One electric motor with 8 customer-specific modifications.

This assignment made Kolmer's heart beat faster. All departments worked together like a well-oiled machine. A loyal customer ordered 8 electric motors, each requiring 8 customer-specific modifications. These motors are used as steering motors for bow thrusters on ships.

Our customer has stringent quality requirements, often installing 2 motors for real-time operation and backup. The 8 modifications and a DNV test serve two purposes: detection and control when the motor (bow thruster) is active, allowing for emergency stops or maneuvers in critical situations.

Base: progressive 3SIEL 112M-6A 3kW electric motor. We selected a progressive 3SIEL 112M-6A 3kW electric motor for this purpose, onto which the following modifications were applied:

1. New shafts: these shafts are made of C45 steel, thicker and longer than standard, specially designed for the brake with a customer-specific encoder, the Wachendorf encoder (a shaft position sensor).
2. Two standstill heaters, one front and one rear, preventing condensation formation during short activation periods.
3. Microswitch on brake: this measures whether the brake is engaged or not, sending a signal (LED/lamp indication) to the control panel in the wheelhouse.
4. 10 glands instead of the average 3 glands, using EMC glands for power supply to counteract RFI radiation (interference signals).
5. Forced cooling with an additional fan with its own control terminal box: due to the low rotational speed of these steering motors (bow thrusters), they are equipped with independent cooling to maintain constant motor temperature.
6. External cooling connected in a Steinmetz circuit: thanks to Steinmetz, the motor can operate on single-phase 230 volts. Other voltages possible with these multifunctional external coolings are: 3 x 230VD or 3x400VY.
7. B5 flange connection with smaller holes than standard, required for the customer-specific auxiliary gear. Flange holes are normally 15mm, these are specifically 13mm.
8. Wiring according to customer datasheets: cabling and component connections can be executed in multiple ways. In this case, we seamlessly adapt to the customer's requirements as per a predefined manual/datasheet.

Certificates: Additionally, the motors are tested and audited for the ship certification, DNV (Det Norske Veritas). This certificate confirms that the motor has been tested and audited according to the requirements of this ship classification. An extensive motor heat-run test based on the accompanying motor and factory documentation is part of this process.

Need a specially customized electric motor? Or quickly require a standard motor? Contact us. 0341 369696 or email info@kolmer.nl

Speed Specials Service: Fast quotation and delivery from stock of 16000 electric motors, customer-specific modifications, and 24/7 warehouse service for stationary motors.

WHAT MOTOR DO YOU NEED?