SLV Lighting transformers, ballasts
slv lighting transformers Application scope and context
Retail refits, galleries, and hospitality ceilings still carry legacy low-voltage circuits beside new LED runs. This category covers the ironless and iron-core gear that feeds those loads cleanly, with isolation to SELV where required and wiring windows that match European 230 V practice. Expect clear labels for input range (typically 220–240 V, 50/60 Hz), secondary ratings (e.g., 11.5–12 V AC/DC), thermal class, and torque—so ceiling drawings translate directly to site without phone calls at 2 a.m.
slv electronic ballasts Range and specifications
Fluorescent hold-overs in corridors and plant rooms demand predictable start and low flicker. Units are specified to IEC/EN 61347-2-3 (safety) and IEC 60929 (performance), with PF ≥0.95 and THD ≤10–15 % on professional lines. Start modes (warm/rapid), EOL protection, and lamp fault shutdown are documented; ambient −20…+50 °C is typical. EMC meets EN 55015 with immunity per EN 61547. Conductor windows usually 0.5…2.5 mm²; push-in blocks and printed strip lengths keep QA moving. Where control is needed, DALI-2 variants address per IEC 62386 and support corridor hold, run-on timers, and emergency inhibitions.
slv led power supplies Topologies, protection, and lifetime
LED gear lands as constant-current or constant-voltage blocks per IEC/EN 61347-2-13. High-efficiency PFC front-ends deliver PF ≥0.90; harmonic compliance aligns with EN 61000-3-2 Class C (>25 W). Surge paths are commonly 2–6 kV L-N / L/N-PE; specify Type 2 SPD upstream on mixed feeders. Ripple is controlled for low flicker (PstLM ≤1.0, SVM ≤0.4 achievable with matched drivers); min-level and fade curves are published for cameraed spaces. Thermal: keep driver Tc 10–15 K below rating; sealed housings list required free air volume. IP options run IP20 for voids to IP65/67 for canopies. Lifetime claims reference LM-80/TM-21 of paired sources; expect 50–100 kh L80 when Tc is respected.
slv constant voltage drivers Interfaces and wiring practice
CV blocks at 24 V and 48 V power strips and linear boards. Choose 48 V for long runs or feed both ends at 24 V to keep ΔV <3 % and hold CCT uniformity. Interfaces: DALI-2 DT6/DT8, 1–10 V (per IEC 60929 Annex E), and PWM/AM vendor profiles for deep dim. Publish loop length, copper gauge, and inrush (A/µs) per channel on the drawings; B-curve and AFDD circuits behave when diversity is engineered rather than guessed. Maintain SELV segregation in trunking; bond metallic profiles only where EMC policy demands it.
Applications, retrofit notes, and compatibility
- Legacy display circuits: specify slv halogen transformers with soft-start and short-circuit protection; confirm minimum VA to avoid lamp shimmer at low load.
- Maintenance corridors: fluorescent feeders stay online with hot-restrike ballasts while primary areas migrate to LED; keep EOL detection active to protect holders.
- Mixed panels: where VFDs share risers, route lighting feeders away from motor cables and bond gland plates 360°—most “flicker” tickets are EMC, not optics.
- Where tender text groups older iron-core gear as slv magnetic ballasts, verify temperature rise and mounting clearance; iron warms ceilings more than expected in tight voids.
- Deep dim scenes and theatre spill control benefit from slv dimmable power units with documented minimum stable level (≤1 %) and fade tables that match sensor timing.
Selection criteria for B2B buyers
- Load type and topology. CC vs CV, lamp vs LED, minimum load, and dim protocol.
- Electrical discipline. PF/THD limits, inrush per circuit, surge rating, isolation class, and SELV boundaries.
- Thermal and IP. Ambient, Tc placement, free-air spacing, and enclosure class; plan for sealed kits in damp zones.
- Control. DALI-2 (DT6/DT8) where addressability or tunable white is required; 1–10 V for simple rooms; phase-cut only for legacy lamps.
- Wiring windows. Conductor range, strip length, torque, and through-wiring limits—publish on the layout.
- Compliance. Cite IEC/EN references on each tag so FAT doesn’t stall.
Integration and field practice
Map driver inrush to breaker curves early; stagger start or pick soft-start variants on dense circuits. Hold DALI loop current ≤250 mA with ~20 % headroom and respect cable length/spur rules. On CV strips, label feed injection points; voltage drop masquerades as color drift in punch lists. For emergency, select drivers with changeover inputs and documented EM flux; central-battery lines want non-maintained compatibility confirmed on the sheet.
Advantages of working with Bankoflamps
We align driver/ballast topology, control protocol, surge class, thermal envelope, and wiring windows to your one-lines and room data sheets, then present live EU stock by warehouse before access nights are booked. Quotes typically return in about an hour with EAN/MPN, PF/THD, inrush, Tc limits, IP class, and accessory packs stated—so ratings don’t drift mid-phase. Your portal shows real-time lead times, shipment status, and downloadable price lists with validity dates; approved clients can use post-payment up to 30 days. We consolidate by floor/zone to cut freight and site sorting, and your account manager cross-checks breaker diversity, SPD policy, DALI budgets, loop length, and enclosure depth against the drawings—so cartons arrive lift-ready and crews commission once.