Symcom 777-P2 Series Catalog Page

Overload Relays

The Model 777-P2 Series is a family of fully programmable electronic
overload relays. They are designed to monitor and protect any 3-phase 200­480VAC (500-600VAC for 777-575-P2) motor drawing 2-800 full load amps
(external CTs are required above 90 amps). They provide unsurpassed
protection from faulty voltage, underload and overload conditions.
Common applications include conveyor systems, HVAC equipment, saws
and grinders, fan motors and almost any pumping application.

Model 777-P2 Series

Features:

• Protects 3-phase motors from:

• High voltage

• Low voltage

• Voltage unbalance

• Reverse-phase

• Overcurrent

• Undercurrent

• Current unbalance

• Single-phase

• Network programmable

• Programmable with 9-volt battery prior to

installation

• Automatic reset with three separate restart delay
timers, or manual reset

• Tamper guard

• RS-485 communications port (communications

module sold separately)

• 3-digit LED diagnostic display

• Last fault memory

• 5-year warranty

• Made in USA

• UL and ULC listed

• CE compliant

• CSA approved

• Surface or DIN rail mount

The 777-P2 Series units can be used as a stand-alone product or the RS­485 communications port can be used to form a network to communicate
with a PC, PLC or SCADA system. The 777-P2 units can be used with
CIO modules produced by SymCom for several types of communication
protocols. Up to 99 model 777-P2 units can be networked together and
monitored and controlled by SymCom’s Solutions software. The units can
also be connected to SymCom’s remote monitors for a simple, cost-effective

way to meet new requirements for arc-ash safety.

The 777-P2 Series 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.

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 trip class and linear trip delay are set, the 777-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-P2 to optimize restart
delay times.

The units 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.

AUXILIARY PRODUCTS:

• Remote Displays (RM-1000/RM-2000)

• Communication Modules

• Remote Manual Reset Kit

• Solutions Software

[phone] / [phone] / Fax [phone]

[e-mail] / [e-mail]

Rev. 0110

Specications

Functional Specications

Programmable Operating Points
LV-Low Voltage Threshold
HV-High Voltage Threshold
VUB-Voltage Unbalance Threshold
MULT-# of Conductors or CT Ratio (xxx:5)
OC-Overcurrent Threshold
UC-Undercurrent Threshold
CUB-Current Unbalance Threshold
TC-Overcurrent Trip Class and Linear Overcurrent Trip Delay
RD1-Rapid-cycle Timer
RD2-Restart Delay after all faults except undercurrent (motor
cool-down timer)
RD3-Restart Delay after undercurrent (dry-well recovery timer)
#RU- Number of restarts after all undercurrent faults
ADDR-RS485 Address
#RF-Number of restarts after all faults except undercurrent
UCTD-Undercurrent Trip Delay
GF-Ground Fault Current Threshold

Input Characteristics

Supply Voltage
777-P2
777-575-P2
Frequency
Motor Full Load Amp Range

Output Characteristics

Output Contact Rating - SPDT (Form C)
Pilot Duty
General Purpose
Expected Life
Mechanical
Electrical

General Characteristics

Operating Temperature
Ambient Operating
Ambient Storage
Accuracy at 25o C (77o F)
Voltage
Current
Timing
Ground Fault
Repeatability
Voltage
Current
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
Surge
IEC
ANSI/IEEE
Hi-potential Test
Vibration
Shock
Safety Marks
UL
CE
Max Conductor Size through 777-P2
Dimensions
Weight
Mounting Method

*575V units

170-524V (450-649V*)
172-528V (451-660V*)
2-25% or 999 (disabled)
1-10, 100, 150, 200, 300, 400, 500, 600, 700, 800
(20-100A) ÷ MULT of 80-140% of CT Primary
(0, 10-98A) ÷ MULT or 40-140% of CT Primary
2-50% or 999 (disabled)
02-60, J02-J60; L00-L60 or oFF
0-999 seconds
2-500 minutes

2-500 minutes, A (automatic)
0, 1, 2, 3, 4, A (automatic)
A01-A99
0, 1, oc1, 2, oc2, 3, oc3, 4, oc4, A, ocA (automatic)
2-999 seconds (standard)
(3-20A) ÷ MULT or 12-40% of CT Primary or oFF

200-480VAC
500-600VAC
50/60Hz
2-20A, (looped conductors required); 20-90A (direct); 80-800A (exter­nal CTs required)

480VA@240VAC, B300
10A@240VAC

1 x 106 operations
1 x 105 operations at rated load

-20o to 70o C (-4o to 158o F)

-40o to 80o C (-40o to 176o F)

± 1%
± 3% (<100A direct)
± 0.5 second
± 15% (<100A)

± 0.5% of nominal voltage
± 1% (<100A direct)
10 W
3
IP20, NEMA 1
10-95%, non-condensing per IEC 68-2-3
7 in.-lbs.

IEC 61000-4-2, Level 3, 6kV contact, 8kV air
IEC 61000-4-6, Level 3 10V
IEC 61000-4-3, Level 3 10 V/m
IEC 61000-4-4, Level 3, 3.5 kV input power

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
IEC 60947-1, IEC 60947-5-1

0.65” with insulation

3.0” H x 3.6” W x 5.1” D

1.2 lbs.
Surface mount (4 - #8 screws) or DIN Rail Mount

Enclosure Dimensions

0.200" (5.08)

3.100" (78.74)

3.600" (91.44)

3.850" (97.79)

OPTIONAL LOOP HOLES

A B C

MAIN CONDUCTORPASS HOLES

D. 0.650" (16.51)

3.600" (91.44)

3.850" (97.79)

2.280"
(57.91)

(30.48)

1.200"

2.650"
(67.31)

4.700"

(119.38)

3.050"

(77.47)

(128.27)

5.050"

How to order:
Part Number: 777-P2

777-575-P2

[phone] / [phone] / Fax [phone]

[e-mail] / [e-mail]

Rev. 0110