1. Product Overview
Part No.3A98768G01 belongs to Westinghouse original WDPF DCS dedicated indoor short-range duplex multimode fiber patch cord, orange outer sheath design, compatible with 3A98764G series yellow outdoor field fiber cable to construct complete Westnet bus optical communication link for WDPF distributed control system. It is factory pre-terminated ST connectors on both ends, specially used for internal wiring inside central control cabinet, DPU rack and local I/O cabinet in thermal power & petrochemical plants. Original Emerson stopped brand-new OEM production permanently; available supply includes fully tested refurbished finished cables and authentic dismantled spare cables for on-site system maintenance, cabinet refit and spare replacement of legacy WDPF projects.
2. Technical Specifications
2.1 Optical Parameters
Fiber core: standard 62.5/125μm graded-index multimode fiber, nominal working wavelength 850nm, matches proprietary Westnet fieldbus communication protocol
Max valid transmission distance: ≤550m for indoor cabinet interconnection; passive optical transmission without external power supply
ST connector index: insertion loss ≤0.7dB, return loss ≥28dB, stable for long-term uninterrupted bus data transmission
Built-in anti-surge & anti-interference inner structure to restrain cabinet internal electromagnetic coupling interference
2.2 Mechanical & Environmental Specifications
Inner tensile layer: high-modulus aramid yarn for anti-pull and anti-bending during cabinet wiring rearrangement
Outer jacket: flame-retardant orange PVC sheath, thin-wall indoor customized formula, soft for dense wiring inside cabinet tray
Operating ambient temperature: 0℃ ~ +55℃ (installed status); storage temperature: -40℃ ~ +85℃
Working humidity: 5%~95% RH, non-condensing; comply with UL flame retardant & CE EMC industrial certification
2.3 G01 Version Feature
Base baseline version of 3A98768 series indoor fiber, fixed factory preset finished length without field cutting; integral overmolded ST connector end cap to prevent cabinet dust from entering fiber end face; distinct orange color differentiates from yellow outdoor 3A98764G cables to avoid misplug during maintenance wiring.
3. Core Function
Realize optically isolated bidirectional Westnet bus data transmission between DPU controller card slots and local rack I/O modules inside control room cabinet; isolate EMI interference from cabinet internal power modules, relay and frequency conversion equipment to avoid intermittent communication dropout of WDPF system; transmit real-time field acquisition analog/digital signals, control instructions and equipment fault alarm data.
4. Application & Supply Info
Exclusive indoor cabinet matching spare part for classic Westinghouse WDPF DCS system, widely applied for coal-fired power plant, cogeneration station and refining plant DCS daily overhaul & upgrade. Goods: warrantied refurbished cable + inspected original used spares; standard lead time: 2–4 weeks, urgent delivery available upon request; global shipment via DHL/UPS/FedEx international courier.
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