Motor Protection And Activation Types; Start-Up - salmson Rocsan lix Manuel D'installation Et Mise En Service

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6-wire connection cable
Wire no.
1
2
3
4
5
Green/yellow
5.6.4. Monitoring device connections
Each monitoring device must always be connected.
Temperature monitor for AC motor
• With the AC motor, the temperature monitor is integrated
in the motor and is self-switching. The monitor is always
active and does not have to be connected separately.
Temperature monitor for three-phase current motor
• Bi-metal sensors can be directly connected in the control
cabinet.
Connection values: max. 250 V(AC), 2.5 A, cos φ = 1
• When the threshold is reached, the unit must switch off.
For this reason, no warranty claims can be accepted for damages
to the winding resulting from unsuitable motor monitoring.
Connecting the optionally available leak electrode for
the oil separation chamber
• The leak electrode must be connected via an evaluation
relay. We recommend the NIV 101/A relay for this.
• The threshold is 20 kOhm. When the threshold is reached,
a warning must be given or the unit switched off.
CAUtIoN!
If there is only a warning, the unit could be irrep-
arably damaged by water entering. We always
recommend switching off!
5.7.

Motor protection and activation types

5.7.1. Motor protection
The minimum requirement for motors with a free cable end is a
thermal relay/motor protection switch with temperature compen-
sation, differential triggering and an anti-reactivation device in
accordance with VDE 0660 or the appropriate national regulations.
If the product is connected to electrical systems in which faults
frequently occur, we recommend installing additional protective
devices at the customer (over-voltage, under-voltage or phase
failure relays, lightning protection etc.). We also recommend
installing a residual current circuit breaker.
Local and national regulations must be adhered to when connect-
ing the product.
Terminal
Temperature monitoring
Temperature monitoring
U
V
W
Ground (PE)
5.7.2. Activation types
Direct activation
At full load, the motor protection should be set to the rated cur-
rent shown on the name plate. At partial load, we recommend that
the motor protection be set 5 % above the current measured at
the operating point.
Soft start activation
• At full load, the motor protection should be set to the
rated current at the operating point. At partial load, we
recommend that the motor protection be set 5 % above
the current measured at the operating point.
• The current consumption must be less than the rated
current during the entire operation period.
• Because of the upstream motor protection, the motor
should be started and stopped within 30 seconds.
• To avoid power losses during operation, bypass the elec-
tronic starter (soft start) after normal operation has been
established.
Products with plugs/switching devices
Insert the plug into the plug socket and press the on/off switch
or let the product switch on/off automatically by means of the
attached level control system.
Switching devices can be ordered as accessories for products
with free cable ends. In this case, also observe the instructions
enclosed with the switching device.
Plugs and switching devices are not flood-proof.
note the IP protection class. Always install switching
devices in such a way that they are protected from
flooding.
5.7.3. operation with frequency transformers
The product may not be operated on frequency transformers.
6.

Start-up

The "Start-up" section contains all the important instructions for
the operating personnel for starting up and operating the product
safely.
The following conditions must be adhered to and monitored:
• Type of installation
• Operating mode
• Minimum water coverage / max. submersion
If the machine has not been operated for an extend-
ed period, also check these conditions and rectify
any identified faults.
Always keep this manual either by the product or in a place spe-
cially reserved for it, where it is accessible for the entire operating
personnel at all times.
In order to prevent damage or serious injury when starting up the
product, the following points must always be observed:
• The product may only be started up by qualified, trained
persons. The safety advice must be followed at all times.
• All persons working on or with the product must have
received, read and understood this operating and mainte-
nance manual.
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