Minimum And Maximum Current Settings; Bypass Contactor; Main Contactor; Circuit Breaker - Danfoss vlt soft starter mcd 500 Operating Manual

Electrical Installation

4.5 Minimum and Maximum Current Settings

The minimum and maximum full load current settings depend on the model:
MCD5-0021B
MCD5-0037B
4 4
MCD5-0043B
MCD5-0053B
MCD5-0068B
MCD5-0084B
MCD5-0089B
MCD5-0105B
MCD5-0131B
MCD5-0141B
MCD5-0195B
MCD5-0215B
MCD5-0331B
MCD5-0396B
MCD5-0469B
MCD5-0525B
MCD5-0632B
MCD5-0744B
MCD5-0825B
MCD5-0961B
MCD5-0245C
MCD5-0360C
MCD5-0380C
MCD5-0428C
MCD5-0595C
MCD5-0619C
MCD5-0790C
MCD5-0927C
MCD5-1200C
MCD5-1410C
MCD5-1600C
Table 4.6 Minimum and Maximum Full Load Current

4.6 Bypass Contactor

®
Some VLT Soft Starter MCD 500 soft starters are internally
bypassed and do not require an external bypass contactor.
Non-bypassed soft starters may be installed with an
external bypass contactor. Select a contactor with an AC1
rating greater than or equal to the full load current rating
of the connected motor.
24
Model Minimum [A]
Danfoss A/S © 05/2016 All rights reserved.
®
VLT Soft Starter MCD 500
In-line connection
Maximum [A]
5 23
9 43
10 50
11 53
15 76
19 97
20 100
21 105
29 145
34 170
40 200
44 220
70 350
85 425
100 500
116 580
140 700
164 820
184 920
200 1000
51 255
72 360
76 380
86 430
124 620
130 650
158 790
186 930
240 1200
282 1410
320 1600

4.7 Main Contactor

Install a main contactor if the VLT
connected to the motor in inside delta format and is
optional for in-line connection. Select a contactor with an
AC3 rating greater than or equal to the full load current
rating of the connected motor.

4.8 Circuit Breaker

A shunt trip circuit breaker may be used instead of a main
contactor to isolate the motor circuit in the event of a soft
starter trip. The shunt trip mechanism must be powered
from the supply side of the circuit breaker or from a
separate control supply.
Inside delta connection
Minimum [A] Maximum [A]
7 34
13 64
15 75
16 79
23 114
29 145
30 150
32 157
44 217
51 255
60 300
66 330
70 525
85 638
100 750
116 870
140 1050
164 1230
184 1380
200 1500
77 382
108 540
114 570
129 645
186 930
195 975
237 1185
279 1395
360 1800
423 2115
480 2400
®
Soft Starter MCD 500 is

MG17K602