IMGT30017EN 57
6A. OPTIONS
6A.1 Introduction
The GT3000 may be ordered with a variety of options; some of the more in demand are discussed in this chapter.
Consult the factory for special requirements.
6A.2 Dynamic Braking
6A.2.1 Braking Unit
GT3000 drives (except SVGT340-780) can be equipped with a braking unit at the factory. The 10
th
character of the product code is for the braking unit.
Letter “B” in the 10th position indicates that the braking is mounted in the drive; letter “N” indicates that no braking unit is installed.
The braking unit is necessary when the braking torque required is higher than 15% of the nominal torque of the motor given in the Table “Electrical
Data” in chapter 2. The maximum braking torque allowed by using the braking unit, cannot exceed 150% of motor rated torque.
The braking unit is supplied without the braking resistor. The braking resistor can be selected by using the formulas in sub-paragraph 6A.1.3.
The braking unit can provide a continuous braking power calculated based on 50% the rated motor power (see par. 2A.4 “Electrical data”).
Note: For heavy duty cycles (e.g., applications in lifting/hoisting devices), contact the manufacturer.
Table 6A.2.1. GT3000 Braking Units, Resistors and Fuses for Drives Rated 380V-480V ±10%
(1)External brake fuses Minimum resistor
value *
Inverter
type
Rb
Cont.
Power
Switch
Typical resistor
@ 400V
Rating Bussmann Ferraz Code
@ 400V @ 480V KW KW
Ω
SAP Code (A-V) BSS88…. - -
SVGT0P3
200Ω
315 1 0,6 3X110 in series
ELC40949901
10-690 10CT- - -
SVGT0P4
200Ω
315 1,5 0,6 3X110 in series
ELC40949901
10-690 10CT-
SVGT0P6
100Ω
110 3
1,3 2X55 in series ELC40950001
10-690 10CT-
SVGT008
80Ω
86 3
1,3 2X55 in series ELC40950001
30-690 30CT
SVGT011
60Ω
65 4
1,3 2X55 in series ELC40950001
30-690 30CT - -
SVGT015
40Ω
44 5
2,2 55 ELC40950201
30-690 30CT
SVGT018
40Ω
44 5
2,2 55 ELC40950201
30-690 30CT
SVGT022
30Ω
33 7,5
4 55 ELC40950301
40-690 40FE 6,6URS7/40 402439
SVGT028
20Ω
33 9
4 28 ELC40950302
40-690 40FE 6,6URS7/40 402439
SVGT030
20Ω
33 9
4 28 ELC40950302
40-690 40FE 6,6URS7/40 402439
SVGT036F
20Ω
33 9
4 28 ELC40950302
40-690 40FE 6,6URS7/40 402439
SVGT045F
13 Ω
14 11
8 15 ELC40950403
80-690 80FE 6,6URS17/80 402433
SVGT053F
10 Ω
11 15
8 15 ELC40950403
80-690 80FE 6,6URS17/80 402433
SVGT066F
10 Ω
11 15
8 15 ELC40950403
80-690 80FE 402433
internal brake fuses
SVGT086F
7 Ω
8 35
16 2x15 in parallel ELC40950403
140-690 140EET 402446
SVGT108F
7 Ω
8 35
16 2x15 in parallel ELC40950403
140-690 140EET 402446
SVGT125F
5 Ω
5,5 40
16 2x15 in parallel ELC40950403
140-690 2x140EET 402446
SVGT150F
3,3 Ω
3,6 50
32 4x15 in parallel ELC40950403
140-690 2x140EET 402446
SVGT166F
3,3 Ω
3,6 50
32 4x15 in parallel ELC40950403
140-690 2x140EET 402446
SVGT200F
3,3 Ω
3,6 50
32 4x15 in parallel ELC40950403
140-690 2x140EET 402446
SVGT250F
4 + 4Ω
4,3+4,3 70
16+16 2x(2x10) in parallel ELC40950404
140-690 (2+2)x140EET 402446
SVGT292F
3,3+3,3Ω
3,6+3,6 3 x 70
16+16 2x(2x10) in parallel ELC40950404
140-690 (2+2)x140EET 402446
(1)
At user charge
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