this is new in the box-- the box is a bit dirty and rough from shelf wear. 200-480 vac--50/60 hz -- overload relay 20-90a
SymCom’s Model 777-HVR-KW/HP-P2 is a fully programmable
electronic power monitor. It is designed to monitor and protect any
3-phase, 340-480VAC motor drawing 2-800 full load amps (external CTs are
required above 90 amps). This unit’s Form C contacts are pilot duty
rated at 470VA@600VAC for applications where a control power transformer
(CPT) is used on a 480V system. This feature saves the cost and extra
wiring associated with a CPT. It provides unsurpassed protection from
faulty voltage, underload and overload conditions. The 777-HVR-KW/HP-P2
can be used in a variety of 3-phase applications and features a low
power trip point (adjustable on the unit) that is desirable any time the
current vs. load characteristic is non-linear or has little change. In
general, this applies to small slow speed motors, small centrifugal
motors and fractional horsepower motors. Low power protection can be
used any time in place of undercurrent protection.
The 777-HVR-KW/HP-P2 incorporates 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.
It also displays kilowatts and horsepower on the face of the unit.
The 777-HVR-KW/HP-P2 can be used as a stand-alone product or used in
a network to communicate with a PC, PLC, SCADA system, or SymCom’s
Solutions Software with the help of its built-in RS-485 communications
port. The 777-HVR-KW/HP-P2, in conjunction with SymCom’s CIO modules,
supports several communication protocols including Modbus/RTU,
Modbus/TCP, DeviceNet™ and Profibus. The units can also be connected to
SymCom’s remote monitors for a simple, costeffective way to meet new
requirements for arc-flash safety.
The unit’s many features include enhanced trip classes beyond the
NEMA standard trip classes. The settable trip class range is 2-60, with
or without jam protection, and a secondary linear trip delay can be set
with a range of 0-60 seconds. If both the trip class and linear trip
delay are set, the 777-HVR-KW/HP-P2 will follow the faster trip time.
Another feature is the automatic dry-well recovery timer that allows the
unit to automatically select a restart delay based on the last cycle’s
run time. This allows the 777-HVR-KW/HP-P2 to optimize restart delay
times.
The 777-HVR-KW/HP-P2 can be pre-programmed with a 9-volt battery
prior to actual installation. This can save a lot of time during initial
installations and avoid subsequent service calls when commissioning new
projects.