Chapter 6: GP
SC9000 EP medium voltage drives IB020001EN—February 2016 www.eaton.com 25
Chapter 6: GP
Purpose
This chapter explains the differences between the SC9000
EP and the SC9000 GP. It does not cover all possible
contingencies, variations, and details that may arise during
installation, operation, and maintenance of this equipment.
Introduction
The Eaton SC9000 GP provides adjustable frequency control
and protection of medium voltage AC motors and equipment
rated at 4160 V. The design and performance of the GP meet
or exceed UL 347A, NEMA ICS6, and IEEE 519 standards.
The GP is offered in a front accessible, single structure with
modular enclosures, and provides simple, easy installation
with its back or either side against the wall. The GP allows
customers to use their existing main contactor or breaker to
keep cost at a minimum.
Customer supplied power
Input contactor and fuses
●
The VFD shall be supplied with 4160 V (±10%),
three-phase, 60 Hz (±5%) power with 50 kA maximum
fault current
●
Customer shall provide dedicated fused contactor with
isolation switch or power circuit breaker as feeder
●
Customer shall provide dedicated fused contactor with
isolation switch rated to protect the VFD from specified
short-circuit levels
●
Incoming line overload protection required to meet UL
standard to include voltage phase balance protection
●
Fuses shall be current limiting type 50 kA,
maximum 200E
●
If power circuit breaker is provided instead of fused input
contactor, fuses must be installed in the system between
the breaker and the drive or added to the drive
Control power
●
Three customer supplied control power circuits shall be
provided to supply 120 Vac. One is for drive control, one for
cooling the inverter enclosure, and one for cooling the
transformer enclosure
●
Each circuit shall be 15 A 120 Vac source. See schematic
for connection location and terminals
Feeder I/O requirements
●
Contactor/breaker closed input (MCR)
●
Contactor/breaker closed feedback (normally open)—
aux contact
●
Breaker open command if breaker supplied (for latched
contactors, breaker trip coil)
Control I/O requirements
●
Customer supplied 'Pre-Charge' contacts
When troubleshooting with 120 Vac applied, this pre-charge
circuit generates medium voltage when the 'Pre-Charge'
contacts are closed.
Specifications
Table 9. GP Specifications
1
With fused income line else 10 kA.
Table 10. GP power specifications
Description Value
Power rating 100–1000 hp (75–750 kW)
Input voltage rating 4160 V
Input frequency 60 Hz, ±5%
Input short-circuit current withstand 50 kA rms sym
1
Basic impulse level 30 kV (option 60 kV)
Input power circuit protection Customer supplied
Output voltage 0–4160 V
Number of inverter IGBTs 12
IGBT PIV rating 6500 V
Number of rectifier devices (diodes) 24
Diode PIV rating 4000 V
Cooling Air cooling
Voltage class
4160
Drive rating (A) 13 19263238445157637689101114124
Drive output (kVA) 91 137 183 228 274 317 367 411 454 548 641 728 821 893
Nominal hp 4160 V 100 150 200 250 300 350 400 450 500 600 700 800 900 1000
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