Instruction Bulletin
Instructions for Installation,
Page 2
Effective: July 2016
Operation and Maintenance of the
SL800 Classic 7.2 Kilovolt, 720 Amp. Vacuum Contactor
For more information visit:
www.eaton.com
IB48082
DESCRIPTION
The
SL800 Classic
vacuum contactor is a 7.2kV, 720 amp contactor designed for starting and controlling
three-phase, 50 or 60 Hz AC motors. Horsepower ratings are shown in Table I. Motor full load current should
not exceed the contactor current rating.
The short-circuit capacity of the power system may exceed the interrupting capacity of the contactor. The
contactor should have short-circuit protection with current-limiting fuses as specified for the application.
Substitute fuses should not be used without proper authorization by the factory. Ratings for the contactor are
shown in Table II.
TABLE I. APPLICATION DATA
Range of
System
Voltage
Horsepower Ratings
Transformer
Switching
Rating
(kVA)
Interrupting Capacity (rms)
Symmetrical at Nominal Utilization
Voltage
Synchronous
Motor
Induction
Motor
Fuses
(kA)
Controller
(kVA)
0.8 PF
1.0 PF
2200-2500
3000
3500
3000
250
50
200,000
3800-5000
5000
6000
5000
4500
50
350,000
6200-7200
8000
10000
8000
6000
50
570,000
TABLE II. RATINGS
Maximum Interrupting
Current (3 Operations)
12,500A
Control Voltages
AC
110/120, 220/240 Volts
Rated Current
720 Amperes
50/60 Hz
Maximum Rated Voltage
7,200 Volts
DC
125 Volts
Making/Breaking Capacity
Control Circuit Burden (Rated Volt)
AC4-Make
8,000 Amperes UL
7,650 Amperes IEC
Closing
2600 VA
AC4-Break
6,400 Amperes UL
6,120 Amperes IEC
Holding
80 VA
Short Time Current
Auxiliary Contact Rating
30 Seconds
4,800 Amperes
Voltage (Maximum)
600 Volts
1 Second
12,000 Amperes
Continuous Current
10 Amperes
7.8 Milliseconds
89.2 kA
Making Capacity (AC)
7200 VA
Mechanical Life
250,000 Operations
Making Capacity (DC)
200 VA
Electrical Life
200,000 Operations
Breaking Capacity (AC)
720 VA
BIL
60kV
Breaking Capacity (DC)
200 VA
Dielectric Strength (60 Hz)
18.2 kV (1 minute)
Latch (when specified)
Closing Time
80 Milliseconds
Mechanical Life
250,000 Operations
Opening Times
50 to 330 Milliseconds
Dip Switch Selectable
Refer to Table IIIb
Trip Voltages (DC)
24/48/96 Volts
Trip Voltages (AC)
110/120/220/240 Volts
(50/60 Hz)
Arcing Time
12 Milliseconds
(3/4 cycle) or less
Min Trip Voltage
80% Rated Coil Voltage
Trip Burden 24 VDC 1200 VA
Pickup Voltage
80% Rated Coil Voltage 48 & 96 VDC 400 VA
Dropout Voltage
60% Rated Coil Voltage 110 & 220 VAC 500 VA
