Bently Nevada 3500/15-05-05-CN Universal AC Power Supply Module

Technical Specifications
– Input range : 90–265 Vac rms, 47–63 Hz; also 120–340 Vdc
– Nominal output : 24 Vdc ±1 %, 5 A, 120 W
– Hold-up time : >20 ms at 115 Vac / full load
– Efficiency : >82 % @ 230 Vac, typical
– Power factor : >0.98 (active PFC)
– Inrush current : <20 A peak cold start
– Ripple & noise : <50 mV pp (20 MHz BW)
– Isolation : 1 500 Vac input-to-output, 1 500 Vac input-to-ground
– Protection : overload, short-circuit, over-voltage, thermal shutdown with auto-recovery
– MTBF : >250 000 h @ 45 °C per MIL-HDBK-217F
– Operating temperature : –40 °C to +70 °C full power
– Storage temperature : –40 °C to +85 °C
– Humidity : 5 %–95 % non-condensing
– Shock / vibration : 15 g half-sine 11 ms; 2 g sinusoidal 5–500 Hz operational
– Enclosure : IP20 front, UL 94 V-0 polycarbonate, flame-retardant
– Dimensions : 120.7 mm × 50.8 mm × 251.5 mm (4.75″ × 2.0″ × 9.9″)
– Weight : 1.39 kg (3.06 lb)
– Agency approvals : CE, UL/cUL Listed (UL 508), CN Ex Zone 2, RoHS

Category: Bently

Description

Functional Highlights
– Dual redundancy – two CN modules share load current; if either fails the second instantly assumes 100 % power without rack interruption
– Hot-swappable – insertion/extraction under power without disturbing field wiring or measurement channels
– Front LED bar-graph – indicates input presence, output healthy, fan status and thermal reserve at a glance
– Remote sense pins – compensate for up to 0.5 Vdc drop on rack back-plane for precise 24 V delivery
– Built-in OR-ing diodes – eliminate external blocking diodes when paralleling supplies
– Health reporting – power-good discrete and 3500 rack-resident temperature/fan data accessible via Modbus, Ethernet or OPC gateways
– Soft-start & current fold-back – prevents nuisance tripping of upstream breakers during rack power-up

Application Scenarios
– Coal-fired and combined-cycle turbine halls – powers vibration, eccentricity and valve-position monitors inside TSI cabinets
– Petrochemical ethylene and LDPE plants – redundant pair ensures 24/7 protection of multi-stage hyper/compressors
– Offshore drilling platform gensets – certified for saline, vibration-rich atmospheres
– Cross-country gas-pipeline compressor stations – meets API 670 hot-swap and redundancy clauses
– Steel mill blast-furnace blowers – withstands dust, 70 °C ambient and heavy magnetic fields
– Wind-turbine test stands – wide input range accepts both 115 Vac lab and 230 Vac field mains
– Refinery catalytic-reactor recycle compressors – CN Ex approval allows direct mounting in Zone 2 junction boxes

Installation & Maintenance
Slides into the two left-most half-height slots of any 3500 rack; captive screws provide chassis earth bond. Auto-ranged input removes voltage-selector errors. A quick-disconnect terminal block accepts 12 AWG–2.5 mm² stranded wire. Internal long-life ball-bearing fan is field-replaceable in <2 min without tools. Predictive fan-end-of-life alarm gives 30-day advance notice via rack alarm relays and HMI.

Compatibility
Fully backward-compatible with all 3500/05, 3500/20, 3500/22M, 3500/25, 3500/32, 3500/33, 3500/40M, 3500/42M, 3500/44M, 3500/45, 3500/46M, 3500/50 and 3500/60 series monitors; no firmware dependencies.

Ordering Reference
3500/15-05-05-CN – Universal AC, 24 Vdc, 5 A, CN Ex Zone 2, UL, single module
3500/15-05-05-CN-R – Same as above, factory-configured left/right redundant pair shipped with load-sharing cable kit

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