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53
Mean room temperature (°C)
15
20
25
30
35
40
45
50
55
60
K1 factor
1·15
1·12
1·08
1·05
1·025
1
0·975
0·95
0·93
0·89
Temperature rating schedule
Multiplier coefficient of nominal rating for room temperature values different from 40°C
1 : Values for 0·1 s
Suitable for the following climates :
Constant humid climate (DIN IEC 68 and 2 – 3)
Cyclical humid climate (DIN IEC 68 and 2 – 30)
Complies to :
IEC 439-1 and 2, BS EN 60439 part 1 and 2,
DIN VDE 0660 part 500 and 502
MR medium rating busbar
– 4 conductor (copper)
technical data
In (A)
Ue (V)
Ui (V)
ƒ (Hz)
I
cw
(kA)
rms
I
2
† (M A
2
s)
I
pk
(kA)
I
cw
(kA)
rms
I
pk
(kA)
I
cw
(kA)
rms
I
pk
(kA)
R
2
0 (m
Ω
/m)
R
†
(m
Ω
/m)
X (m
Ω
/m)
Rn
20
(m
Ω
/m)
Xn (m
Ω
/m)
R
PE
(m
Ω
/m)
X
PE
(m
Ω
/m)
R
Ph-Pe fault loop
(m
Ω
/m)
XR
Ph-Pe fault loop
(m
Ω
/m)
R
Ph-N fault loop
(m
Ω
/m)
XR
Ph-N fault loop
(m
Ω
/m)
∆
v (V/m/A)10
-6
cos
ϕ
= 0·70
∆
v (V/m/A)10
-6
cos
ϕ
= 0·75
∆
v (V/m/A)10
-6
cos
ϕ
= 0·80
∆
v (V/m/A)10
-6
cos
ϕ
= 0·85
∆
v (V/m/A)10
-6
cos
ϕ
= 0·90
∆
v (V/m/A)10
-6
cos
ϕ
= 0·95
∆
v (V/m/A)10
-6
cos
ϕ
= 0·00
P (W/m)
(kWh/m)
p (kg/m)
L x H (mm)
IP
IK
250
315
400
630
800
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
50/60
50/60
50/60
50/60
50/60
50/60
25
1
25
1
30
1
36
36
36
63
63
90
1296
1296
1296
53
53
63
76
76
76
15
1
15
1
18
1
22
22
22
30
30
36
45
45
45
15
1
15
1
18
1
22
22
22
30
30
36
45
45
45
0·237
0·180
0·096
0·061
0·040
0·032
0·320
0·243
0·129
0·082
0·053
0·043
0·205
0·188
0·129
0·122
0·122
0·120
0·237
0·180
0·096
0·061
0·040
0·032
0·205
0·188
0·129
0·122
0·122
0·120
0·336
0·336
0·336
0·279
0·279
0·279
0·220
0·220
0·220
0·180
0·180
0·180
0·657
0·579
0·466
0·361
0·332
0·322
0·425
0·408
0·349
0·302
0·302
0·300
0·558
0·423
0·225
0·143
0·093
0·074
0·425
0·408
0·349
0·302
0·302
0·300
321
263
158
125
108
100
326
265
158
123
105
96
329
266
157
120
100
92
329
264
154
116
95
86
327
260
149
110
88
79
319
251
141
101
77
68
277
210
112
71
46
37
60
72
62
98
103
128
1·3
1·3
1·3
1·8
1·8
1·8
9·3
10·2
13·3
18·2
23·9
27·9
76 x 195
76 x 195
76 x 195
136 x 195
136 x 195
136 x 195
52-55
52-55
52-55
52-55
52-55
52-55
10
10
10
10
10
10
3L+N+PE (Copper)
Rated current
Operational voltage
Insulation voltage
Frequency
Rated shortcircuit current withstand for 3-phase fault (1 s)
Specific Energy withstand for 3-phase fault
Peak current
Rated short-time current for single-phase fault Ph-N(1 s)
Peak current for single-phase fault Ph-N
Rated short-time current single-phase fault Ph-PE (1 s)
Peak current single-phase fault Ph-PE
Phase resistance at 20°C
Phase resistance at thermal conditions (I
n
; 40°C)
Phase reactance (50 Hz)
Neutral resistance at 20°C
Neutral reactance (50 Hz)
Resistance of the protective bar
Reactance of the protective bar (50 Hz)
Resistance of the phase-Pe fault loop
Reactance of the phase-Pe fault loop (50 Hz)
Resistance of the phase-neutral fault loop
Reactance of the phase-neutral fault loop (50 Hz)
Voltage “k” drop coeff. with
distribuited load (k)
Losses for the Joule effect at nominal current
Fire load
Weight
Overall dimensions of the busbar
Degree of protection (CEI EN60529)
IK code CEI EN60068-2-62
Voltage “k” drop coeff. with
distributed load (k)