Protection Relays
Motor and Pump Protection - 3-Phase Pump Protection
777-KW/HP-P2 SERIES
3-Phase Current & Voltage Monitor
Description
The 777-KW/HP-P2 Series has the overload, voltage, phase loss
and reversal, voltage and current unbalance, current and power
monitoring*, and underload trip based on power in one package.
The underpower trip feature is desirable anytime the current vs.
load characteristic is non-linear or has little change. In general
terms, smaller motors and slow-speed motors have little change
in current over the normal load range. Larger motors that are
running light loads will also show small current changes over
the operating load range. For standalone applications, the units
incorporate a 3-digit LED display that is used for programming,
providing real-time operational information and displaying
diagnostic codes to aid in troubleshooting a fault condition.
Power is Linear, equal
sensitivity at both
low and high
loads.
CONTACTOR
Wiring Diagram
TYPICAL WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES
2
3
Current is not linear, low
sensitivity for low loads
and high sensitivity
for high loads.
CONTROL
POWER
Power
COIL
A
B
C
No Load
Full Load
Current
No Load
Full Load
START
M
STOP
AUTO
TO MOTOR
Figure 1: Typical Wiring Diagram
The units also feature a communications port that can be used
with communication modules listed in the 777 accessories
section to form a Modbus, DeviceNet™, Profibus, or Ethernet
network. Up to 99 units can be remotely monitored and
controlled from a PC, PLC, or SCADA system, and data logging
through a PC with the optional Solutions software.
* Low current trip and high power trip are network programmable only
CURRENT TRANSFORMER WIRING DIAGRAM
FOR 777-KW/HP-P2 SERIES
Features & Benefits
FEATURES
Low and High Power
Protection
BENEFITS
Increases reliability for non-linear motors where the
load characteristic has little change
Visual indication for programming, viewing real-time
voltage, current, kilowatts, or horsepower, and last
fault code
Allows usage on wide range of systems
Choose from automatic, semi-automatic, or manual to
best meet individual application needs
Program separate restart delay time for rapid cycle
protection, motor cool down, and dry-well recovery
Increases safety through remote display of real-time
data and fault history, without the need to open the
cabinet. Aids with arc flash safety regulations
Reset can be done through pushbutton on relay or
remotely with optional 777-MRSW or OL-RESET
remote reset kit
Compatible with Modbus, DeviceNet™, Profibus, or
Ethernet using optional communications module
LITTELFUSE RECOMMENDS
USING CTs WITH TERMINALS
TO SIMPLIFY INSTALLATION.
Built-in Display
Programmable voltage
and current settings
12 - 16 AWG
STRANDED
WIRE
3 selectable
restart options
3 programmable restart
delay timers
Remote display
compatibility
All CTs must face the same direction, and all CT
secondaries must be wired identically, i.e. all X1
terminals enter the main (round) window and return
to H1 terminal after exiting the loop conductor
window (rectangle). Every CT secondary must
make 5 passes through the corresponding main
conductor window.
Flexible reset
Network
communications
capability
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/777kwhpp2
Rev: 1-A-062816
Protection Relays
Motor and Pump Protection - 3-Phase Pump Protection
777-KW/HP-P2 SERIES
Ordering Information
MODEL
LINE VOLTAGE MOTOR FULL AMP RANGE
DESCRIPTION
777-KW/HP-P2
777-LR-KW/HP-P2
200-480VAC
(3-phase)
200-480VAC
(3-phase)
2-800A (external CTs
required above 90A)
1-800A (external CTs
required above 9A)
2-800A (external CTs
required above 90A)
2-800A (external CTs
required above 90A)
0.5-21A and 40-740A
with external CTs
Provides 480VA @ 240VAC output SPDT relay contacts
Provides 480VA @ 240VAC output SPDT relay contacts
Provides 470VA @ 600VAC output SPDT relay contacts. Required when a CPT (control
power transformer) is not used on a 480V system. Commonly used in pumping applications
to save the cost and extra wiring associated with a CPT
Provides 480VA @ 240VAC output SPDT relay contacts. Used in Canada and NE USA
where 575V utility power services are common
Provides 480VA @ 240VAC output SPDT relay contacts. It is wired directly without the
need to loop conductors for 5-21 amps (under 5 amps requires looping of conductors), and
can be used with external CTs for 40-740 amps
340-480VAC
777-HVR-KW/HP-P2
(3-phase)
777-575-KW/HP-P2
500-600VAC
(3-phase)
200-480VAC
777-MLR-KW/HP-P2
(3-phase)
Accessories
RS485MS-2W Communication Module
(for limited Modbus capabilities)
Required to
enable the Modbus communications function on
Model 77X-type products.
CIO-MB/CIO-120-MB Communication Module
Modbus-RTU interfaces capable of providing
discrete control and monitoring of an overload
relay over a Modbus network.
CIO-DN-P/CIO-120-DN-P
Communication Module
DeviceNet™ interfaces capable of providing
discrete control and monitoring of motor
starters, drives and other devices over a
DeviceNet™ network.
CIO-777-PR Communication Module
Profibus interface capable of providing discrete
control and monitoring of motor starters, drives
and other devices over a Profibus network.
CIO-EN (non-POE) Communication Module
Modbus-TCP and Modbus-RTU interface capable
of providing discrete control and monitoring of an
overload relay over a Modbus network.
Communication Adapters
•
RS485-RS232–Converter
with cable & plug
•
RS485-USB–Converter
with cable & plug
•
RS232-USB–Converter
Specifications match industry standard.
RM1000 Remote Monitor
The RM1000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring for up to 16 devices.
RM2000 Remote Monitor
The RM2000/777 motor management system
combines unsurpassed electronic motor
protection and critical, user-friendly, motor
monitoring with event storage and real-time
clock for date and time stamp.
Solutions Software: Solutions-M
Software features include data logging, real-time
data monitoring and fault and event monitoring.
777-MRSW Manual Remote Reset Kit
Allows the 777 line of MotorSaver
®
and
PumpSaver
®
products to be manually reset
without opening the panel door.
OL-RESET Manual Remote Reset Kit
Allows the 777 line of MotorSaver
®
and
PumpSaver
®
products to be manually reset
without opening the panel door.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/777kwhpp2
Rev: 1-A-062816
Protection Relays
Motor and Pump Protection - 3-Phase Pump Protection
777-KW/HP-P2 SERIES
Specifications
Frequency
Functional Characteristics
TC-Overcurrent Trip Class
Output Characteristics
Output Contact Rating
(SPDT - Form C)
Pilot duty rating
General purpose
Pilot duty rating for
HVR model
General Characteristics
Ambient Temperature Range
Operating
Storage
Accuracy
Voltage
Current
Power
GF Current
Timing
Repeatability
Voltage
Current
Power
Maximum Input Power
Pollution Degree
Class of Protection
Relative Humidity
Terminal Torque
Standards Passed
Electrostatic Discharge
(ESD)
Radio Frequency Immunity
(RFI), Conducted
Radio Frequency Immunity
(RFI), Radiated
Fast Transient Burst
Short Circuit Rating
50/60Hz
02-60, J02-J60, L00-L60 or OFF
Surge
IEC
ANSI/IEEE
Hi-potential Test
480VA @ 240VAC, B300
10A @ 240VAC
470VA @ 600VAC, B600
Vibration
Shock
Safety Marks
UL
CE
CSA
Maximum Conductor Size
(with insulation)
through 777
Dimensions
Weight
Mounting Method
61000-4-5, Level 3, 2kV line-to-line; Level 4,
4kV line-to-ground
C62.41 Surge and Ring Wave Compliance to a
level of 6kV line-to-line
Meets UL508
(2 x rated V +1000V for 1 minute)
IEC 68-2-6, 10-55Hz, 1mm peak-to-peak,
2 hours, 3 axis
IEC 68-2-27, 30g, 3 axis, 11ms duration,
half-sine pulse
UL508, UL1053 (File #E68520)
IEC 60947-1, IEC 60947-5-1
C22.2
-20° to 70°C (-4° to 158°F)
-40° to 80°C (-40° to 176°F)
±1%
±3% (<100 amps direct)
±4% (<100 amps direct)
±15%
±0.5 second
±0.5% of nominal voltage
±1% (<100 amps direct)
±2%
10 W
3
IP20
10-95%, non-condensing per IEC 68-2-3
7 in.-lbs.
0.65”
H
77.47 mm
(3.05”); W
97.79 mm (3.85”);
D
128.27 mm (5.05”)
1.56 lbs. (24.96 oz., 707.6 g)
Surface mount (4 - #8 screws) or
DIN rail mount
IEC 61000-4-2, Level 3, 6kV contact, 8kV air
IEC 61000-4-6, Level 3 10V/m
IEC 61000-4-3, Level 3 10V/m
IEC 61000-4-4, Level 3, 3.5 kV input power
100kA
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/777kwhpp2
Rev: 1-A-062816
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