Operating instructions
K3G400-PA29-19
Translation of the original operating instructions
Connect the device only to circuits that can be switched off
using an all-pole disconnecting switch.
4.2.1 Prerequisites
;
Check that the data on the type plate match the connection data.
;
Before connecting the device, ensure that the supply voltage matches
the operating voltage of the device.
;
Only use cables designed for current according to the type plate.
For determining the cross-section, follow the basic principles in
accordance with EN 61800-5-1. The protective earth must have a
cross-section equal to or greater than the outer conductor cross-
section.
We recommend the use of 105°C cables. Ensure that the minimum
cable cross-section is at least
AWG26/0.13 mm².
Protective earth contact resistance as per EN 61800-5-1
Compliance with the resistance specifications as per EN 61800-5-1 for
the protective earth connection circuit must be verified in the application.
Depending on the installation situation, it may be necessary to connect
an additional protective earth conductor by way of the extra protective
earth terminal provided on the device. The protective earth terminal is
located on the housing and provided with a protective earth symbol and
a hole.
4.2.2 Power supply connection, fuse protection
Assignment of conductor cross-sections and the fuse protection required
for them (overload protection only, no device protection).
Nominal
voltage
Safety fuse
Wire cross-
section
Wire cross-
section
UL
mm²
AWG
3/PE AC 200-
240 VAC
15 A
1.5
16
3/PE AC 200-
240 VAC
20 A
2.5
14
3/PE AC 200-
240 VAC
30 A
4
12
* AWG = American Wire Gauge
4.2.3 Idle current
Because of the EMC filter integrated for compliance with EMC
limits (interference emission and interference immunity), idle
currents in the mains cable can be measured even when the
motor is at a standstill and the mains voltage is switched on.
●
The values are typically in the range < 250 mA
●
At the same time, the effective power in this operating state
(operational readiness) is typically < 5 W.
4.2.4 Residual current operated device
If the use of a residual current device (RCD) is required in your
installation, only universal residual current devices (type B or
B+) are permissible. Residual current devices (RCD) cannot
provide personal safety while operating the device, as is also
the case with frequency converters. When the device power
supply is switched on, charging current pulses from the
capacitors in the integrated EMC filter can lead to the instant
triggering of residual current devices. We recommend residual
current circuit breakers (RCCB) with an activation threshold of
300 mA and delayed tripping (super-resistant, characteristic K).
4.2.5 Leakage current
For asymmetrical power systems or if a phase fails, the
leakage current can increase to a multiple of the nominal value.
4.2.6 Locked-rotor protection
Due to the locked-rotor protection, the start-up current (LRA) is
equal to or less than the nominal current (FLA).
4.3 Connection in terminal box
4.3.1 Preparing connection lines for the connection
Strip the cable just enough so that the screwed cable gland is tight and
the terminals are relieved of strain. Tightening torque, see chapter 3.1
Product drawing.
NOTE
Tightness and strain relief depend on the cable used.
→ The user must check this.
Fig. 1: Recommended stripping lengths in mm (inside the terminal box)
Legend: CL = control lines
4.3.2 Connecting cables with terminals
WARNING
Terminals and connections have voltage even with a
unit that is shut off
Electric shock
→ Wait five minutes after disconnecting the voltage at all poles
before opening the device.
;
Remove the cap from the screwed cable gland.
Remove the cap only in those places where cables are inserted.
;
Mount the screwed cable glands with the seal inserts provided in the
terminal box.
;
Insert the line(s) (not included in the standard scope of delivery) into
the terminal box.
;
First connect the "PE" (protective earth) connection.
;
Connect the lines to the corresponding terminals.
Use a screwdriver to do so.
During the connection work, ensure that no cables splice off.
Item no. 55251-5-9970 · ENG · Revision 91062 · Release 2016-10-05 · Page 7 / 12
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com