Installation Guide
TG-0259_9 TM4 CO200-A3 Installation Guide
© Dana TM4 inc., 2020-2022
4.5 Electrical installation
This section describes the procedures in order to safely undertake the electrical installation of the MCU.
Although the final installation sequence will be decided by the system integrator, we give a suggested
sequence in Section 4.5.2.
Note: It is imperative that you are aware of the safety risks involved in this type of electrical installation;
before you start, refer to Section 4.5.1 for more detailed information.
4.5.1 Safety instructions related to electrical installation
Carefully read all safety instructions before making any electrical connections in the system.
WARNINGS This product generates high-voltage that can cause an electric discharge or electrocution
resulting in injury or death.
Before manipulating the product, verify that:
• The traction battery (high-voltage battery) is disconnected.
• The auxiliary battery (12 V/24 V battery) is disconnected.
Incorrect assembly or an incorrect electrical connection during assembly of this product can
cause electrocution and/or fire.
The assembly and connections must conform to the instructions included in this Technical Guide.
Care must be taken when manipulating electrical equipment.
This product must be installed by qualified and authorized personnel in accordance with applicable
vehicle standards and industry practices. Always use appropriate insulation and protection before
manipulating the product even when the product is disconnected from a high-voltage source.
ESD sensitive – do not touch connector pins
The internal electronics are sensitive to electrostatic discharges.
Risk of electric shock – do not open the MCU.
The electrical installation of the system does not require the MCU to be opened or disassembled.
Risk of electric shock – capacitor stores hazardous energy.
Wait 10 minutes after disconnecting all sources of supply prior to removing cables and/or servicing.
The MCU uses common mode capacitors between the high-voltage DC bus and the chassis.
Some apparatuses can cause dangerous frame current to pass through these capacitors if they
are connected to a high-voltage DC bus.
Always measure the voltage between the high-voltage DC bus and the chassis using appropriate
protection and insulation before manipulating the product.
The MCU uses differential mode capacitors between the positive high-voltage DC bus (+) and the
negative high-voltage DC bus (-). Even when the product is disconnected from the high-voltage
source, these capacitors can hold a voltage high enough to cause an electric discharge or death.
Always measure the voltage between the positive high-voltage DC bus (+) and the negative high-voltage
DC bus (-) using appropriate protection and insulation before manipulating the product.
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