Rockwell Automation 1336F PLUS II User Manual - Firmware 1.xxx-6.xxx - Manual (Page 13)

Installation/Wiring 2–3
AC Supply Source 1336 PLUS II drives are suitable for use on a circuit capable of deliv-
ering up to a maximum of 200,000 rms symmetrical amperes, 600
volts. Refer to Table
2.A for actual interrupt ratings based on fuse or
circuit breaker choice.
Unbalanced Distribution Systems
This drive is designed to operate on three-phase supply systems
whose line voltages are symmetrical. Surge suppression devices are
included to protect the drive from lightning induced overvoltages
between line and ground. Where the potential exists for abnormally
high phase-to-ground voltages (in excess of 125% of nominal), or
where the supply ground is tied to another system or equipment that
could cause the ground potential to vary with operation, suitable iso-
lation is required for the drive. Where this potential exists, an isola-
tion transformer is strongly recommended.
Ungrounded Distribution Systems
All 1336 PLUS II drives are equipped with an MOV (Metal Oxide
Varistor) that provides voltage surge protection and phase-to-phase
plus phase-to-ground protection which is designed to meet IEEE 587.
The MOV circuit is designed for surge suppression only (transient
line protection), not continuous operation.
With ungrounded distribution systems, the phase-to-ground MOV
connection could become a continuous current path to ground.
Energy ratings are listed below. Exceeding the published phase-to-
phase or phase-to-ground energy ratings may cause physical damage
to the MOV. Refer to page A-1.
!
ATTENTION: To guard against personal injury and/or
equipment damage caused by improper fusing, use only the
recommended line fuses specified in
Table 2.A .
1 2 3 4
Joules (J)
Ground
Three-Phase
AC Input
T
S
R
Joules (J)
Joules (J)
Joules (J)
Frame Reference
Device Rating (V AC)
Phase-Phase Total
Phase-Ground Total
B-C
240/480 600
280J 320J
360J 410J
A
240 480/600
160J 320J
220J 380J
D-G
240/480 600
280J 300J
360J 370J
Phase-to-Phase MOV Rating
Includes 2 Phase-Phase MOVs
Phase-to-Ground MOV Rating
Includes Phase-Phase & Phase-Ground MOVs