Symcom 355-600 Engineering Specification

ENGINEERING SPECIFICATION

SYMCOM MODEL 355-600

3-PHASE VOLTAGE MONITOR/PROTECTION RELAY

PART 1 GENERAL

1.1 REFERENCES

A. UL 508 Industrial Control Equipment – Underwriters Laboratories
B. IEC 60947 Low Voltage Switchgear and Controlgear – International Electrotechnical Commission
C. ANSI/IEEE C62.41 – American National Standards Institute/Institute of Electrical & Electronics Engineers

1.2 WARRANTY

A. Manufacturer Warranty: The manufacturer shall guarantee the equipment to be free from material and workmanship defects for a
period of five years from the date of manufacture when installed and operated according to the manufacturer’s requirements.

PART 2 PRODUCTS

2.1 MANUFACTURERS

The equipment specified shall be the Model 355-600, manufactured by SymCom, Inc.

2.2 DESCRIPTION

A. Regulatory Requirements:

1. The equipment shall be UL Listed as type NKCR—Industrial Control Equipment-Motor Controllers-Auxiliary Devices.

2. The equipment shall be ULC Listed as type NKCR7—Industrial Control Equipment-Motor Controllers-Auxiliary Devices

2.3 PERFORMANCE/DESIGN CRITERIA: 3-PHASE VOLTAGE MONITOR/PROTECTION RELAY

Certified for Canada.

A. Protective Relay Functions

1. The equipment shall provide protection against the following conditions:
a. phase loss
b. phase reversal
c. low voltage
d. voltage unbalance
e. rapid cycling due to power faults*
f. high voltage

B. Capabilities and Features

1. Inputs
a. The equipment shall accept 3-phase input voltage range from 475-600, adjustable.
b. The equipment shall accept 3-phase voltage at 50/60Hz.

2. Outputs
a. The equipment shall include one Form C (SPDT) output relay. Contacts pilot duty rated 470VA@600VAC.

3. The equipment shall include:
a. a low voltage trip of 90% of nominal setting
b. a high voltage trip of 110% of nominal setting
c. an adjustable phase unbalance trip point of 2-8%
d. an adjustable trip delay of 2-30 seconds for low voltage, high voltage, and unbalanced faults
e. a trip delay of 2 seconds for single-phasing faults (>25% voltage unbalance).
f. an adjustable restart delay of 2–300 seconds or manual restart
g. voltage accuracy ±1%

4. The equipment shall include four indicator lights. The indicator lights have the capability to indicate whether the phase monitor
is in run mode, restart delay mode, or fault mode.
a. Fault modes shall be low/high voltage, unbalance/single phase and phase reversal.

C. Electromagnetic Compatibility

1. The equipment shall be immune to electrostatic discharge per IEC 61000-4-2, Level 3, 6kV contact discharge and 8kV air
discharge.

2. The equipment shall be immune to electrical fast transient bursts exceeding IEC 61000-4-4, Level 3. Specified limits shall
be 4kV.

3. The equipment shall be immune to electrical surges per IEC 61000-4-5. Specified limits shall be Level 3, 4kV line-to-line,
and Level 4, 4kV line-to-ground.

D. Dielectric Isolation: Equipment withstands an alternating current potential of 1000V plus twice the rated voltage of the

equipment for 1 minute without breakdown between uninsulated live parts and the enclosure with the contacts open and closed;
between terminals of opposite polarity with the contacts closed; and between uninsulated live parts of different circuits.

*Using the adjustable restart delay to increase time before restart after a fault.

ES-355-600_A 3/3/2011

E. Environmental Requirements

1. The equipment shall operate continuously without derating in ambient temperatures of -40° to 70°C (-40° to 158°F).

2. The equipment shall operate continuously without derating in relative humidity of 10% up to 95% non-condensing per IEC
68-2-3.

3. The equipment shall operate properly after storage in ambient temperatures of -40° to 80°C (-40° to 176°F).

F. Dimensions: The equipment dimensions shall not exceed 2.93” H X 5.27” W X 2.95” D.
G. Mounting: The equipment shall be surface mountable.

End of Section

ES-355-600_A 3/3/2011