250kw Generating sets use Brushless Alternator with high quality

Dingol Alternator 1.Rating Power:230,240,250KW 2.Voltage:380-416,416,440V 3.Phase:Three/Single 4.Bearing:Single/Double

Rating Power 

Model	Three Phase 60Hz 1800RPM
Power Factor	0.8		0.8		0.8		0.8		0.8		0.8
Volts
Series Star	-		380-416		416		440		460		480
Parallel Star	380-416		190-208		208		220		230		240
Series Delta	-		220-240		240		254		266		277
Parallel Delta	220-240
Winding No.	13		14		11		11		11		11
Rating	KVA	KW	KVA	KW	KVA	KW	KVA	KW	KVA	KW	KVA	KW
DG444C	300	240	300	240	288	230	300	240	300	240	313	250
DG444D	350	280	350	280	340	272	360	288	360	288	375	300
DGK444D	350	280	350	280	350	280	375	300	375	300	388	310
DG444E	-	-	-	-	381	305	400	320	400	320	415	332
DGK444E	-	-	-	-	400	320	420	336	420	336	430	344
DG444F	475	380	-	-	444	355	455	364	463	370	475	380
DGK444F	500	400	-	-	454	363	480	384	500	400	500	400

Brushless Generator

Features:

1).Advanced automatic voltage regulator conttrol for trouble-free operation under the most demaning condition

2).Easy paralleling with mains or other generators .Standard 2/3 pitch windings avoid excessive neutral currents. One slot sttor skewing further reduces harmonics.

3).Dynamically balanced rotor,with sealed-for-life ball bearings and single or two-bearing construction.

4).Simple installation and maintenance with easy access to terminals,rotating diodes and coupling bolts.

5).Wide range of Flange adaptor and single bearing coupling disc.

MECHANICAL FEATURES

Enclosure

IP23(NEMA 1) is standard for all industrial and marine generators .

Shaft & Keys

All alternator rotors are dynamically balance to better than Bs6861 P.1,G2.5 for minimum vibration in operation .Two bearing generators are balanced with a half-key.

Terminal and terminal box

The 3Phase altenrators had 12 ends brought out to the terminal box .The terminals are put on the non drive end..The box is equipped with removable panels .

Voltage regulation

Voltage regulation refers to the change of voltage from no-load to full-load with power factor ranging from 0.8 to 1 and 3%s fluctuation of the speed of engines .Voltage is adjusted using a trimmer on the AVR .

ELECTRIC FEATURES

 Insulation:

The insulation system is class ‘H’

.All wound components are impregnated with materials and processes designed specifically to provide protection against the harsh environments encountered in generator applications. Resin based materials are selected and developed to provide the high build required for static windings and the high mechanical strength required for rotating components.

Winding and electric features;

Generator stator is wound to 2/3 pitch. This eliminates triplen (3rd, 9th,15th…) harmonics on the voltage waveform and is found to be the optimum design for trouble-free supply of non-linear loads. The 2/3 pitch design avoids excessive neutral currents sometimes seen with higher winding pitches, when in parallel with mains. A full connected damper winding reduces oscillations during paralleling. This winding, with 2/3 pitch and carefully selected pole and tooth designs, ensures very low waveform distortion.

Telephone interference

THF(as defined by BS4999 Part 40) is better than 2%. TIF(as defined by ASAC50.12) is better than 50.

Radio intterference

The absence of brush-gear and the high quality AVR ensure low levels of interference with radio transmissions.RFI suppression may be supplied if required .

Damper Winding

The alternators incorporate a damper winding in order to ensure good parallel running with mains network and other machines. Inserted into the shoes of the poles are the bars of the damper winding which are connected together at each end of the poles to form a closed cage. This arrangement provides the alternator with excellent damping against the torsinal vibration that occurs during changes in load and when running in parallel.

Accessories & Option

Droop kit for sharing of reactive current during parallel operation

 Remote voltage potentiometer

 PT100 thermal protection embedded in stator windings

 Anti condensation heaters

 IP23 protection

 Special treatment for damp-saline or corrosive

 Environment

 PMG

 Control panel with LCD digital meter

Standard

GB755,PART3of BS5000,VDE0530,UTE5100,NEMA MG1-22,CEMA,IEC34-1,CSA22.2 and AS1359.

Dingol AC alternator Warranty and Service

Warranty Period

1.In respect of a.c. generators the Warranty Period is eleven months from the date when the goods have been notified as ready for despatch by us.

2.Service

2.1    Within Product Quality Guarantee Period, if the product has quality problem as below, We will make good by repair, or at our option, by replacement.

2.11 Any fault that under proper use appears in the goods within the warranty period.

3.Service

3.1    With Installation, Service and Maintenance Manual

3.2    With Certificate of Conformity

3.3    With Connection Digram

4.Service

To affirm product quality problem within Product Quality Guarantee Period:

ease send the parts quality problem picture by the e-mail to us, our engineer will research it, to establish the solve project to the dealer,if these quality problems are true, we will supply the good quality parts to the dealer by the sea free of charge.

Dingol Alternator

Packing

Certificate

Production Line

Factory Overlook

250kw Generating sets use Brushless Alternator with high quality