Littelfuse G3000 Series - Manual

Protection Relays & Controls
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/g3000
Generator & Single-Function Protection–Frequency
G3000 SerieS
Frequency Relay
Description
The G3000 Frequency Relay is intended for frequency
monitoring on generators, busbars or other distribution
systems. The relay contains the functions “under frequency”
and “over frequency”, time delayed, and two individual output
relays—one relay 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
L
2
L
3
G 3 000
L
1
24 Vdc
RESET
UNDER
FREQ.
OVER
FREQ.
(Frequency Relay)
+ –
Specifications
Supply 8-36 Vdc/0.75 W at 24 Vdc
Input Voltage 63-690 Vac ± 30%
Input Current 5 A CT, max. 10 A
Frequency 35-75Hz
Trip Level OF: 85 to 115% (max. 75 to 125%)
UF: 85 to 115% (max. 75 to 125%)
Delay 1-10 sec. (max. 1-360 sec.)
Relay Rating 380 Vac, 5 A, 1250 VA, 150 Vdc, 5 A, 120 W
Overfrequency Relay Normal state: ND (NE)
Latching: Non-latching (latching)
Underfrequency Relay Normal state: ND (NE)
Latching: Non-latching (latching)
Reset Automatic (manually by terminal 11)
Accuracy ± 5%
Repeatability ± 1%
Serial Link RJ11-modular
Operating Temperature
–20°C to + 70°C
EMC EN50263
Burn-in
50 hours before final test
Enclosure Material Polycarbonate. Flame retardant
Weight 0.3 kg
Dimensions H 73 mm (2.87”); W 75 mm (2.95”);
D 114 mm (4.49”)
Installation 35 DIN rail or two 4 mm, ( 3 / 16 ”) screws
OrderinG number COntrOl POwer
G3000.0010 24 Vdc
Ordering Information
G0100 Programming Kit
Connects to RS232 port. Includes blank front-
plate labels and permanent pen for texting scales.
Features & Benefits
Accessories
aCCeSSOrieS requirement
G0100 Optional
FeatureS beneFitS
PC configuration
Over and under frequency protection
in one relay
User configurable scales and
setpoints
Suits broad variety of applications
63 Vac to 690 Vac systems can
be monitored by the same unit
Supports wide range of system voltages
Rev: 4-A-050213