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Protection Relays & Controls
Generator & Single-Function Protection–Voltage
G3300 Series
Voltage Relay
Description
The G3300 Voltage Relay monitors voltage on generators,
busbars or other distribution systems. The relay provides
“undervoltage” and “overvoltage”, time delayed, and two
individual output relays—one for each function.
Basic adjustments can be done on the dials on the front
panels. More configuration options are available through PC
configuration via the optional G0100 programming Kit. PC
programming enables the user to extend the ranges on the
dials on the front panel.
One version covers all system voltages from 63 Vac to
690 Vac. Rated voltage can be adjusted by a preset button or
PC configuration. Auxiliary supply voltage is 24 Vdc.
Simplified Circuit Diagram
+
–
PICKUP RELAY
or
PHASES TRIP
RELAY
OK
Features & Benefits
RESET
24 Vdc
G3300
Features
BENEFITS
PC configuration
Over and undervoltage protection in
one relay
User configurable scales
and setpoints
Suits broad variety of applications
Phase symmetry monitor
Enables use in grid connection
applications
63 Vac to 690 Vac systems can
be monitored by the same unit
Supports wide range of system
voltages
(Voltage Relay)
L1
L2
Specifications
L3
Supply
8-36 Vdc/0.75 W at 24 Vdc
Input Voltage
63-690 Vac ± 30%
Frequency35-75Hz
Trip Level
100 to 120% (max. 1 to 130%)
Hysteresis
1-10% (max. 1-50%)
Delay
1-10 sec. (max. 1-360 sec.)
380 Vac, 5 A, 1250 VA, 150 Vdc, 5 A, 120 W
Relay Rating
Phase failure, phase order & symmetry
Phase Monitor
Normal state: ND (NE)
Pick-up (Phase) Relay
Latching: Non-latching
Normal state: ND (NE)
Trip Relay
Latching: Non-latching
Reset
Automatic (manually by terminal 11)
± 5%
Accuracy
± 1%
Repeatability
Serial LinkRJ11-modular
Operating Temperature –20°C to + 70°C
EMCEN50263
Burn-in
50 hours before final test
Polycarbonate. Flame retardant
Enclosure Material
Weight
0.3 kg
H 73 mm (2.87”); W 75 mm (2.95”);
Dimensions
D 114 mm (4.49”)
35 DIN rail or two 4 mm, (3/16”) screws
Installation
Ordering Information
Ordering Number
Control power
G3300.0010
24 Vdc
accessories
requirement
G0100
Optional
Accessories
G0100 Programming Kit
Connects to RS232 port. Includes blank frontplate labels and permanent pen for texting scales.
www.BDTIC.com/littelfuse
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/g3300
Rev: 4-A-050213