BECKWITH ELECTRIC M-3425A, Instruction Book

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M‑3425A Generator Protection Relay
Electrical Environment
Electrostatic Discharge Test
EN 60255‑22‑2 Class 4 (8 kV)—point contact discharge
EN 60255‑22‑2 Class 4 (15kV)–air discharge
Fast Transient Disturbance Test
EN 60255‑22‑4 Class A (4 kV, 2.5 kHz)
Surge Withstand Capability
ANSI/IEEE 2,500 V pk‑pk oscillatory applied to each independent circuit to earth
C37.90.1‑ 2,500 V pk‑pk oscillatory applied between each independent circuit
1989 5,000 V pk Fast Transient applied to each independent circuit to earth
5,000 V pk Fast Transient applied between each independent circuit
ANSI/IEEE 2,500 V pk‑pk oscillatory applied to each independent circuit to earth
C37.90.1‑ 2,500 V pk‑pk oscillatory applied between each independent circuit
2002 4,000 V pk Fast Transient burst applied to each independent circuit to earth
4,000 V pk Fast Transient burst applied between each independent circuit

NOTE
: The signal is applied to the digital data circuits (RS‑232, RS‑485, IRIG‑B, Ethernet communication
port and field ground coupling port) through capacitive coupling clamp.
Radiated Susceptibility
ANSI/IEEE 25‑1000 Mhz @ 35 V/m
C37.90.2
Output Contacts
ANSI/IEEE Make 30 A for 0.2 seconds, off for 15 seconds for 2,000 operations, per Section 6.7.1, Tripping
C37.90.0 Output Performance Requirements
Atmospheric Environment
Temperature
IEC 60068‑2‑1
Cold,
–
20° C
IEC 60068‑2‑2 Dry Heat, +70° C
IEC 60068‑2‑3 Damp Heat, +40° C @ 93% RH
Mechanical Environment
Vibration
IEC 60255‑21‑1 Vibration response Class 1, 0.5 g
Vibration endurance Class 1, 1.0 g
IEC 60255‑21‑2 Shock Response Class 1, 5.0 g
Shock Withstand Class 1, 15.0 g
Bump Endurance Class 1, 10.0 g