48V - 3kW BLDC

Voltage: 48 V DC
Rev. w/o load: 1.200 1/min
Starting torque: 60 Nm at Imax = 150 A
Nominal power:~ 3 kW
Diameter: ~ 300 mm
Width : ~ 185 mm
Weight:~ 30 kg
Brake system: hydraulic disc brake

[ price: ,- HUF*] drawings »

48V - 2kW BLDC

Voltage: 48 V DC
Rev. w/o load: 1.200 1/min
Starting torque: 40 Nm at Imax = 100 A
Nominal power:~ 2kW
Diameter: ~ 300 mm
Width : ~ 100 mm
Weight:~ 15 kg

[ price: ,- HUF*]

model number: MY1016B4M6

24V - 350W

36V - 350W

for chain drive scooters

[ price: 11.700,- Ft +VAT ] datasheet »

[ price: 11.700,- Ft +VAT ] datasheet »

other application:

mezpergeto.hu »

DC motor as windmill »

model number: MY1016Z3 electric bicycle motor

36V - 350W (hajtóműves! áttétel: 88:9 )

Konzol a kerékppricera történő rögzítéshez

[ price: 15.952,- Ft +VAT ] datasheet »

[ price: 1.200- Ft +VAT ]

képek a konzolról (is) »

model number: MY1018 electric bicycle motor

24V - 450W hajtóműves! áttétel: 7.18:1

36V - 450W hajtóműves! out of stock

Konzol a kerékppricera történő rögzítéshez

[ price: 15.952- Ft +VAT ] datasheet »

[ price: 15.952- Ft +VAT ] datasheet »

[ price: 1.200- Ft +VAT ]

sample applications »

videofilm beépítésekről 1 » 2 »

model number: MY1020ZX

36V - 500W hajtóműves! áttétel: 6:1

48V - 600W hajtóműves! áttétel: 60:9 hűtőventillátoros kivitel, tengely ford.: 550 1/min

[ price: 30.000,- Ft +VAT ] datasheet »

[ price: 32.000,- Ft +VAT ] képek »

model number: BM1318

48V - 500W BLDC(kefe nélküli)

1050 1/min; 4,5 Nm;

[ price: 29.950,- Ft +VAT ] datasheet »

model number: MY1020G

24V - 500W (nagyméretű mézpörgetőkhöz is)

36V - 500W

36V - 750W

[ price: 21.600,- Ft +VAT ] datasheet »

[ price: 21.600,- Ft +VAT ] datasheet »

[ price: 21.600,- Ft +VAT ] datasheet »

model number: MY1020GD

48V - 1000W

[ price: 24.950,- Ft +VAT ] datasheet»

Wheel motor for scooters

36V - 350W (BLDC), 16" wheel with drum brake

HUB motor

[ price: 30.000,- Ft +VAT ]

how it's made »

dimensions »

PERM DC and AC electric motor

Main parameters:

Power: 2.2 ÷ 7.2 kW

Voltage: 24 ÷ 72 V

Weight: 11 kg (very light!!!)

Rew.: 1080 ÷3480 1/min

datasheet >> drawings and performance curves >>

application samples:

for electric glider »

for electric boats »

More Kostov motors and kits »

Official pricelist (EXW Sofia) »

80V - 17.2 kW DC SepEx (17R-32077)

80V - 17.2 kW series DC (17R-31927)

144V - 23.9 kW series DC (17R-31750)

144V - 32.5 kW series DC (R20-31949)

[ price: 1.300,- USD*] performance curves » outline drawing »

[ price: 1.300,- USD*] performance curves » outline drawing »

[ price: 1.300,- USD*] performance curves » outline drawing »

[ price: 2.000,- USD*] performance curves» outline drawing »

The motor features are:
- optimized rpm so they are as close as possible to an internal combustion engine;
- larger and stronger commutators to minimize the possibility of lifting bars;
- class H insulation throughout the motors and heavy duty SKF bearings;
- dual shaft, thermal cut off sensor and stainless springs as standard;
- thermistor for real time monitoring of stator windings' temperature;
- sensor bearings to measure rpm (9" models only) or proximity rpm sensors;
- forced air cooling.

Why Neutrally Timed Interpoled Motors are Superior Technology:
Kostov has performed tests on an interpoled Kostov 9" 80V motor. One would think that 80V is relatively low and does not justify the use of interpoles. Indeed it may be so for low rpm, low amp forklift motors but the data shows this not to be true for EV conversion motors. For example most good EV motors have more than 4000rpm and 200A. The Kostov 9" 80V usually has collector temperature change of 120K in 60 minutes of work (up to 140K according to standard) at 280A. Removing the interpoles results in temperature change to 157K in JUST 10 minutes. Advancing the brushes by 8/12 degrees improves the number to 147/141K but still in only 10 minutes.

Should the brushed of an interpoled motor be advanced?
The interpoles create a magnetically neutral point whose position is independent of rotation direction, rpm, amps or voltage. The brushes are positioned exactly in this point. Advancing them will result in moving away from the neutral zone and will worsen commutation/arcing drastically. This, in turn, can have very bad consequences for the motor. How does interpoled motor construction differ from "standard" motors?

The change is in several aspects:
- the lack of interpoles creates a imbalance above 60-70V; the commutator is very hot while the armature/stator windings are cold;
- this calls for few bars in the commutator so that the bars can be big to dissipate heat;
- few commutator bars call for a much longer armature so that torque/rpm can be reasonable;
- the result is a long and heavy motor whose commutator is on the brink of melting but armature/stator windings stay uselessly cold. On the other hand, interpoles reduce brush arcing so that commutator temperature falls down. This allows a bigger bar count and shorter armature stack making the motor much lighter than its non-interpoled counterpart. Therefore for a comparable power, an interpoled motor has less weight (20-40%), bigger diameter but much shorter body and the ability to handle high voltage. Less weight means a cheaper motor and of course more range.

Kostov EV elektromos motorokat illesztő készlet

A villamos motorokat a gépjpricemű váltópajzsához kell rögzíteni, melyhez egy közdarab / adapter kell. Ennek elkészítése a mérőgépen felvett kontúr és furatpozíciók alapján történik (sajnos ezt az információt az autógypriceak nem adják ki).

Jelenleg a következő autókhoz, a korábban 3 vagy 4 hengeres belsőégésű motorok felfogatási helyére szerelhető közdarabjaink vannak:

• Suzuki Cultus
• Suzuki Swift
• Geo Metro
• Pontiac Firefly
• Maruti Esteem
• Chevrolet Sprint
• Holden Barina