8
Power Configuration
This chapter discusses the configuration of primary power within SH043-series
cabinets. Additional information on power configuration options can be found in
Section 1.3.
8.1 General Considerations
WARNING
While working in the cabinet interior, ac power must be removed from
cabinet components. Failure to do so may result in personnel injury as a
result of electric shock.
Prior to performing any of the procedures in this chapter, remove ac power from
the cabinet components. If the cabinet is installed and operating, spin down all
disk drives and halt all tape drives in the cabinet. Switch the circuit breaker on
the front panel of the cabinet’s cable distribution units (CDUs) to the
(OFF)
position.
8.2 Cable Distribution Units
The 887–E CDU is used with SH043-series cabinets and is designed for both
230 volt, 50 Hz and 120 volt, 60 Hz applications. The unit provides ac power
to the cabinet’s components via 12 Molex output connectors on its rear panel.
Two International Electrotechnical Commission (IEC) output connectors are also
provided for utility purposes.
WARNING
If the leakage current of the cabinet is above 3.5 mA after installation,
Digital recommends that power cables with industrial type B, IEC 950
connectors be installed. Failure to reduce the leakage current can result
in equipment performance degradation and personnel injury due to
electric shock.
Table 8–1 lists the power cables used with the 887–E CDU.
Power Configuration 8–1
