Z4-450-22 DC Electric Motor 630 kW 440 V 1525 A 700/1500 rpm
Sealocean Group Z4-450-22 DC electric motor is an industrial direct-current motor rated at 630 kW, 440 V, and approximately 1525 A, with a specified speed range of 700/1500 rpm. The motor is designed for demanding industrial drive systems where controlled speed, stable torque and reliable continuous operation are required.
The Z4 DC motor family is suitable for industrial machinery including conveyors, mills, crushers, extruders, cement equipment, rolling mills, hoisting systems, cranes, printing machinery and paper machinery.
Z4-450-22 Technical Specifications
| Item | Specification |
|---|---|
| Motor Series | Z4 DC Electric Motor |
| Model | Z4-450-22 |
| Rated Output | 630 kW |
| Rated Armature Voltage | 440 V DC |
| Rated Armature Current | 1525 A |
| Specified Speed | 700/1500 rpm |
| Excitation | Separate excitation as standard excitation arrangement |
| Nominal Field Voltage | 180 V |
| Insulation Class | Class F |
| Standard Protection | IP21S |
| Standard Dimensions | Designed in accordance with applicable IEC/GB requirements |
| Duty | Continuous duty S1 |
| Cooling | Forced ventilation; IC06, IC17 and IC37 available according to configuration |
| Applicable Standards | IEC / GB / applicable industrial standards |
Z4 Series DC Electric Motors
The Z4 series is an established family of industrial DC motors developed for applications requiring controllable speed and stable mechanical performance. The series covers a broad range of frame sizes, rated voltages and operating speeds and can be configured for different industrial drive arrangements.
Z4 motors can be used as prime movers for equipment where the drive system requires a wide speed adjustment range. Typical applications include lifting machinery, cableways, rolling mills, crane travel and hoisting mechanisms, plastic extruders, printing machines, paper machines and heavy process equipment.
For large frame sizes including Z4-315, Z4-355, Z4-400 and Z4-450, compensating windings can be incorporated according to the selected design. This can support stable commutation characteristics under demanding operating conditions.
Electrical Performance and Speed Control
The Z4 motor family can be supplied for commonly used DC voltage systems, including 160 V and 440 V. Other voltage configurations such as 220 V, 400 V and 660 V can be considered according to project requirements.
Typical rated speed classes include: 3000, 1500, 1000, 750, 600, 500, 400, 300 and 200 rpm. The actual operating range depends on motor model, armature voltage, field control and the selected drive system.
Speed regulation can be achieved through armature voltage control for the constant-torque region. Field weakening can be used for operation toward the constant-power region when permitted by the motor design and application. For selected configurations, stable low-speed operation can be achieved through appropriate drive and control settings.
Separate Excitation and Field Circuit
Separate excitation is the standard excitation arrangement for the Z4 series. The nominal field voltage is commonly specified at 180 V, while alternative excitation voltages may be available for special projects.
The field circuit should be protected against induced voltage when the excitation circuit is interrupted. The field protection arrangement and resistor selection must be coordinated with the actual excitation voltage and winding resistance.
For industrial projects, the excitation system should be reviewed together with the DC drive, control cabinet and protection system before commissioning.
Motor Construction and Insulation
The Z4 motor uses a robust industrial construction intended for continuous operation. The stator arrangement is designed to maintain accurate pole spacing and support reliable commutation.
The motor uses Class F insulation and an industrial insulation system designed to provide reliable dielectric performance and heat dissipation when the motor is operated within its specified thermal limits.
Laminated magnetic yokes are used in the Z4 construction. This design is suitable for applications supplied by controlled rectifier systems where ripple and rapid current variations can occur during dynamic load changes.
- Class F insulation system;
- industrial commutation design;
- laminated yoke construction;
- separate excitation;
- continuous-duty capability;
- industrial bearing and shaft arrangement;
- configurable cooling system;
- adaptable terminal-box orientation.
Z4 DC Motor Cooling Systems
The standard Z4 series uses separately powered forced ventilation. Depending on frame size and project requirements, different cooling arrangements can be considered.
| Cooling Type | Typical Configuration |
|---|---|
| IC06 | Separately ventilated motor with forced cooling air |
| IC17 | Forced ventilation configuration for applicable motor designs |
| IC37 | Forced cooling arrangement for selected industrial configurations |
| IC410 | Totally enclosed frame-cooled configuration for selected smaller frames |
| IC05 | Separately ventilated configuration for applicable frame sizes |
| IC01 | Self-ventilated open motor configuration for applicable frame sizes |
| IC666 | Totally enclosed motor with independent air-air heat exchanger |
| IC86W | Totally enclosed configuration with independent air-water heat exchanger |
The actual cooling system must be selected according to motor output, environmental conditions, heat dissipation requirements and installation layout.
Terminal Box and Accessories
The standard terminal-box arrangement is positioned on the right-hand side when viewed from the drive end. Alternative positioning at the top or left-hand side can be considered according to the customer's installation requirements.
A tachogenerator or other monitoring accessories can be installed at the non-drive end when required by the speed-control system.
For direct-coupled applications, flexible or elastic couplings should be used. The motor and driven machine must be accurately aligned to minimize excessive radial and axial loads on the shaft.
Six Engineering Application Cases
Case 1 — Z4-450-22 for Heavy-Duty Conveyor
Motor: Z4-450-22, 630 kW, 440 V, 1525 A, 700/1500 rpm.
A large bulk-material conveyor requires controlled acceleration and stable operation under changing material loads. The Z4-450-22 can be evaluated as the main DC drive where the required torque and speed characteristics match the motor.
The engineering review should include conveyor belt tension, gearbox ratio, starting torque, inertia, duty cycle and required speed range before final selection.
Case 2 — Z4-400-22 for Industrial Mill Drive
Motor: Z4-400-22.
Industrial mills can experience significant load variation during operation. A DC motor with adjustable speed can provide a practical drive solution for applications where process speed must be controlled.
The selection process should compare the mill's required shaft torque, operating speed, inertia and starting conditions with the motor's continuous and short-time capabilities.
Case 3 — Z4-450-22 for Cement Crusher
Motor: Z4-450-22, 630 kW, 440 V.
Cement crushers can impose fluctuating mechanical loads and high starting requirements. The Z4-450-22 provides a high-power DC drive option for a properly engineered crusher drive system.
Before replacement or new installation, the crusher torque curve, rotor inertia, coupling, gearbox and required acceleration time should be checked.
Case 4 — Z4-315-32 for Plastic Extruder
Motor: Z4-315-32.
Plastic extrusion lines require stable screw speed and controllable torque throughout the production process. A Z4 DC motor can be configured as part of an adjustable-speed extruder drive where the electrical control system supports the selected motor.
The engineering selection should consider screw diameter, screw speed, extrusion torque, production material and continuous operating temperature.
Case 5 — Z4-355-32 for Rolling Mill Auxiliary Drive
Motor: Z4-355-32.
Rolling-mill auxiliary machinery requires accurate speed control and reliable operation during repeated load changes. A Z4 motor can be considered for selected auxiliary drives after checking the required torque-speed curve and dynamic response.
The final design should coordinate the motor with the DC converter, excitation system, coupling and mechanical transmission.
Case 6 — Z4-450-22 Replacement for Existing DC Motor
Replacement motor: Z4-450-22, 630 kW, 440 V, 700/1500 rpm.
When replacing an existing large DC motor, matching the rated power alone is not sufficient. The replacement must be checked against shaft diameter, shaft extension, center height, mounting-hole dimensions, terminal-box position, cooling arrangement and electrical characteristics.
Sealocean can review the existing motor nameplate and installation drawing to determine the required mechanical and electrical configuration.
Industrial Applications
- Heavy-duty conveyors;
- Industrial mills;
- Cement crushers;
- Cement production machinery;
- Plastic extruders;
- Rolling mills;
- Hoisting machinery;
- Cranes and crane travel drives;
- Cableway equipment;
- Printing machines;
- Paper machines;
- Industrial process lines;
- Special-purpose variable-speed drives.
How to Select a Z4 DC Motor
For a new project or motor replacement, Sealocean recommends evaluating the complete drive system rather than selecting a motor only by output power.
| Required Information | Why It Matters |
|---|---|
| Rated power | Defines the continuous output requirement |
| Armature voltage | Must match the DC drive system |
| Armature current | Determines electrical loading and converter capacity |
| Rated speed | Defines the required operating point |
| Torque | Essential for matching the driven machine |
| Speed-control range | Determines armature and field-control requirements |
| Cooling | Required for thermal design |
| Installation dimensions | Critical for replacement applications |
| Environment | Determines protection and cooling requirements |
Z4 DC Motor Replacement Engineering
For replacement of an existing DC motor, customers should provide as much information as possible. A motor nameplate photograph and installation drawing are particularly useful for checking compatibility.
- Existing motor model;
- Rated power;
- Armature voltage;
- Armature current;
- Rated speed;
- Field voltage;
- Center height;
- Shaft diameter;
- Shaft extension length;
- Mounting-hole dimensions;
- Terminal-box location;
- Cooling type;
- Overall motor dimensions;
- Driven-machine information.
This information allows the engineering team to evaluate the electrical, mechanical and thermal compatibility of the proposed replacement motor.
Z4 DC Electric Motor Video
Watch the Z4 DC motor video for a visual reference of the industrial motor construction and application.
Resumen en Español
Motor de Corriente Continua Z4-450-22 de 630 kW
El Z4-450-22 es un motor eléctrico industrial de corriente continua con una potencia nominal de 630 kW, tensión de 440 V DC, corriente aproximada de 1525 A y velocidad especificada de 700/1500 rpm.
La serie Z4 está diseñada para aplicaciones industriales que requieren control de velocidad, funcionamiento continuo y una respuesta estable bajo cargas variables. Puede utilizarse en transportadores, molinos, trituradoras, extrusoras, plantas de cemento, laminadores, grúas y maquinaria de elevación.
Los motores Z4 pueden configurarse con diferentes sistemas de refrigeración, incluyendo soluciones de ventilación independiente y configuraciones aire-aire o aire-agua para determinados tamaños de bastidor.
Para una sustitución de motor existente, se recomienda proporcionar la placa de características, plano de montaje, dimensiones del eje, altura del centro, tensión, corriente, velocidad y sistema de refrigeración.
Resumo em Português
Motor Elétrico CC Z4-450-22 de 630 kW
O Z4-450-22 é um motor industrial de corrente contínua com potência nominal de 630 kW, tensão de 440 V CC, corrente aproximada de 1525 A e velocidade especificada de 700/1500 rpm.
A série Z4 foi desenvolvida para sistemas industriais que necessitam de controle de velocidade, operação contínua e desempenho estável sob cargas variáveis. As aplicações incluem transportadores, moinhos, britadores, extrusoras, equipamentos para fábricas de cimento, laminadores, guindastes e sistemas de elevação.
Dependendo do tamanho e das condições de operação, podem ser fornecidas diferentes configurações de refrigeração, incluindo ventilação independente, trocadores de calor ar-ar e sistemas ar-água para aplicações específicas.
Para substituição de um motor existente, recomendamos enviar a placa de identificação, desenho de montagem, dimensões do eixo, altura do centro, tensão, corrente, velocidade e sistema de refrigeração.
Frequently Asked Questions
What is the rated power of the Z4-450-22?
The specified Z4-450-22 configuration has a rated output of 630 kW.
What is the voltage of the Z4-450-22?
The specified motor configuration is rated at 440 V DC.
What is the rated current?
The specified Z4-450-22 has a rated armature current of approximately 1525 A.
What is the speed of the Z4-450-22?
The specified operating speeds are 700/1500 rpm. Final operating limits must be confirmed against the motor data and drive system.
Can the Z4 motor be used for conveyors?
Yes. Z4 motors can be considered for conveyor applications where the motor torque, speed, duty cycle, cooling and control system are correctly matched.
Can Z4 motors be used in cement plants?
Yes. Z4 DC motors can be applied to selected cement equipment such as conveyors, mills and crushers after engineering verification of load and environmental conditions.
Can the terminal box position be changed?
The standard terminal-box position is on the right-hand side when viewed from the drive end. Top or left-hand positioning can be considered according to the project configuration.
Can an existing DC motor be replaced by a Z4 motor?
A replacement can be evaluated after comparing the electrical ratings, mechanical dimensions, shaft configuration, cooling system, terminal-box location and driven-machine requirements.
Request a Z4 DC Motor Technical Quotation
Contact Sealocean Group for a technical quotation for Z4-450-22 630 kW 440 V DC motor and other Z4 series industrial DC motors.
For engineering evaluation, please provide the motor model, power, voltage, current, speed, load type, shaft dimensions, center height, cooling method, quantity and installation drawing.
Sealocean Group Online Resources
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Official Website: Sealocean Group Industrial Manufacturer
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