Technical data

June 2008
40-280
For more information visit: www.eaton.com CA08102001E
Adjustable Frequency Drives
40
SPA9000/SPI9000/SPN9000
Contents
Description Page
SPI Common DC Bus Drive
Products
Product Description . . . . . . 40-280
Application Description . . . 40-280
Features and Benefits . . . . . 40-282
Technical Data and
Specifications . . . . . . . . . . 40-282
Catalog Number
Selection . . . . . . . . . . . . . . 40-284
Product Selection . . . . . . . . 40-286
Dimensions . . . . . . . . . . . . . 40-289
Wiring Diagrams . . . . . . . . . 40-290
SPI9000 Products
Product Description
Eaton offers a comprehensive range of
Cutler-Hammer
®
common DC bus
drive products. The product family
covers a number of front-end units
and inverter units in the entire power
range from 1-1/2 to 2000 horsepower
at 460V and 690V. The drive compo-
nents are built on the SPX9000
technology.
Front-End Units
The front-end units convert a mains
AC voltage and current into a DC volt-
age and current. The power is trans-
ferred from the mains to a common
DC bus (and, in certain cases, vice
versa).
The SPA (active front-end) unit is a
bidirectional (regenerative) power con-
verter for the front end of a common
DC bus drive line up. An external LCL
filter is used at the input. This unit is
suitable in applications where low
mains harmonics are required.
The SPN (non-regenerative front-end)
unit is a unidirectional (motoring)
power converter for the front-end of a
common DC bus drive line-up. The
device operates as a diode bridge
using diode/thyristor components. A
dedicated external choke is used at the
input. The unit has the capacity to
charge a common DC bus. This unit is
suitable as a rectifying device when a
“normal” level of harmonics is
accepted and no regeneration to the
mains is required.
Inverter Unit
The SPI9000 Inverter Unit is a bidirec-
tional DC-fed power inverter for the
supply and control of AC motors. The
inverter is supplied from a common
DC bus drive line-up. A charging cir-
cuit is needed in case a connection
to a live DC bus is required. The DC
side charging circuit is integrated up to
75 kW (FR4 – FR8) and external for
higher power ratings (FI9 – FI14).
Application Description
The Cutler-Hammer common DC bus
product portfolio fulfills all solution
demands with a flexible architecture.
Front end units are selected according
to the level of harmonics and power
requirements. Typical drive system
configurations are illustrated in
Figures 40-17440-175.
Figure 40-174. SPN + Inverters
Low total mains power,
P
mains
P
INU
Suitable e.g. for small processing
line with un- and recoiler, em-stop
coasting
Figure 40-175. SPA + Inverters
Low harmonics, -P
mains
+P
mains/
P
mains
P
INU
Suitable for almost every application
2
3
Inverter
2
3
Inverter
2
3
Inverter
Non-regenerative
Front End
(SPN)
3
2
3
2
2
3
Inverter
2
3
Inverter
2
3
Inverter
Active
Front End
(SPA)