SACE EMAX 2 NEW LOW VOLTAGE POWER C I RCUI T BRE AKERS TO ANS I C37 / UL 1066 / CSA STANDARDS
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— Technical characteristics for protection trip units Measurement functions
Instantaneous measurements
Displayed with Ekip Multimeter
Parameters
Currents (RMS)
[A] [A]
• •
L1, L2, L3, Ne
Ground fault current (RMS)
Ig
Record of values: of the parameter for each interval with time-stamping
Parameters I Min, I Max
Current: minimum and maximum
[A]
•
Information on trip and opening data: after a fault with or without auxiliary supply
Parameters eg. L, S, I, G
Type of protection tripped
• • •
Fault values per phase
[A]
eg. I1, I2, I3, neutral for S protection Date, time and progressive number
Time-stamping
Maintenance indicators Information on last 30 trips Information on last 200 events Number of mechanical operations (1)
Parameters
• • • • • • • • •
Type of protection, fault values and time-stamping
Type of event, time-stamping Can be associated to alarm
[no] [no]
Total number of trips Total operating time
[h]
Wear of contacts
[%]
Prealarm >80%, Alarm = 100%
Date of maintenance operations performed Indication of maintenance operation needed
Last
Circuit-breaker I.D.
Type of circuit breaker, assigned device name, serial number
Self-diagnosis
Parameters
Check of continuity of internal connections
•
Alarm due to disconnection: rating plug, sensors, trip coil Alarm following non-tripping of protection functions
Failure of circuit breaker to open (ANSI 50BF)
• •
Temperature (T)
Pre-alarm and alarm for abnormal temperature
(1) with auxiliary supply present Note: In case of Black trip units, 0.4% In is the lowest current value detected by Emax 2
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