Datasheet

www.symcom.com • 800-843-8848 • fax: [phone]
7
Available Models:
Auxiliary Products:
• Communication Modules (see pgs. 10-12)
• RM-1000/RM-2000 (remote displays)
(see pgs. 13-14)
• Solutions Software (see pg. 15)
• Manual Remote Reset Kit (see pg. 65)
Features:
• Low power protection
• High power protection
• Overcurrent (overload)
• High voltage
• Low voltage
• Current unbalance
• Voltage unbalance
• Ground fault detection
• Modbus communication
• Built-in 3-digit display for setup
and diagnostics
• Network communications
Approvals:
777-KW/HP-P2
777-LR-KW/HP-P2
777-HVR-KW/HP-P2
777-575-KW/HP-P2
777-MLR-KW/HP-P2
DEMOS:
777-KW/HP-P2-DEMO (777-KW/HP-P2 Demo only)
777-KWHP-P2-DEMO1 (777-KW/HP-P2 demo with
CIO-EN Ethernet Module)
777-KWHP-P2-DEMO2 (777-KW/HP-P2 demo,
CIO-EN and RM-1000 Remote
Monitor)
777-KWHP-P2-DEMO3 (777-KW/HP-P2 demo,
CIO-EN, RM-1000 and
RM-2000 Remote Monitor)
The Model 777-KW/HP-P2
Series
has the underload trip, adjustable on the face
of the unit, based on power, while all the
other products in the 777 family provide an
undercurrent trip.
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.
KW/HP products should be used with all small centrifugal motors and fractional
horsepower motors when underload protection is needed and with most motors under 3hp.
Also use KW/HP products when the motor is derated (Ex: Coal bed methane well with a
7.5hp submersible pump on a 10hp motor.) Other typical applications are mixer motors up
to 50hp and beyond that run at less than 1800 rpm, magdrive pumps and can pumps. If in
doubt, underpower can be used anytime in place of undercurrent protection.
The 777-KW/HP-P2 can display kilowatts and horsepower and a high power trip feature
that can be enabled over a network. The high power trip is useful added protection for
positive displacement pumps in a restricted flow (dead-head) condition.
-LR (Low Range) The 777-LR-KW/HP-P2 is specifically designed for use with 1-9 FLA
motors to ease installation when wired directly, or for 10-800 FLA motors with use of
external CTs.
-HVR The 777-HVR-KW/HP-P2 is required when a CPT (control power transformer) is
not used on a 480V system. It has a 340-480VAC range, a relay rated at 470VA @ 600VAC
pilot duty, and is commonly used in pumping applications to save the cost and extra wiring
associated with a CPT.
-575 The 777-575-KW/HP-P2 has a nominal 500-600VAC range and 240V relay. They are
commonly used in Canada and the Northeast US where 575V utility power services are
common.
-MLR The 777-MLR-KW/HP-P2 is used in applications that have a 0.5-21 and 40-740 full
load amp range. 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.
For more information see:
See Appendix A, page 66, Figure 1 for dimensional drawing.
See Appendix B, page 71, Figures 1 & 2 for typical wiring diagrams.
No Load
Power
Current
Full Load No Load Full Load
Power is Linear, equal
sensitivity at both
low and high
loads.
Current is not linear, low
sensitivity for low loads
and high sensitivity
for high loads.
Model 777-KW/HP-P2 Product Line
3-phase current & voltage monitor, on-board display, optional communications, underpower
trip for more accurate/faster motor protection versus undercurrent trip
Power Monitors
CATALOG_SYMCOM_2014.indd 7 6/10/14 11:06 AM