Instruction manual – AP901S Arc Protection Unit
6 (43
)
A1027A
2
G
ENERAL
AP901S is a sophisticated micro-processor based arc flash protection unit including complete
self-supervision functionality. It is designed to minimize the damage caused by an arcing fault
(arc flash) by tripping the circuit breaker sourcing the fault current. The AP901S complete
system self-supervision function provides the highest level of dependability by continuously
monitoring all internal system functions along with external connections.
AP901S is designed according to the latest protection relay standards and is hence suitable
for installations in rough environments, such as utility, traditional or renewable power plants,
off shore, marine, oil and gas, mining, steel or any other heavy industry applications and as
well commercial and institutional electrical systems. AP901S is suitable for either medium
voltage or low voltage switchgear and motor control centre applications in both new and retrofit
installations.
2.1
A
RC PROTECTION UNIT
AP901S
FEATURES
AP901S is a multipurpose arc flash protection unit and can be applied for variety of applications
that requires a large number of data communication. AP901S can be used as a stand-alone
unit or as part of a more complex arc protection system through the binary bus. Main features
of AP901S, see Figure 2-1:
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80-265Vac/dc auxiliary power supply or optional 18-72Vdc power supply
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4 arc point sensor channels
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6 binary inputs (nominal voltage of 24 or 110 or 220Vdc)
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3 normally open trip relay outputs (direct trip circuit rated)
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3 binary outputs (24Vdc)
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1 system failure relay output
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17 Indication LEDs
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Push-button
Summary of Contents for AP901S
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