differences separate this pump from generic Chinese-market 11 kW submersibles:
Configured specifically for the depth-with-useful-flow envelope. Generic 11 kW pumps are usually either high-flow (large outlets, modest depth) or high-pressure (small outlets, extreme depth). The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump sits between — 38 m³/h peak with 175 m vertical reach. That envelope matches Cyprus inland aquifer conditions precisely.
Hybrid platform with three-phase backup. Single-source pumps (pure AC or pure DC) require either grid availability or battery investment. The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump handles both inputs on the same controller, switching automatically. For Cyprus deep-well sites where uninterrupted supply matters more than electricity cost minimization, this architecture is what makes the project work.
Full AISI 304 wet end matched to deep-aquifer water. Cyprus inland aquifers carry calcium scale, occasional fine sand, and variable chloride content. Generic mixed-metal construction degrades within years; AISI 304 handles those conditions across multi-year continuous duty.
Same rotating hardware quality as the rest of the Hybsun premium range: NSK industrial bearings (the Japanese-brand bearings used as a standard across continuous-duty pumping equipment) pair with an alloy mechanical seal, and a dual water seal arrangement keeps the pump body sealed against ingress over years of commercial submerged duty. Hybsun designs the platform around “the longer working life” — that’s the explicit design intent for the entire 4GPH lineup.
Direct-on-line motor startup at 11 kW would draw an inrush current spike of 50-65 kW momentarily — five times nominal power for fractions of a second.
At deep-well operation, that spike isn’t just an electrical event. The hydraulic shock propagates through the rising main, stressing the impeller stack, the shaft, and the bearings. Repeated startup cycles cumulate that stress. Soft-start ramps speed up gradually instead, eliminating the spike entirely. For 100+ m deep-well duty, soft-start is what extends pump life from years to decades.
On a deep well, drawdown to dry happens slower than on shallow boreholes — the larger water column buffers short-term demand spikes. But once a deep well is drawn down, recovery also takes longer.
The Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump controller handles this automatically: pump stops when intake supply fails, attempts a restart after 30 minutes. If the borehole has recovered, pumping resumes. If not, the cycle repeats every 30 minutes until the well refills. No service call required. No risk of running the impeller dry at 100+ m depth where pulling for repair is a significant operation.
Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump install runs 6-9 working days end-to-end — engineered project work at 11 kW commercial scale with the added complexity of deep-borehole deployment.
Stage 1 — site assessment (2-3 days). Verified well depth (we don’t take the customer’s estimate for deep wells — we measure), static and dynamic water levels, casing integrity through the full pump-set depth (deep wells have higher failure rates at the casing joints), borehole recharge testing for sustained 24-30 m³/h drawdown, three-phase AC mains capacity verification, PV array siting evaluation (16-20 kWp typical footprint).
Stage 2 — engineering & quotation (3-4 days). We size the solar array against operational water demand, calculate rising-main pipe diameter for the 100+ m vertical run to keep friction losses manageable, design the three-phase wiring, and coordinate the borehole capacity model against the published curve.
Stage 3 — install (1-2 days on site). Pump deployment on rising-main with safety cable through the 4-inch casing is more involved at 110+ m — typically 1-2 days for the lowering operation itself. PV array erection (1-2 days for 16-20 kWp). Three-phase controller mounting and dual-source commissioning (1 day).
CGP Solar handles end-to-end across Nicosia, Limassol, Paphos, Larnaca, and the Famagusta region.
CGP Solar specifies, supplies and installs the Hybsun 4GPH11-175-38 hybrid deep-well high-speed pump across all five districts — Nicosia, Limassol, Paphos, Larnaca, and the Famagusta region — as engineered project work.
Engagement scope: verified deep-well survey, casing structural assessment through full pump-set depth, three-phase electrical capacity confirmation, PV array sizing (typically 16-20 kWp), pump deployment on rising-main with safety cable, hybrid controller wiring to both solar and three-phase AC inputs, full commissioning under both power sources.
Deep aquifer + bright Cyprus sunshine + Hybsun 4GPH11-175/38 = 24 m³/h sustained from 100+ metres below ground, year after year, with three-phase grid backup as your night-time safety net.
Contact us today to schedule your personalised free consultation.
FAQ’s
Hybsun specifies H.Max 175 m, H.Rated 110 m, Q.Max 38 m³/h, Q.Rated 24 m³/h (the guaranteed minimum at the rated head). The performance curve is reasonably flat at the shallow end — 36 m³/h at 40 m head, 33 m³/h at 60 m. Then it drops faster as head increases: ~26 m³/h at 110 m (the curve reading at the rated point), ~16 m³/h at 150 m. For boreholes deeper than 175 m, step up to the 4GPH11-227/28 (227 m vertical reach). For shallower wells with higher flow needs, the 4GPH11-126/52 delivers 52 m³/h at 126 m H.Max with a 3-inch outlet.
The 4GPH5.5-120/38 reaches H.Max of 120 m. The 4GPH11-175/38 reaches 175 m. The difference matters: at 110 m head (the 4GPH11-175’s rated point), the 4GPH5.5 has already left its efficient operating zone. More fundamentally, 5.5 kW isn’t enough motor power to drive useful sustained flow at depths approaching 150 m. The 11 kW motor on the 4GPH11-175/38 maintains 16 m³/h at 150 m — about 96 m³/day on solar. A 5.5 kW pump at the same depth would deliver effectively zero useful flow. Rule of thumb: if your static water level is consistently above 80 m, the 4GPH5.5 is the more economical choice. If it sits 100-150 m deep, the 4GPH11-175/38 is the matched specification.
At deep-well operation, internal pump pressures run higher — a 100+ m vertical lift translates to ~10+ bar of static pressure plus dynamic loss. The 2″ outlet matches that pressure profile. A larger outlet (like the 3″ on the high-flow 4GPH11-126/52) would handle bulk volume better but isn’t matched to deep-well pressure operation. The deeper variants in the 4GPH 11 kW range (227 m and 480 m H.Max) use 2″ and 1.5″ outlets respectively for the same reason. For surface piping downstream of the wellhead: size for the actual sustained flow at your operating point (look up your depth on the table above), not for the headline Q.Max.
Sizing rule from Hybsun: PV array power needs to be at least 1.3 × pump rated power. For the 11 kW 4GPH11-175/38, that’s a floor of 14,300 Wp — about 36-40 modern 400 W modules. In practice most Cyprus deep-well installs land at 16-20 kWp because summer-heat module de-rating, partial-shade events, and end-of-life ageing eat into nameplate output. String voltage has to land in the controller’s 500-780 V Vmp window with Voc staying under 800 V, which works out to roughly 14-18 panels per string depending on the module model. For deep-well operation specifically, a slightly oversized array (1.5×) keeps MPPT input voltage stable in the upper half of the window — which keeps motor speed steady, which the wet end appreciates over multi-year service. CGP Solar sizes the array against your actual operational water demand rather than the headline minimum.
Hybsun’s standard 2-year manufacturer warranty. The pump series is CE-certified for EU/Cyprus sale. Hybsun’s manufacturing facility holds ISO 9001:2015 certification. The AC/DC hybrid controller carries an IP65 rating — dust-tight and pressurized-water-jet protected — suitable for outdoor weather-exposed mounting, pump-house installation, or industrial environment placement at commercial Cyprus sites.
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