APC AP9621 User Manual download pdf (Page 10)

CHAPTER 2: BASICS

Product Overview

Front View Component Identification

Figure 2: AP9621 / Front View and Side View

Figure 3: SYTF2 / SYTF2J / SYTF3 / SYTF3J

Front and Side View

Rail Cleats : Two cleats (one on each side) of

the Step-Down Transformer engage with the rack

mounting rails to secure in the equipment rack (see

Figures 2 and 3).

Mounting Flanges : Two mounting flanges

(Figure 2) secure the Step-Down Transformer in

the rack.

Front Bezel : A bezel (see Figures 2 and 3)

covers the front of this Step-Down Transformer.

The bezel is removed during the installation for the

SYTF2, SYTF2J, SYTF3 and SYTF3J models.

Fans : Two fans (see Figure 4) on the front of the

Step-Down Transformer circulate airflow and cool

the unit. The redundant fan will not operate unless

the internal temperature of the unit becomes 100 °C

or failure of the main cooling fan.

Figure 4: SYTF2 / SYTF2J / SYTF3 / SYTF3J

Rear View Component Identification

Figure 5: AP9621 / SYTF2 / SYTF2J

Rear View

Figure 6: SYTF3 / SYTF3J

Rear View

Input Wiring : Provides access to wiring

terminal blocks for hard wiring the input (see

Figure 5). An input power cord plugs into an outlet

receptacle for cord connected installations (see

Figure 6).

Input Circuit Breaker : The input circuit breaker

(see Figures 5 and 6) protects the product and load

equipment from extreme overloads.

Power Distribution Unit (PDU) : Plug load

equipment into the appropriate PDU receptacle (see

Figures 5 and 6).

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APC AP9621 User Manual Page 10