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GS20 
- Compact and light weighted design
- Simple installation and maintenance
- Easy access to terminal, rotating diodes and coupling bolts
- Low waveform distortion by unique and proper winding pitch.
- Wide range flange adaptors and single bearing disc coupling

- No. of Phase : 3 phase (6 wires or
12 wires)
- Standard voltage : 380, 400, 416, 440, 460, 480, 190, 200,
208, 220, 230, 240
(Other voltages will be consider on request)
- Frequency : 50Hz, 60Hz
- No. of Pole : 4P ( Salient type)
- Power Factor : KVA Ratings at 0.8 (LAG)
- Insulation : H Class
- Protection Standard : IP23
- Cooling Type : Ventilation forced by direct driven centrifugal
fan (Straight rdical type)
 SR-63 ad SR-125 voltage regulator are
the electronics A>V>R which control the output of brushless
AC Generator by regulating the current into the exciter field.
- Phase : 1
- Field Volts : 63V (SR-63), 125V (SR-125)
- Field AMPs : 5A (Max 8A)
- Sensing : 190 - 480 Vac 50/60Hz
- Power Input : 190 - 270 Vac
- Regulation : 1.0%
- Voltage Adjustment Range : ±5% with 1000ohms rheostat
- Frequency Compensation : Adjustable
- Under Frequency Protection : 52 - 61Hz for 60Hz operation
43 - 51Hz for 50Hz operation
- Operating Temperature : -40°C ~ +60°C
Dimensions & Weight
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GS20 - 11 ~ 35 KVA (3 phase, 12 wires)
| Voltage (12W) |
50Hz (1500rpm) |
60Hz (1800rpm) |
| Class
H (125イ) |
Class
F (105イ) |
Class
H (125イ) |
Class
F (105イ) |
| Series Star (Y) |
380 |
400 |
415 |
440 |
380 |
400 |
415 |
440 |
380 |
416 |
440 |
460 |
480 |
380 |
416 |
440 |
460 |
480 |
| Parallel Star (YY) |
190 |
200 |
208 |
220 |
190 |
200 |
208 |
220 |
190 |
208 |
220 |
230 |
240 |
190 |
208 |
220 |
230 |
240 |
| Series Delta (Δ) |
220 |
230 |
240 |
254 |
220 |
230 |
240 |
254 |
220 |
240 |
254 |
266 |
277 |
220 |
240 |
254 |
266 |
277 |
| GS20 |
SA |
KVA |
11 |
11 |
11 |
8 |
10 |
10 |
10 |
7 |
12 |
13 |
14 |
14 |
14 |
10 |
12 |
13 |
13 |
13 |
| KW |
8.8 |
8.8 |
8.8 |
6.4 |
8 |
8 |
8 |
5.6 |
9.6 |
10.4 |
11.2 |
11.2 |
11.2 |
8 |
9.6 |
10.4 |
10.4 |
10.4 |
| Eff% |
79.6 |
79.8 |
79.8 |
79.6 |
79.9 |
80.2 |
80.2 |
80 |
79 |
79.5 |
80.5 |
80.6 |
80.5 |
79.8 |
80.0 |
80.9 |
80.9 |
80.7 |
| SA5 |
KVA |
50Hz
, 440V |
11 |
- |
- |
- |
10 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| SA6 |
KVA |
60Hz
380V, 416V |
- |
- |
- |
- |
- |
14 |
14 |
- |
- |
- |
13 |
13 |
- |
- |
- |
| SAM |
KVA |
Marine
(90イ) |
- |
9 |
9 |
9 |
6 |
- |
- |
- |
- |
- |
9 |
11 |
12 |
12 |
12 |
| GS20 |
SB |
KVA |
14 |
14 |
14 |
10 |
13 |
13 |
13 |
9 |
14 |
16 |
17 |
17 |
16 |
12 |
14 |
15 |
15 |
14 |
| KW |
11.2 |
11.2 |
11.2 |
8 |
10.4 |
10.4 |
10.4 |
7.2 |
11.2 |
12.8 |
13.6 |
13.6 |
12.8 |
9.6 |
11.2 |
12 |
12 |
11.2 |
| Eff% |
81.3 |
81.5 |
81.5 |
81.4 |
81.5 |
81.8 |
81.8 |
81.6 |
80.3 |
80.7 |
81.7 |
81.8 |
81.7 |
81 |
81.5 |
82.3 |
82.4 |
82.2 |
| SB5 |
KVA |
50Hz
, 440V |
14 |
- |
- |
- |
13 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| SB6 |
KVA |
60Hz
380V, 416V |
- |
- |
- |
- |
- |
17 |
17 |
- |
- |
- |
15 |
15 |
- |
- |
- |
| SBM |
KVA |
Marine
(90イ) |
- |
12 |
12 |
12 |
8 |
- |
- |
- |
- |
- |
11 |
13 |
14 |
14 |
13 |
| GS20 |
MA |
KVA |
17 |
17 |
17 |
13 |
15 |
15 |
15 |
10 |
18 |
20 |
21 |
21 |
20 |
15 |
18 |
19 |
19 |
18 |
| KW |
13.6 |
13.6 |
13.6 |
10.4 |
12 |
12 |
12 |
8 |
14.4 |
16 |
16.8 |
16.8 |
16 |
12 |
14.4 |
15.2 |
15.2 |
14.4 |
| Eff% |
81.7 |
82 |
82 |
81.8 |
82.2 |
82.5 |
82.4 |
82.2 |
81.2 |
81.7 |
82.5 |
82.6 |
82.5 |
81.6 |
82.2 |
83 |
83.1 |
82.9 |
| MA5 |
KVA |
50Hz
440V |
17 |
- |
- |
- |
15 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| MA6 |
KVA |
60Hz
380V, 416V |
- |
- |
- |
- |
- |
21 |
21 |
- |
- |
- |
19 |
19 |
- |
- |
- |
| MAM |
KVA |
Marine
(90イ) |
- |
13 |
13 |
13 |
9 |
- |
- |
- |
- |
- |
13 |
16 |
17 |
17 |
16 |
| GS20 |
MB |
KVA |
24 |
24 |
24 |
18 |
22 |
22 |
22 |
16 |
25 |
27 |
29 |
29 |
28 |
22 |
24 |
26 |
26 |
25 |
| KW |
19.2 |
19.2 |
19.2 |
14.4 |
17.6 |
17.6 |
17.6 |
12.8 |
20 |
21.6 |
23.2 |
23.2 |
22.4 |
17.6 |
19.2 |
20.8 |
20.8 |
20 |
| Eff% |
82.2 |
82.4 |
82.4 |
82.2 |
82.5 |
83 |
83 |
82.8 |
82 |
82.2 |
83.1 |
83.1 |
83 |
82.4 |
82.7 |
83.6 |
83.6 |
83.4 |
| MB5 |
KVA |
50Hz
440V |
24 |
- |
- |
- |
22 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| MB6 |
KVA |
60Hz
380V, 416V |
- |
- |
- |
- |
- |
29 |
29 |
- |
- |
- |
26 |
26 |
- |
- |
- |
| MBM |
KVA |
Marine
(90イ) |
- |
20 |
20 |
20 |
14 |
- |
- |
- |
- |
- |
20 |
22 |
23 |
23 |
22 |
| GS20 |
LA |
KVA |
28 |
28 |
28 |
21 |
25 |
25 |
25 |
19 |
29 |
32 |
35 |
35 |
34 |
26 |
29 |
32 |
32 |
31 |
| KW |
22.4 |
22.4 |
22.4 |
16.8 |
20 |
20 |
20 |
15.2 |
23.2 |
25.6 |
28 |
28 |
27.2 |
20.8 |
23.2 |
25.6 |
25.6 |
24.8 |
| Eff% |
82.5 |
82.7 |
82.8 |
82.6 |
83 |
83.2 |
83.2 |
83 |
82.3 |
82.5 |
83.3 |
83.3 |
83.1 |
82.7 |
83 |
83.8 |
83.9 |
83.7 |
| LA5 |
KVA |
50Hz
440V |
28 |
- |
- |
- |
25 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| LA6 |
KVA |
60Hz
380V, 416V |
- |
- |
- |
- |
- |
35 |
35 |
- |
- |
- |
32 |
32 |
- |
- |
- |
| LAM |
KVA |
Marine
(90イ) |
- |
22 |
22 |
22 |
17 |
- |
- |
- |
- |
- |
23 |
26 |
29 |
29 |
28 |
- Industrial ratings are continuous output based on 40イ ambient
temperature and 1000m altitude.
- GS20 SA5 - LA5 : 50Hz, 6 Wire 440V (Y-connection), 254V (∆-connection)
only.
- GS20 SA6 - LA6 : 60Hx, 6 Wire 380V - 416V (Y-connection), 220V
- 240V (∆-connection) only.
- GS20 SAM - LAM : Marine ratings are based on 50イ ambientン temperature.
- Specification are subject to change without notice in order to improve
the performance.
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