ETA Systems PD620-6R Owner's Manual - Page 3

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The PD66 and PD620 are designed for use on Three Phase (3Ø) WYE 120/

208V 4-pole 5-wire electrical service. With the ability to operate on Single

Phase (1Ø) 120/240V 3-pole 4-wire electrical service, (easily configured

internally).

DO NOT connect high voltage leg of DELTA type systems (the higher voltage

will damage sensitive equipment connected this way)—see NOTE below.

The PD66 can provide up to 140 amps total, 40 amps on one leg, 50 amps

each on remaining two legs (3Ø WYE 120/208V hook-up), OR *70 amps per

leg (two legs) (1Ø 120/240V hook-up <internal configuration>).

The PD620 can provide up to 120 amps total, 40 amps per leg (three legs)

(3Ø WYE 120/208V hook-up), OR *60 amps per leg (two legs) (1Ø 120/240V

hook-up <internal configuration>).

* When using Single Phase, incoming supply lines MUST be sized to accomodate

20 amps more per leg than highest per leg rating (PD66-70 amps, PD620-60

amps).

NOTE: Delta systems have one (1) leg at a higher potential (208 Volts) in reference

to neutral, sometimes termed "Crazy Leg", or "High Leg" typically the orange color

is reserved for designation of this line.

Do not conect this leg into the PD66 or PD 620.