Installation - Siemens 3RB22 Operating Instructions Manual

Installation

Ground fault
2 Installation
3 Connection
3.1 Connection diagram
14
The relay can optionally be configured for internal ground fault
detection by the 3RB2985-2..1 function expansion module for use
with motors with a 3-wire connection (without neutral connection).
For the dimension drawing, see graphic section
Mounting position: any
Mounting:
Snap-on mounting to 35 mm standard mounting rail acc. to
7
EN 50 022 (Fig. II), or to 3RB2906.. current measurement
module or
Screw mounting with push-in lugs as accessory (3RP1903,
7
).
Fig. III
The motor current is measured with the 3RB29.. current measurement
module. The connection of the motor lines is described in the
operating manual 3ZX1012-0RB00-1AA1. The electronic overload
relay is connected with the current measurement module using a
ribbon cable (3RB2987-.) (
Conductor cross-sections and torques in table in
Device circuit diagram (example: Contactor with latching) see
graphic section (
Fig. VII
For main current connection for single-phase operation, see
. No function expansion modules with ground fault detection
VI
can be used here.
).
Fig. VII
).
Fig. I
.
Fig. II
Fig.
3ZX1012-0RB22-1AA1