Martindale Electric PD230SRD Instruction Manual page 6

Proving units
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PD440S / PD690S
The PD440S and PD690S output a fixed AC voltage for 5s before
the output voltage is reduced to 0V and the terminal output goes
into low impedance mode.
The PD440S fixed output voltage is 440V AC 50Hz nominal.
The PD690S fixed output voltage is 690V AC 50Hz nominal.
PD230SRD / PD440SRD / PD440SRDX / PD690SRD
The output voltage can be set to be to AC or DC mode using the
AC/DC output selection push button. The output voltage reduces in
steps over a period of 10s.
For example, the PD230SRD outputs voltage in the following steps:
230V for 4s, 120V for 2s, and 50V for 4s before the output voltage
is reduced to 0V and the terminal output goes into low impedance
mode.
Product
PD690SRD
PD440SRD /
PD440SRDX
PD230SRD
PD690S
PD440S
4
Output
voltage step
down
690
440
230
690
440
NO LOAD output voltage step
(50Hz nominal AC V / DC V)
440
230
230
120
120
50
120
50
50

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Pd440sPd440srdPd440srdxPd690sPd690srd

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