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High leakage currents are possible due to contribution from simultaneous multiple AC input connections. Earth
ground connection is essential before connecting the ac source to the shelf. This connection must be achieved by
ensuring that the C.O. grounding stud is connected as shown in the Installation Section, or quality service
personnel shall ensure that the rack system is bonded per the provision below.
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In enclosed equipment cabinets, the CPS6000 mounting framework must be connected directly to the cabinet ac
service ground bus. For applications in huts, vaults, and central offices, the CPS6000 mounting framework must be
connected to the system integrated ground grid.
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Installing fuses or circuit breakers not specified for use in these distribution modules may result in injury to service
personnel or equipment damage. Use only replacement parts listed in this manual and on the equipment drawings.
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The telecom-type (e.g., GMT type) fuses can produce sparks during interruption or clearing of a fault on a high
energy circuit. Use only fuses provided with safety caps for this type of circuit. Installing telecom-type fuses not
equipped with safety caps may result in injury to service personnel.
While installing batteries, follow all safety precautions outlined in the appropriate battery product manuals.
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The terminal block for the GMT fuse panel is rated Afor 20A with factory wiring, but only 10A for field installation.
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All ac inputs for the J85470S1 L12 and L13 must be conneActed to maximum 60A panel board breakers from
maximum two ac conduit connections.
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CPS6000 outputs are not connected to earth. Earthing of rectifier outputs may be performed externally to the shelf
at a "ground window" or "mesh ground". Connection of Ringer tip outputs to CPS6000 Battery or Ground is
optional via Ringer Chassis jumper or external connection.
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The QS841 has an IEEE 802.3 compliant 10Base-T network interface with a grounded connector shield.. Where intra
building lightning surge protection is of concern, ABB Power recommends the use of a shielded cable, where both
ends are tied to ground. This cable must be supplied by the user. (example: CAT 5 E STP)
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