Characteristics - ABB DCBreak Series Instructions For Installation & Operation

D I S T R I B U T I O N S O L U T I O N S
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6. Characteristics

6.1. Main circuit
Rated service voltage
Rated insulation voltage
Rated impulse withstand voltage
Rated service current
Conventional thermal current in free air
Rated duty short-circuit making and breaking capacity
(Nominal operating cycle): O - 20sec - CO - 60sec CO)
Direct overcurrent release: possible setting
ranges on request
Maximum arc voltage
Class of functional operations
6.2. Auxiliary control circuit
Rated voltage
Supply voltage limits (-25 °C < T.amb < +70 °C)
6.3. Standard duty conditions
Ambient temperature
(according to class T1 of IEC 60077-1 Table 2)
Relative humidity
Altitude
Time constant T1
Time constant T2
Time constant T3
Time constant T4
Unit DCBreak 915
Ue 900 V
Ui 2300 V
UBIL 18 kV
Ie 1500 A
Ith 1500 A
30 kA @ 0 ms
30 kA @ 15 ms
30 kA @ 50 ms
Iss/T 30 kA @ 150 ms
0.9 ÷ 1.3 kA
1.3 ÷ 1.8 kA
1.8 ÷ 2.5 kA
2.5 ÷ 3.6 kA
Ûarc 2.5 x Ue
C3
Un 24, 36, 48, 72, 110 V DC
Amb.T. Air temperature external to vehicle
Inside vehicle compartment temperature
Inside cubicle temperature
h
DCBreak 1815
1800 V
2300 V
18 kV
1500 A
1500 A
17 kA @ 0 ms
30 kA @ 15 ms
30 kA @ 40 ms
30 kA @ 100 ms
0.9 ÷ 1.3 kA
1.3 ÷ 1.8 kA
1.8 ÷ 2.5 kA
2.5 ÷ 3.6 kA
2.5 x Ue
C3
0.7 x Un - 1.25 x Un
-25°C ÷ + 40°C
-25°C ÷ + 50°C
-25°C ÷ + 70°C
95% at 40 °C
≤ 1400 m
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