Line Power Requirements; System Power Dissipation - Keithley S535 Administrative Manual

Section 2: S535 site preparation and installation

Line power requirements

Nominal input line voltage: 100 VAC, 115 VAC, 220 VAC, 240 VAC (50 Hz, 60 Hz)
Short-circuit current rating: 5 kA
Power consumption: Rated at 2.4 kVA for each of the 2 kW power distribution units (PDUs)
PDU mains output connectors: Rated 100 VAC to 240 VAC, 50 Hz or 60 Hz, 10 A
Because systems with power consumption over 2.4 kVA must have two PDUs, most S535 systems
come with two PDUs installed (one in the front of the cabinet and one in the back).
Heat generation: Quiescent heat of 1720 BTU (1815 kJ) to maximum heat of 8191 BTU (8642 kJ)
Severe personal injury or death due to electric shock or electrocution or equipment damage
may occur if you do not have the correct circuit amperage.
S535 systems that are configured to operate between 100 VAC and 120 VAC must use a 20 A
circuit; systems that are configured to operate between 200 VAC and 240 VAC must use a
15 A circuit.

System power dissipation

The total power dissipated by the S535 depends on the type and number of instruments in the test
system. The power distribution units (PDUs) limit the incoming power to these instruments.
In systems with power consumption over 2.4 kVA, two PDUs are required. The PDUs are at the
bottom of the system cabinet (one in the front and one in the back). One PDU is connected to the
other PDU, which is then connected to the EMERGENCY OFF (EMO) circuit (see the figure in
distribution unit connections and power distribution basics
on the front panel of the system cabinet removes power to everything in the cabinet but the system
computer.
Though the PDUs ensure electrical safety and compliance to the required standards, they do not
prevent the system from overheating.
2-20
S535 Wafer Acceptance Test System Administrative Guide
(on page 4-9)). Pressing the EMO button
S535-924-01 Rev. B / January 2019
Power