V-TAC VT-7787 LED Ceiling Light, 20 W 3000 K, 2130 lm, Black, 45 × 30 cm

Two interlocking rings instead of a shade

The VT-7787 is a ceiling fitting built from two unequal, overlapping circles: a larger and a smaller ring pass through one another at a single point, forming a figure that reads like links of a chain. Both hoops are black on the outside and closed on the inner and lower faces by a milky diffuser through which the light emerges. The body occupies 45 × 30 cm and stands 10.5 cm off the ceiling.

20 W, 2130 lumens, warm 3000 K

The built-in LED module draws 20 W and delivers 2130 lm — roughly 105 lm/W, a normal figure for a decorative fitting with a diffuser, where part of the output stays inside the cover. The 3000 K tone is warm and suits a living room or bedroom. For a room of 12–15 m² that is enough as the main light; in anything larger the fitting is better treated as one element to be supplemented with floor lamps.

Figures a datasheet usually leaves out

The fitting is registered in the European EPREL database under number 1522843, which makes data available beyond the usual specification. Colour rendering is Ra 80, with the R9 component (responsible for deep red) at 12 — low, which is the norm for Ra 80 sources and means red fabric or warm-toned timber will look less saturated than under CRI 90. Colour binning is SDCM 6, so visible differences in tone are possible between units placed side by side. The flicker metric PstLM is 1 and the stroboscopic effect SVM 0.9 — both within the EU limits in force since 2021.

Not dimmable, hard-wired

The manufacturer has declared in the EPREL register that the fitting is not dimmable — connecting a dimmer risks flicker or damage to the driver. The connection is L/N type, so the luminaire wires permanently into a 220–240 V / 50 Hz supply; standby draw is 0 W. The declared number of switching cycles exceeds 15,000 and the lumen maintenance factor at the end of declared life is 0.96 — the fitting loses very little brightness with age.

Mounting and rooms

The fitting mounts on the ceiling surface. IP20 protection assigns it to dry interiors — it suits neither a shower zone nor outdoors. It weighs 1.15 kg, no load for an ordinary ceiling. The black geometric form works well against a pale ceiling, where the contrast picks out the drawing of the rings; against a dark ceiling the fitting merges into the background and mainly the glowing hoops remain visible.

Specifications

• Manufacturer and code: V-TAC VT-7787 (SKU 7000)
• EAN: 3800157698856
• Type: LED ceiling light, surface mounted, integrated module
• Dimensions: 450 × 300 × 105 mm
• Power: 20 W
• Luminous flux: 2130 lm
• Efficacy: about 105 lm/W
• Colour temperature: 3000 K (warm white)
• CRI: Ra 80 (R9 = 12)
• Chromaticity: SDCM 6
• Flicker: PstLM 1; stroboscopic effect SVM 0.9
• Dimmable: no
• Supply: 220–240 V AC, 50 Hz, L/N connection; standby 0 W
• Energy efficiency class: F
• Switching cycles: over 15,000
• Lumen maintenance factor: 0.96
• Ingress protection: IP20 — dry interiors
• Colour: black
• Net weight: 1.15 kg
• EPREL registration number: 1522843
• Warranty: 2 years