To be able to use Seva-tec GmbH in full range, we recommend activating Javascript in your browser.
Seva-tec englisch
Seva-tec deutsch
Seva-tec englisch
Service/Help
Payment / Dispatch
Cancellation Right
Data Protection Declaration
Information on contract conclusion
Menu
Search
Search
My account
Shopping cart
0
€0.00 net*
Home
Products
About SEVA-tec
Online Calculator
Jobs
Contact
Imprint
FAQ
Download
Electric motors
Electric motors aluminum
Electric motors cast iron
Electric motors IP23
Single phase motors
DC motors
Pole changing motors
Brake motors
ATEX motors
Saw arbor motors
Flat motors
Medium voltage motors
Stainless steel motors
Gear reducer / geared motors
Worm gear reducer motors
Worm gears without motors
Helical gear motors M-series
Helical bevel gear motors K-series
Parallel shaft gear motors D-series
Planetary gear motors P-series
Horizontal helical gear unit H-series
Direct current - Worm gearbox with motor
Direct current - Helical geared motors
Direct current - Helical bevel gear motors
Direct current - Parallel shaft geared motors
Stainless steel worm gear motors
Stainless steel helical gear motors
Stainless steel bevel gear motors
Frequency inverter
LS-M100 - Frequency Inverter
LS-G100 - Frequency Inverter
LS-S100 - Frequency Inverter
LS - H100 - Frequency Inverter
LS-iS7 - Frequency Inverter
EASYdrive Inverter + Motor
EASYdrive Frequency Inverter
SMARTdrive Inverter + Motor
SMARTdrive Frequency Inverter
Soft Starter
DC-Motor Control
Adjustable gear combinations
Worm gear motor / handwheel speed control
Worm geared motor with integrated frequency inverter
Helical gear motors with handwheel speed control
Helical gear motor with integrated frequency inverter
Accessories electric motors
Forced cooling fan
Spring-loaded brakes
Encoder
Bearings, heating, etc.
Rain protection
Motor slide plates
Motor slide rails
Motor switch
Cam switch
Circuit breaker
Cable and plugs
Accessories gear motors
Worm gear CMRV-series
Worm gear EV-series
Helical gear M-series
Bevel gear K-series
Parallel shaft gear D-series
Stainless stell gear motors
Accessoires frequency inverter
Control panels
Breaking resistor
EMC- filter frequency inverter
Switch
Anschluss- und Steuerleitungen
Interface cards
Calculations direct current
Active power: P = V x I
Active power: P = I² x R
Active power: P = V² / R
Mecanical power: P = W / t
Calculations alternating current
Apparent power: S = V x I
Active power: P = V x I x cos φ
Reactive power: Q = V x I x sin φ
Aktive power factor: cos φ = P / S
Reactive power factor: sin φ = Q / S
Calculations three-phase
Apparent power: S = V x I x √3
Active power: P = V x I x cos φ x √3
Reactive power: Q = V x I x sin φ x √3
Active power factor: cos φ = P / S
Reactive power factor: sin φ = Q / S
Cable cross-section calculations
Direct-current: A = (2 x I x L) / (K x Δv x V)
Single-phase: A = (2 x I x L x cosφ) / (K x Δv x V)
Three-phase: A = (√3 x I x L x cosφ) / (K x Δv x V)
Torque calculations
Torque: Md = 9550 x P / n
Slip calculations
Slip: S = (Ns - N) / Ns x 100%
Energy saving calculator
Energy Saving Calculator
Ohm's law
Voltage: V = I x R
Current / Service
Electric Motors-Products
Electric Motors-Technology
Gear Motors-Products
Gear Motors-Technology
Frequency Inverter-Products
Frequency Inverter-Technology
General SEVA-tec Information
Catalogs - Gearboxes - Gear Motors
Catalogs / Data Sheets - Frequency Inverter
Videos - Tutorials - Frequency Inverter
Operating Instructions - Gearmotors
Operating Instructions - Electric Motors
Faq
1.1.0 Electric Motors - Technology
Nach Faq's suchen
Suchen
Faq - 1.1.0 Electric Motors - Technology
1.1.1 How is the active power “P” of a 400V aluminium motor calculated
How is the active power “P” of a 400V aluminium motor calculated
Mehr Infos
1.1.2 Which formula is used to calculate the reactive power of a 400V motor?
Which formula is used to calculate the reactive power of a 400V motor?
Mehr Infos
1.1.3 How is the apparent power “S” of a cast iron three-phase motor calculated?
How is the apparent power “S” of a cast iron three-phase motor calculated?
Mehr Infos
1.1.4 How is the active power factor cos φ of a 400V cast iron motor calculated?
How is the active power factor cos φ of a 400V cast iron motor calculated?
Mehr Infos
1.1.5 How are rotors with a feather key balanced on the IP23 electric motors?
How are rotors with a feather key balanced on the IP23 electric motors?
Mehr Infos
1.1.6 What does the IP23 protection class of the electric motor mean?
What does the IP23 protection class of the electric motor mean?
Mehr Infos
1.1.7 Is a progressive three-phase motor frequency inverter suitable?
Is a progressive three-phase motor frequency inverter suitable?
Mehr Infos
1.1.8 Are progressive electric motors also offered according to UL/CSA?
Are progressive electric motors also offered according to UL/CSA?
Mehr Infos
1.1.9 When is a centrifugal switch/ starting relay used with the 230V motor?
When is a centrifugal switch/ starting relay used with the 230V motor?
Mehr Infos
1.1.10 Can the speed of a single-phase motor be controlled with a frequency inverter?
Can the speed of a single-phase motor be controlled with a frequency inverter?
Mehr Infos
1.1.11 How does the Dahlander circuit work with a pole-changing motor?
How does the Dahlander circuit work with a pole-changing motor?
Mehr Infos
1.1.12 How are pole-changing motors connected electrically?
How are pole-changing motors connected electrically?
Mehr Infos
1.1.13 How does the spring-applied brake of the brake motor work?
How does the spring-applied brake of the brake motor work?
Mehr Infos
1.1.14 Which brake rectifiers are used in the standard brake motor?
Which brake rectifiers are used in the standard brake motor?
Mehr Infos
1.1.15 What does the designation “flameproof enclosure” mean for ATEX motors?
What does the designation “flameproof enclosure” mean for ATEX motors?
Mehr Infos
1.1.16 Are ATEX gear motors also built with a brake?
Are ATEX gear motors also built with a brake?
Mehr Infos
1.1.17 What does the operating mode S6 mean for circular saw motors?
What does the operating mode S6 mean for circular saw motors?
Mehr Infos
1.1.18 Do circular saw motors have temperature monitoring?
Do circular saw motors have temperature monitoring?
Mehr Infos
1.1.19 According to which standard are SEVA parallel-shaft gear motors manufactured?
According to which standard are SEVA parallel-shaft gear motors manufactured?
Mehr Infos
1.1.20 What protection classes and designs do the parallel-shaft gear motors have?
What protection classes and designs do the parallel-shaft gear motors have?
Mehr Infos
1.1.21 In which cooling types are medium-voltage motors offered?
In which cooling types are medium-voltage motors offered?
Mehr Infos
1.1.22 What are the most common rated voltages of medium-voltage motors?
What are the most common rated voltages of medium-voltage motors?
Mehr Infos
1.1.23 What are the technical features of stainless-steel motors?
What are the technical features of stainless-steel motors?
Mehr Infos
1.1.24 How is a stainless-steel motor connected properly?
How is a stainless-steel motor connected properly?
Mehr Infos
1.1.25 What are the advantages of permanently excited DC motors?
What are the advantages of permanently excited DC motors?
Mehr Infos
1.1.26 Are DC motors also available as special versions?
Are DC motors also available as special versions?
Mehr Infos
1.1.27 What are the efficiency classes for electric motors?
What are the efficiency classes for electric motors?
Mehr Infos
1.1.28 How is the advantage of an energy-saving motor calculated?
How is the advantage of an energy-saving motor calculated?
Mehr Infos
1.1.29 What do the indications on the motor nameplate mean?
What do the indications on the motor nameplate mean?
Mehr Infos
1.1.30 What factors must be kept in mind when assembling an electric motor?
What factors must be kept in mind when assembling an electric motor?
Mehr Infos
1.1.31 Are electric motors connected in a star or delta configuration?
Are electric motors connected in a star or delta configuration?
Mehr Infos