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Protection features, Safety, Dielectric strength – Rockwell Automation 1606-XLE960DX-3N Power Supply Reference Manual User Manual

Page 13

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All parameters are specified at 24V, 40A, 3x480Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.

Rockwell Automation Publication 1606-RM024A-EN-P — April 2014

13

Bulletin 1606 Switched Mode Power Supplies

16. Protection Features

Output protection

Electronically protected against overload, no-load and short-circuits

*)

Output overvoltage protection

max. 29.9Vdc

in case of an internal power supply defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.

Input overvoltage shutdown

typ. 3x 560Vac 1606-XLE960DX-3N

Degree of protection

IP 20

EN/IEC 60529

Penetration protection

> 3.5mm

e.g. screws, small parts

Over-temperature protection

yes

output shut-down with automatic restart

Input transient protection

MOV (Metal Oxyde Varistor) and active transient blocker

Internal input fuse

not included see section 25.4

*) An audible noise may be heard during a no-load, overload or short circuit event.

17. Safety

Input/output separation

SELV IEC/EN 60950-1

PELV
double or reinforced insulation

EN 60204-1, EN 50178, IEC 60364-4-41

Class of protection

I PE (Protective Earth) connection required

Isolation resistance

> 5MOhm

input to output, 500Vdc

PE resistance

< 0.1Ohm

between housing and PE terminal

Touch current (leakage current)

typ. 0.40mA

13x480V, 60Hz, TN mains

< 0.45mA 3x524V, 60 Hz, TN mains

18. Dielectric Strength

Fig. 18-1 Dielectric strength

A B C

Type test

60s

2500Vac

3000Vac

500Vac

Factory test

5s

2500Vac

2500Vac

500Vac

Field test

5s

2000Vac

2000Vac

500Vac

A

C

B

L1

Input

Earth

Output

-

+

L3

L2

Type tests and factory tests:

Conducted by the manufacturer. Do not repeat these tests in
the field!
Rules for field test:

Use appropriate test equipment which applies the voltage
with a slow ramp! Connect L1, L2 and L3 together as well as
all output poles.

The output voltage is floating and has no ohmic connection to ground. Grounding of output is allowed.
To fulfill the PELV requirements according to EN60204-1, paragraph 6.4.1, we recommend that either + pole or
the – pole be connected to the protective earth system. This helps avoid situations in which a load starts
unexpectedly or cannot be switched off when an unnoticed ground fault occurs.