Protection Relays & Controls
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/pgr-6150
Features & Benefits
Motor Protection–Standard (PGR 6000 Family)
FEATURES IEEE # BENEFITS
No CTs required 49, 51 No current transformers are required for currents < 25 A
Adjustable trip settings Adjustable overload trip class setting from 5 to 45 to match motor characteristics
Digital input Programmable digital input
Output contacts Two programmable Form C output contacts for operation of separate annunciation and trip circuits
Overload
49, 51 Extends motor life and prevents insulation failures and fires
Overcurrent/Jam 50, 51 Detects catastrophic failures and fires; extends motor life
Undercurrent 37 Detects low level or no-load conditions
Unbalance (current)
46 Prevents overheating due to unbalanced phases
Phase loss/
Phase sequence 46 Detects unhealthy supply conditions
PTC overtemperature
49 Detect high ambient or blocked ventilation and single phasing; prevents shaft/pump damage
Dynamic thermal model
Provides protection through starting, running, overload, and cooling cycles
Communications
RS-485 communications to remotely display metered values
Specifications
Protective Functions
(IEEE Device Numbers)
Input Voltage 110-230 Vac/Vdc; 24/48 Vdc, 5 W
AC Measurements RMS, 16 samples/cycle
Frequency 50, 60 Hz
Dimensions
(Control Unit) H 83 mm (3.3”); W 78 mm (3.1”); D 99 mm (3.9”)
(Operator Interface) H 56 mm (2.2”); W 106 mm (4.2”); D 22.8 mm (0.9”)
Output Contacts Two Form C
Communications RS-485 with Modbus
®
RTU
Approvals UL Listed (E353735), CE (European Union)
Warranty 5 years
Mounting DIN (Control Unit); Panel (Operator Interface)
Overload (49, 51)
Phase sequence (46)
Overcurrent (50, 51)
Jam
Ground fault (50G/N, 51G/N)
Undercurrent (37)
PTC overtemperature (49)
Failure to accelerate
RTD temperature (49)
Unbalance (current) (46)
Starts per hour (66)
Phase loss (current) (46)
Dynamic Thermal Modeling
Maximum Operating Temperature
Temperature
With PGR-6150 the
temperature is not exceeded,
no damage to motor
Motor
PGR-6150
Maximum Operating Temperature
For every 10°C over
insulation temperature
rating the motor loses
50% of its life span.
Temperature
Time
Motor
Traditional
Overload
!
Damage is caused,
decreases motor life
Traditional Overload resets
before motor has cooled down
With Thermal MemoryWithout Thermal Memory
MOTOR PROTECTION SYSTEM
PGR-6150 SERIES
TEMPERATURE
INPUT
DIGITAL
INPUTS
3
4
CTGF
5
6
PTC
7
8
12
14
11 22
24
21
K1 K2
RS-485
+
–
10 9
CONTROL
POWER
L2/NL1
GROUND-FAULT
CURRENT TRANSFORMER
PGC-6000 SERIES
FEEDER TO MOTOR
3 PHASE CTs
BUILT INTO RELAY.
EXTERNAL CTs
REQUIRED FOR
FLA >25 A.
OPERATOR INTERFACE
PGR-6150-OPI
+
(optional)
(optional)
Wiring Diagram
B
A
1
PGR-6150 SERIES
Motor Protection System
Rev: 4-A-050213
Based on Manual Rev 1
(2 Seiten)
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