XT40.721, XT40.722

– X-Series

Jan. 2007 / Rev. 1.0 DS-XT40.72x-EN All parameters are specified at 72V 13.3A, 3x400Vac (XT40.721) or 3x480Vac (XT40.722),

25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

12/19

Output protection

Electronically protected against overload, no load and short circuits *)

Output over-voltage protection

max. 91.1Vdc

In case of an internal power supply failure, a redundant

circuit limits the maximum output voltage. The output

shuts-down and automatically attempts to restart.

Input overvoltage shut-down

typ. 3x 470Vac

XT40.721

typ. 3x 560Vac

XT40.722

Degree of protection

IP 20

EN/IEC 60529

Penetration protection

> 3.5mm

e.g. screws, small parts

Over-temperature protection

yes

output shut-down, reset required

Input transient protection

MOV (Metal Oxide 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.

Input / output separation

Double or reinforced insulated. Voltages with a potential above 60Vdc are no

longer rated SELV or PELV and can be hazardous in some situations. Such voltages

must be installed with a protection to make the output voltage touch-safe.

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. 0.30mA

XT40.721: 3x400V, 50Hz, TN mains

< 0.35mA

XT40.721: 3x440V, 50Hz, TN mains

typ. 0.40mA

XT40.722: 3x480V, 60Hz, TN mains

< 0.45mA

XT40.722: 3x524V, 60Hz, TN mains

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 test 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 allowed.

To fulfill the PELV requirements according to EN60204-1 paragraph 6.4.1, PULS recommend that either the + pole or

the – pole shall be connected to the protective earth system. This helps to avoid situations in which a load starts

unexpectedly or cannot be switched off when an unnoticed ground fault occurs.