Power Supply Module Manufacturers ABB, Bailey Model(s) ABB Bailey Infi 90
ABB Bailey Infi 90 and Net 90
Additional Information Modular Power System III (MPS III) 48V @ 8.5A
Estimated Shipping Size Dimensions: 0.0" x 0.0" x 0.0" (0.0 cm x 0.0 cm x 0.0 cm)
Weight: 0 lbs 0.0 oz (0.0kg )
Power Supply Module

FEATURE
• Low-impedance busbar protection
• Stub and T-zone protection
• High functional reliability due to two independent measurement criteria:
- stabilized differential current algorithm
- directional current comparison algorithm
• Phase-by-phase measurement
• Reduced CT performance requirements
• High through-fault stability even in case of CT saturation
• Full solid-state busbar replica
• No switching of CT circuits
• Only one hardware version for
- 1 and 5 A rated currents
- all auxiliary supply voltages between 48 V DC and 250 V DC
- nominal frequencies of 50, 60 and 16.7 Hz
• Short tripping times independent of the plant’s size or configuration
• Centralized layout: Installation of hardware in one or several cubicles
• Distributed layout: Bay units distributed and, in the case of location close to the feeders, with short connections to CTs, isolators, circuit breakers, etc.
• Connections between bay units and central unit by fiber-optic cables
- maximum permissible length 1200 m
- for distributed and centralized layout
• fiber-optic connections mean interference proof data transfer even close to HV power cables
• Replacement of existing busbar protection schemes can be accomplished without restrictions (centralized layout) in the case of
substation extensions e.g. by a mixture of centralized and distributed layout
• Easily extensible

OTHER INFORMAITION
• The operator panel is designed for stationary installation on a planar surface, where the following conditions are fulfilled:
– no high explosive risks
– no strong magnetic fields
– no direct sunlight
– no large, sudden temperature changes
• Install the operator panel according to the accompanying installation instructions.
• Ground the operator panel according to the accompanying installation instructions.
• Only qualified personnel may install the operator panel.
• Separate the high voltage, signal and supply cables.
• Make sure that the voltage and polarity of the power source is correct before connecting the operator panel to the power outlet.
• Peripheral equipment must be appropriate for the application and location.
• In a Zone 2 environment, this equipment shall be installed in an enclosure that provides a degree of protection not less
than IP 54 or greater than IP 65 in accordance with IEC/EN 600079-0. The IP rating of the equipment is limited to the IP rating of the enclosure it is to be installed into.
• In a Zone 22 environment, this equipment shall be installed in an enclosure that provides a degree of
protection not less than IP 64 or greater than IP 65 in accordance with IEC/EN 600079-0.
The IP rating of the equipment is limited to the IP rating of the enclosure it is to be installed into.
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