Marine Electrical
& Control Parts Supplier

What a class surveyor looks at on the switchboard is what has to match on the order.

Protection settings, the trip unit fitted and the changeover to the emergency switchboard are looked at during survey, so those items have to be right rather than merely equivalent. The emergency switchboard is also an order in its own right: its breakers, its shore connection arrangement and its blackout recovery sequence rarely repeat the main board. Photos of the device plate, the panel, the old part or the wiring drawing can be enough to begin cross-checking when the part number is incomplete. There is a longer walk-through in the RFQ evidence guide and in the marine electrical sourcing guide, and the RFQ evidence checklist lets you tick the fields off before sending. For a motor, the motor nameplate reader explains the IP code, mounting, thermal class, duty and frame on the plate and lists what is still missing. Where the bearings of a motor or an alternator are regreased, the bearing grease quantity calculator gives the grease to add from the outside diameter and the width of each bearing, and the gun strokes. A conductor sized in AWG converts to mm2 in the wire size converter, and a Pt100 or thermocouple reading checks out in the Pt100 and thermocouple reader. A tube lamp code such as T8 36W/840 G13 is taken apart by the lamp code reader. An Ex marking such as II 2G Ex db eb IIC T4 Gb on a motor, a luminaire or a junction box is read by the Ex marking reader, and an IP code such as IP66/IP67 by the IP code reader. For a cable gland, the thread identifier tells an old PG thread from the metric M × 1.5 thread that replaced it. For the cable itself, the marine cable designation reader decodes NEK 606 letters such as BFOU(i), and the fuse link reader the class letters and the screw fuse colour code. An industrial plug or socket such as 32 A 3P+E 3h, on shore power, a deck outlet or a reefer container, is read by the IEC 60309 plug and socket reader: the earth position against the keyway gives the supply. A miniature circuit breaker marked C16 6000 3 is read by the circuit breaker marking reader: the letter gives its instantaneous tripping band in amps. A contactor labelled AC-3 9 A 400 V with a 230 V coil is read by the contactor marking reader, which also explains its terminal numbers, A1-A2, 13-14 and 95-96, and reads an overload relay's trip class and setting range. A solenoid valve coil labelled 24 V DC 8 W ED 100 % is read by the solenoid valve coil reader, which also tells the plug form from the spacing of its contacts. The device numbers on a generator protection relay or a single-line drawing are decoded by the protection device number reader, and a vector group on a transformer rating plate by the transformer vector group reader. Where the board runs at a low cos phi, the power factor correction calculator gives the capacitor kvar to raise it, the line current before and after, and the capacitance per phase of the bank in delta or star. The tools for electrical spares are also gathered on one view of the measurement tools page.