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LVSI804T WDG 12

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LV 804 T WDG 12 - Technical Data Sheet

FRAME LV 804 T
SPECIFICATIONS & OPTIONS
STANDARDS WINDINGS & ELECTRICAL PERFORMANCE

Cummins Generator Technologies industrial generators All generator stators are wound to 2/3 pitch. This
meet the requirements of BS EN 60034 and the relevant eliminates triplen (3rd, 9th, 15th …) harmonics on the
sections of other national and international standards voltage waveform and is found to be the optimum design
such as BS5000, VDE 0530, NEMA MG1-32, IEC60034, for trouble-free supply of non-linear loads. The 2/3 pitch
CSA C22.2-100, AS1359. design avoids excessive neutral currents sometimes seen
Other standards and certifications can be considered on with higher winding pitches. A fully connected damper
request. winding reduces oscillations during paralleling. This
winding, with the 2/3 pitch and carefully selected pole and
DESCRIPTION tooth designs, ensures very low levels of voltage waveform
distortion.
The STAMFORD PI range of synchronous ac generators
are brushless with a rotating field. They are separately TERMINALS & TERMINAL BOX
excited by the STAMFORD Permanent Magnet
Generator (PMG). This is a shaft mounted, high Standard generators feature a main stator with 6 ends
frequency, pilot exciter which provides a constant supply brought out to the terminals, which are mounted on the
of clean power via the Automatic Voltage Regulator (AVR) frame at the non-drive end of the generator. A sheet steel
to the main exciter. The main exciter output is fed to the terminal box contains the AVR and provides ample space
main rotor, through a full wave bridge rectifier, protected for the customers' wiring and gland arrangements. It has
by surge suppression. removable panels for easy access.

VOLTAGE REGULATORS SHAFT & KEYS

The P range generators complete with a PMG are All generator rotors are dynamically balanced to better
available with an analogue AVR as standard. The AVR than BS6861:Part 1 Grade 2.5 for minimum vibration in
has soft start voltage build up and built in protection operation. Two bearing generators are balanced with a
against sustained over-excitation, which will de-excite the half key.
generator after a minimum of 8 seconds.
Underspeed protection (UFRO) is also provided on both INSULATION/IMPREGNATION
AVRs. The UFRO will reduce the generator output voltage
proportional to the speed of the generator below a pre- The insulation system is class 'H'.
settable level. All wound components are impregnated with materials and
processes designed specifically to provide the high build
The MA330 AVR is full wave rectified, 3 phase rms required for static windings and the high mechanical
sensed with a voltage regulation of 0.5% rms (see the strength required for rotating components.
note on regulation). The UFRO circuit has adjustable
slope and dwell for controlled recovery from step loads. QUALITY ASSURANCE
An over voltage protection circuit will shutdown the output
device of the AVR, it can also trip an optional excitation Generators are manufactured using production procedures
circuit breaker if required. As an option, short circuit having a quality assurance level to
current limiting is available with the addition of current BS EN ISO 9001.
transformers.
NOTE ON REGULATION
The MA330 AVR needs a generator mounted current The stated voltage regulation may not be maintained in the
transformer to provide quadrature droop characteristics presence of certain radio transmitted signals. Any change
for load sharing during parallel operation. in performance will fall within the limits of Criteria 'B' of EN
Provision is also made for the connection of the 61000-6-2:2001. At no time will the steady-state voltage
STAMFORD power factor controller, for embedded regulation exceed 2%.
applications, and a remote voltage trimmer.
NB Continuous development of our products entitles us to
change specification details without notice, therefore they must
not be regarded as binding.

Front cover drawing is typical of the product range.

2
FRAME LV 804 T
WINDING 12
RATINGS REFER TO SALES AND SERVICE BRIEFING
MAXIMUM ALTITUDE 1000 METRES ABOVE SEA LEVEL
MAXIMUM AMBIENT TEMPERATURE 40º C

CONTROL SYSTEM SERIES 3 SEPARATELY EXCITED BY P.M.G.


A.V.R. FULL WAVE RECTIFIED
VOLTAGE REGULATION ± 0.5% WITH 4% ENGINE GOVERNING
SUSTAINED SHORT CIRCUIT REFER TO SHORT CIRCUIT DECREMENT CURVES OF THIS SECTION

INSULATION SYSTEM CLASS H


PROTECTION IP23 STANDARD
RATED POWER FACTOR 0.8
STATOR WINDING DOUBLE LAYER LAP
WINDING PITCH 2/3
WINDING LEADS 6
R.F.I. SUPPRESSION BS EN 50081/2-1/2 VDE 0875G VDE 0875N For other standards apply to the factory
WAVEFORM DISTORTION NO LOAD < 1.5% NON-DISTORTING BALANCED LINEAR LOAD < 3.0%
MAXIMUM OVERSPEED 2250 Rev/Min
BEARING DRIVE END ISO 6232 C3
BEARING NON DRIVE END ISO 6324 C3
EFFICIENCY REFER TO EFFICIENCY CURVES OF THIS SECTION

FREQUENCY 50Hz 60Hz


TELEPHONE INTERFERENCE THF< 2% TIF<50
3 3
COOLING AIR 3.2 m /sec 3.7 m /sec
VOLTAGE STAR (Y) 380 400 415 440 416 440 460 480
kVA BASE RATING FOR
2895 3050 3050 2865 3170 3355 3508 3660
REACTANCE VALUES
Xd DIRECT AXIS SYNCHRONOUS 2.84 2.70 2.51 2.10 3.11 2.95 2.82 2.70
X'd DIRECT AXIS TRANSIENT 0.207 0.197 0.183 0.153 0.227 0.215 0.206 0.197
X''d DIRECT AXIS SUB-TRANSIENT 0.151 0.144 0.134 0.112 0.166 0.157 0.150 0.144
Xq QUADRATURE AXIS REACTANCE 1.91 1.82 1.69 1.41 2.10 1.99 1.90 1.82
X''q QUAD. AXIS SUB-TRANSIENT 0.283 0.269 0.250 0.209 0.310 0.293 0.281 0.269
XL LEAKAGE REACTANCE 0.090 0.086 0.080 0.067 0.099 0.094 0.090 0.086
X2 NEGATIVE PHASE SEQUENCE 0.219 0.208 0.193 0.161 0.240 0.227 0.217 0.208
X0 ZERO PHASE SEQUENCE 0.028 0.027 0.025 0.021 0.031 0.029 0.028 0.027
REACTANCES ARE SATURATED VALUES ARE PER UNIT AT RATING AND VOLTAGE INDICATED TO IEC60034 TOLERENCES
T'd TRANSIENT TIME CONSTANT 0.190
T''d SUB-TRANSIENT TIME CONSTANT 0.015
T'do O.C. FIELD TIME CONSTANT 4.400
Ta ARMATURE TIME CONSTANT 0.072
SHORT CIRCUIT RATIO 1/Xd

STATOR WINDING RESISTANCE (L-N) 0.000439


ROTOR WINDING RESISTANCE 1.500
EXCITER STATOR FIELD RESISTANCE 17.50
EXCITER ROTOR RESISTANCE (L-L) 0.076
PMG STATOR RESISTANCE (L-L) 3.800
RESISTANCE VALUES ARE IN OHMS AT 20º C

NO LOAD EXCITATION VOLTAGE 15.0


FULL LOAD EXCITAION VOLTAGE 63.0

Continuous development of our products entitles us to change specification details without notice,
therefore they must not be regarded as binding.

3
FRAME LV 804 T WDG 12 50 Hz

THREE PHASE EFFICIENCY CURVES

380 V
98.0

97.5

97.0 1.0
96.5 0.9
96.0 0.8
95.5

% 95.0 P.F.
94.5
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
2895.0 kVA
2895 kVA

400 V
98.0

97.5
97.0 1.0

96.5 0.9
96.0 0.8
95.5

% 95.0
P.F.
94.5
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

3050 kVA

415 V
98.0
97.5
97.0 1.0

96.5 0.9

96.0 0.8

95.5
% 95.0 P.F.
94.5
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

3050 kVA

440 V 98.0

97.5
1.0
97.0
0.9
96.5
0.8
96.0

95.5
% 95.0 P.F.
94.5
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

2865 kVA

4
FRAME LV 804 T WDG 12 60 Hz
THREE PHASE EFFICIENCY CURVES

416 V
97.5

97.0
1.0
96.5
0.9
96.0

95.5 0.8

95.0

% 94.5 P.F.
94.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
3170.0 kVA
3170 kVA

440 V
97.5
97.0
1.0
96.5
0.9
96.0
0.8
95.5
95.0
94.5
% P.F.
94.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

3355 kVA

460 V
98.0
97.5
97.0 1.0
96.5 0.9
96.0 0.8
95.5
95.0
% 94.5
P.F.
94.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

3508 kVA

480 V 98.0
97.5
1.0
97.0
96.5 0.9

96.0 0.8
95.5
95.0
% 94.5
P.F.
94.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

3660 kVA

5
FRAME LV 804 T WDG 12 50Hz
FULL WAVE RECTIFIED AVR
LOCKED ROTOR MOTOR STARTING CURVE
380V 400V 415V 440V
30.0
PER CENT TRANSIENT VOLTAGE DIP

25.0

20.0

15.0

10.0

5.0

0.0
0 1000 2000 3000 4000 5000 6000
LOCKED ROTOR kVA

FRAME LV 804 T WDG 12 50Hz

Three Phase Short Circuit Decrement Curve


No- Load Excitation at Rated Speed
Based on series star (wye) connection

NOTE 1
100000
THE FOLLOWING MULTIPLICATION FACTORS SHOULD BE USED TO ADJUST THE VALUES

FROM CURVES BETWEEN THE 0.001 SECONDS AND THE MINIMUM CURRENT POINT IN
SYMMETRIC
RESPECT OF NOMINAL OPERATING VOLTAGE

ASYMMETRICAL VOLTAGE FACTOR

380V X 0.95
400V X 1.00
415V X 1.04
440V X1.10
CURRENT (Amps)

THE SUSTAINED CURRENT VALUE IS CONSTANT IRRESPECTIVE OF VOLTAGE LEVEL


10000

NOTE 2
THE FOLLOWING MULTIPLICATION FACTORS SHOULD BE USED TO CONVERT THE
VALUES CALCULATED IN ACCORDANCE WITH NOTE 1 TO THOSE APPLICABLE
TO THE VARIOUS TYPES OF SHORT CIRCUIT
3 PHASE 2 PHASE L-L 1 PHASE L-N
INSTANTANEOUS X 1.0 X 0.87 X 1.30
MINIMUM X 1.0 X 1.80 X 3.20
SUSTAINED X 1.0 X 1.50 X 2.50
MAX SUSTAINED DURATION 10 SEC 5 SEC 2 SEC

ALL OTHER TIMES ARE UNCHANGED


1000
0.001 0.01 0.1 1 10
TIME (secs)

SUSTAINED SHORT CIRCUIT = 13427 Amps

6
FRAME LV 804 T WDG 12 60Hz
FULL WAVE RECTIFIED AVR
LOCKED ROTOR MOTOR STARTING CURVE

416V 440V 460V 480V


30.0
PER CENT TRANSIENT VOLTAGE DIP

25.0

20.0

15.0

10.0

5.0

0.0
0 1000 2000 3000 4000 5000 6000
LOCKED ROTOR kVA

FRAME LV 804 T WDG 12 60Hz

Three Phase Short Circuit Decrement Curve


No- Load Excitation at Rated Speed
Based on series star (wye) connection

NOTE 1
100000
THE FOLLOWING MULTIPLICATION FACTORS SHOULD BE USED TO ADJUST THE VALUES

SYMMETRIC FROM CURVES BETWEEN THE 0.001 SECONDS AND THE MINIMUM CURRENT POINT IN
RESPECT OF NOMINAL OPERATING VOLTAGE

ASYMMETRICAL VOLTAGE FACTOR

416V X 0.87
440V X 0.92
460V X0.96
480V X1.00
CURRENT (Amps)

THE SUSTAINED CURRENT VALUE IS CONSTANT IRRESPECTIVE OF VOLTAGE LEVEL


10000
NOTE 2
THE FOLLOWING MULTIPLICATION FACTORS SHOULD BE USED TO CONVERT THE
VALUES CALCULATED IN ACCORDANCE WITH NOTE 1 TO THOSE APPLICABLE
TO THE VARIOUS TYPES OF SHORT CIRCUIT
3 PHASE 2 PHASE L-L 1 PHASE L-N
INSTANTANEOUS X 1.0 X 0.87 X 1.30
MINIMUM X 1.0 X 1.80 X 3.20
SUSTAINED X 1.0 X 1.50 X 2.50
MAX SUSTAINED DURATION 10 SEC 5 SEC 2 SEC
ALL OTHER TIMES ARE UNCHANGED

1000
0.001 0.01 0.1 1 10
TIME (secs)
SUSTAINED SHORT CIRCUIT = 16509 Amps

7
FRAME LV 804 T
WINDING 12 0.8 Power Factor

RATINGS

Class - Temp Rise Cont. F - 105/40°C Cont. H - 125/40°C Standby - 150/40°C Standby - 163/27°C

50Hz Star (V) 380 400 415 440 380 400 415 440 380 400 415 440 380 400 415 440

kVA 2660 2800 2800 2630 2895 3050 3050 2865 3095 3260 3260 3065 3180 3350 3350 3150

kW 2128 2240 2240 2104 2316 2440 2440 2292 2476 2608 2608 2452 2544 2680 2680 2520

Efficiency (%) 96.2 96.3 96.3 96.4 96.1 96.2 96.2 96.4 95.9 96.0 96.1 96.3 95.9 96.0 96.1 96.3

kW Input 2212 2327 2325 2182 2411 2538 2535 2378 2581 2716 2713 2547 2653 2792 2789 2618

60Hz Star (V) 416 440 460 480 416 440 460 480 416 440 460 480 416 440 460 480

kVA 2910 3080 3220 3360 3170 3355 3508 3660 3390 3590 3752 3915 3490 3690 3857 4025

kW 2328 2464 2576 2688 2536 2684 2806 2928 2712 2872 3002 3132 2792 2952 3086 3220

Efficiency (%) 95.9 96.0 96.1 96.2 95.8 95.9 96.1 96.2 95.7 95.8 95.9 96.1 95.6 95.8 95.9 96.0

kW Input 2429 2566 2680 2793 2648 2798 2922 3045 2835 2998 3129 3261 2920 3082 3217 3354

TYPICAL DIMENSIONS - Further arrangements available - please refer to factory

Barnack Road • Stamford • Lincolnshire • PE9 2NB


Tel: 00 44 (0)1780 484000 • Fax: 00 44 (0)1780 484100

© 2009 TD_LV804T.12.GB_03.09_09_GB

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