SPX TG H15-50, Instruction Manual, Page: 48 / 110

48
U U
delta star
delta star
L1
L1
L2
L2
L3 L3
N
N
U1 V1 W1
U1 V1 W1
W2 U2 V2
W2 U2 V2
A.0500.351 – IM-TGH/07.02 EN (10/2015)
Line Motor
U (volt) 230/400 V 400 V
3 x 230 V delta –
3 x 400 V star delta
Electrical equipment, terminals and
components of control systems may
still carry live current when at rest.
Contact with these may be fatal,
resulting in serious injury or cause
irreparable material damage.
3.18.9.4 Electric motor drive
• Before connecting an electric motor to the mains check the current local regulations of your
electricity provider as well as the EN 60204-1 standard.
• Leave the connecting of electric motors to qualified personnel. Take the necessary measures
to prevent damage to electrical connections and wiring.
Circuit breaker
For safety work on a pump unit, install a circuit breaker as close as possible to the machine. It also
is advisable to place an earth leakage switch. The switching equipment must comply with current
regulations, as stipulated by EN 60204-1.
Motor overload protection
To protect the motor against overloads and short-circuits a thermal or thermo-magnetic circuit
breaker must be incorporated. Adjust the switch for the nominal current absorbed by the motor.
Connection
• Do not use a star-delta circuit with electric motors due to the required high starting torque.
• For single-phase alternating current, use motors with a “reinforced” starting torque.
• Ensure a sufficiently high starting torque for frequency-controlled motors and adequate
cooling of the motor at low speeds. If necessary, install a motor with forced ventilation.
3.18.9.5 Combustion engines
When using a combustion engine in the pump unit, see the engine instruction manual included in the
delivery. Contact the pump supplier if the manual is not included.
Irrespective of this manual the following must be respected for all combustion engines:
• Compliance with local safety regulations
• The exhaust of combustion gases must be screened to avoid contact
• The starter must be uncoupled automatically once the engine has started
• The pre-set maximum number of engine revolutions may not be modified
• Before starting the engine, the oil level must be checked
Note!
• Never run the engine in a closed area
• Never refuel the engine while it is still running