Siemens EF6 Series Manual do Utilizador descarregar pdf (Página 10)

Application areas:

Protection and monitoring of systems prone to

residual currents, e.g. caused by:

• Dust deposits or humidity

• Porous cables and lines

• Capacitive residual currents

Your advantages:

• Global applicability due to wide voltage range from

90 V AC to 690 V AC

• Variably adjustable threshold values for warning and

disconnection

• Freely parameterizable delay times and reset behavior

• Permanent display of the actual value and fault

diagnostics via display

• Removable terminal and optional screw-terminal

or innovative spring-loaded terminal

• High flexibility and space savings due to the

converter’s assembly outside the control cabinet

3UG4 Monitoring Relays

for residual-current monitoring

Over time, systems may experience insulation

problems caused by humidity or severe contam-

ination. These problems cause residual currents

which may result in fatal personal and also sys-

tem damage.

Using the 3UG4624 residual-current monitor-

ing relay in combination with a 3UL22 summa-

tion current transformer, such hazards can be

eliminated. Due to adjustable limit or warning

threshold values, the relay issues a warning

before the limit value is reached and switches

off when the limit value is exceeded after a

certain delay time.

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Siemens EF6 Series Manual do Utilizador Página 10