WEG SRW 01, User Manual

Page: 40 / 148

Installation and Connection
3-12 | SRW 01
3
The EL1(Ø 35 mm) earth leakage sensor can be assembled with M3 screws or directly on a DIN 35 mm rail using
the adapter accessory.
The EL2 (Ø 70 mm), EL3 (Ø 120 mm) and EL4 (Ø 210 mm) sensors can only be assembled using screws. The EL2
and EL3 sensors are fixed by M3 screws and the EL4 sensor is fixed by M6 screws.
Specify the earth leakage sensor as a function of the diameter of the cables that pass through the window; choose
the sensor with the smallest opening.
It is recommended to use the equivalence ratio between the Current Measurement Units (UMCT) or Current
Voltage Measurement Units (UMCT) and the earth leakage sensors (ELS) for installation as shown on the
Table
3.2 on page 3-12 .
Table 3.2: Equivalence between UMC/UMCT and ELS
Current Measurement Unit (UMC) or Current/
Voltage Measurement Unit (UMCT)
Earth Leakage Sensor (ELS)
SRW01-UMC0/UMCT0
SRW01-UMC1/UMCT1
SRW01-UMC2/UMCT2
SRW01-UMC3/UMCT3
SRW01-EL1
SRW01-UMC4/UMCT4 SRW01-EL2
SRW01-UMC5/UMCT5 SRW01-EL3
SRW01-UMC6/UMCT6 SRW01-EL4
NOTE!
If the measured earth leakage current is inferior to 50 mA, the value 0 (zero) will be indicated on
parameters P036 and P037.
3.15 SHORT CIRCUIT RANGES (UL)
The devices UL certificates, are appropriate to use in circuits with capacity to produce the symmetrical effective
current (RMS) below 200.000 A with maximum voltage of 600 V. (This value of short circuit current is related to
the use of non delayed fuses connected between the exterior enclosure/panel and the connector of the supply
source (L2)).