Rockwell-automation 592- E300 Overload Relay User Manual Uživatelský manuál stáhnout pdf (Strana 41)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 41

Installation and Wiring Chapter 2

Grounding

The following grounding recommendations are provided to ensure EMC

requirements during installation

• The earth ground terminal of the E300 Electronic Overload Relay shall be

connected to a solid earth ground via a low-impedance connection.

• Wire the green shield wire of the Cat. No. 193-ECM-ETR into the earth

ound terminal of the E300 control module.

• Installations employing an external ground fault sensor shall ground the

cable shield

at the sensor with no connection made at the E300 Electronic

Overload Relay.

• The PTC thermistor cable shield shall be grounded at the E300 Electronic

erload Relay with no connection made at the opposite end.

Short-Circuit Ratings

The E300 Electronic Overload Relay is suitable for use on circuits capable of

delivering not more than the RMS symmetrical amperes listed in the following

tables.

Table 6 - Standard Fault Short Circuit Ratings per UL60947-4-1 and CSA 22.2 No. EN60947-4-1

Table 7 - Short Circuit Ratings per EN60947-4-1

Overload Relay using Sensing Module Cat. No. Max. Available Fault Current [A] Maximum Voltage [V]

193-ESM-___-30A-C23

5,000 600

193-ESM-___-30A-C55

193-ESM-___-30A-E3T

193-ESM-___-30A-P

193-ESM-___-30A-T

193-ESM-VIG-30A-CT

592-ESM-___-30A-S2

193-ESM-___-60A-C55

193-ESM-___-60A-E3T

193-ESM-___-60A-P

193-ESM-___-60A-T

592-ESM-___-60A-S2

Overload Relay using Sensing Module Cat. No.

Prospective Short-

Circuit Current, I

[A]

Conditional Short-Circuit

Current, I

[A]

Maximum Voltage [V]

193-ESM-___-30A-C23

3,000 100,000 690