Symcom 350-400 Engineering Specification

ENGINEERING SPECIFICATION

SYMCOM MODEL 350-400 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 350-400, 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

B. Capabilities and Features

1. Inputs
a. The equipment shall accept 3-phase input voltage range of 380-480VAC.
b. The equipment shall accept 3-phase input voltage 50/60 Hz.

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 phase unbalance trip point of 6%
c. a trip delay of 4 seconds for low voltage faults and 2 seconds for unbalanced and single-phasing faults
d. a restart delay of 2 seconds
e. voltage accuracy ±1%

4. The equipment shall have one indicator ligh t. The indicator light has the capability to indicate whether the phase monitor i s in
run mode, restart delay mode, or fault mode. Fault modes shall be low voltage, 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 4. Specified limits shall
be 2kV line-to-line and 4kV line-to-ground.

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.

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 2.90” high X 5.250” wide X 2.913” deep.
G. Mounting:

1. The equipment shall be surface mountable.

End of Section

ES-350-400_A1 4/6/2010