Datasheet

ManualsBrandsPilz ManualsAutomationInsulation Monitoring Relay

Electronic monitoring relays PMDsigma

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de

Insulation monitor

PMD s20

1001753-EN-02-2011-05

Gertebild

Bildunterschrift

The insulation monitor monitors the in-

sulation resistance of unearthed AC/

DC systems (IT systems). It meets the

requirements of EN 61557-8, IEC

60364-7-710 and DIN VDE 0100-710.

Approvals

Zulassungen

Unit features

Gertemerkmale

 Relay output:

2 auxiliary changeover contacts (C/

 Detects symmetrical and asymmet-

rical insulation faults

 Two insulation measuring circuits

 Connection for external switch con-

tacts to trigger the manual reset

and for function testing

 Unit parameter settings are menu-

driven and infinitely variable via a

display and rotary encoder with key

function (turn and push)

 Configuration is stored on a chip

card

 Status indicators (LEDs) for:

– Supply voltage (Power)

– Insulation resistance

–Fault

Unit description

Gertebeschreibung

The insulation monitor monitors the in-

sulation resistance of unearthed AC/

DC systems (IT systems). It meets the

requirements of EN 61557-8,

IEC 60364-7-710 and DIN VDE 0100-

710 and may be used:

 To monitor unearthed AC/DC sys-

tems (including on board ships)

 In medical locations

 As a trip device if insulation resist-

ances are outside the permitted

range

Block diagram

Blockschaltbild

PMD s20



A1 A2

Power

B1 B2

Reset Test

Feedback

Earth

Y1 Y2 Y3

11 21

12 14 22 24

Summary of content (8 pages)

PAGE 1
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Unit features Relay output: 2 auxiliary changeover contacts (C/ O) Detects symmetrical and asymmetrical insulation faults Two insulation measuring circuits Connection for external switch contacts to trigger the manual reset and for function testing Unit parameter settings are menudriven and infinitely variable via a display and rotary encoder with key function (turn and push) Configuration is stored on a chip card Status indicato
PAGE 2
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Function description The insulation monitor prevents hazardous insulation faults in galvanically separated systems. The insulation resistances are measured between the network phases and the operating earth. The measuring principle detects symmetrical and asymmetrical insulation faults. Relay outputs (K1 and K2) K1 and K2 operate in normally energised mode.
PAGE 3
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Only one insulation monitor should be connected to galvanically connected systems. A function test involving a real earth fault (resistance) must be carried out in order to check that the unit is properly connected. Information given in the “Technical details” must be followed. Preparing for operation Supply voltage UB: – Connect the supply voltage UB to A1/A2. The supply voltage UB can also be taken from the measuring circuit.
PAGE 4
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Application circuit DC Bl g u w A m h tria e b In 2 _ d L1 N 1L1 1L2 PE F1 T1 G1 ~ = F2 A1 A2 B1 B2 Re PMD s20 Re Test Reset FE Y1 Y2 Y3 11 12 14 21 22 24 Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.
PAGE 5
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Application circuit 3 AC Bl g u w A m h tria e b In 3 _ d L1 L2 L3 1L1 1L2 PE F1 T1 F2 A1 A2 B1 B2 PMD s20 Re Test Re Reset FE Y1 Y2 Y3 11 12 14 21 22 24 E1 Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.
PAGE 6
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Application circuit 3 AC/DC Bl g u w A m h tria e b In 4 _ d L1 L2 L3 m h tria e b In 1L1 1L2 PE alternativ alternative alternatif F1 T1 F2 G1 A1 A2 B1 B2 Re PMD s20 Test Reset FE Y1 Y2 Y3 11 12 14 21 22 24 E1 Parameter setting The menu settings are made on the unit's display via a rotary knob. You have the option to make the settings Inbetriebnahme_Drehknopf_Funktion on the knob by hand or with a screwdriver.
PAGE 7
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Notice Montage This data sheet is only intended for use during configuration. For installation and operation, please refer to the operating instructions supplied with the unit.
PAGE 8
Electronic monitoring relays PMDsigma Insulation monitor PMD s20 Environmental data Protection type Mounting (e.g.