GUDE introduces new PDU that increase operational reliability through programmable switching delay

Julkaistu 03/02/2021
Kirjoittajana Timeless Technology

19 inch power strips with controlled switching sequence

With the „Expert Power Sequencer“ GUDE Systems GmbH presents a series of power distribution systems for professional installations. The switchable power outlets are integrated into sturdy metal housings and are suitable for horizontal installation in 19-inch cabinets (1 height unit). They have 6 IEC C13 load outlets or 6 load outlets with safety socket on the front. Connected devices can be switched on sequentially and off in reverse order by an automatic switching routine. Pressing the switch on the front of the device triggers a 15-second switching sequence, which switches the individual sockets one after the other with a delay of 3 seconds each. These delay intervals between the switching operations can be increased individually to up to 60 seconds if required.

The Sequencer is also available in variants with integrated overvoltage protection (type 3) and mains filter. The overvoltage protection prevents defects on the device and on connected consumers, while the mains filter minimizes interference noise on connected loudspeakers or amplifiers.

Benefits for users

The voltage peaks that typically occur due to high inrush currents when several loads are switched on simultaneously are avoided with the „Expert Power Sequencer 8112“. Consequently, possible tripping of the upstream fuse in the supply line is prevented. In turn, when switching off sequentially, sudden abrupt changes in current in the supply line are prevented from causing faults in the circuit.

The power strip is used, for example, in audio/video installations with a power amplifier. The audio amplifier is connected to the last load output. The PDU now ensures that the amplifier is switched on last after the other components. When switching off in reverse order, it is switched on first, before the other components. The otherwise occurring banging noises, which can also damage loudspeakers and amplifiers, are avoided.
The user can connect an external pushbutton to the jack connector on the front to trigger the switching sequence from outside the 19-inch cabinet.

Features at a glance

6 load outputs switchable by switch on the device or by external pushbutton in a controlled switching sequence
Switching off connected loads with a delay of 3s between adjacent outputs
Time interval for each load output individually adjustable (up to 60s)
Current peaks during simultaneous switching operations and tripping of upstream fuses are prevented
Integrated overvoltage protection type 3 (according to EN61643-1) prevents damage to the device and connected loads
Jack connector allows connection of external switches and enables remote control of the switching routine
Integrated mains filter prevents interference currents and eliminates loss of signal quality for connected devices such as speakers, amplifiers and beamers
Low own consumption

4 variants of Expert Power Sequencer 8112

✔ 8112-1 6x IEC C13
✔ 8112-2 6x IEC C13 with overvoltage protection and mains filter
✔ 8112-3 6x safety socket type F (CEE 7/3)
✔ 8112-4 6x safety socket type F (CEE 7/3) with overvoltage protection and mains filter

Locations
AV environments with audio components such as in conference rooms, theaters and small meeting rooms, installations for displays and LED walls, AV installations in the smart home sector with amplifiers, speakers and beamers

Mounting
Network cabinets 19 inch, 1 height unit

Dimensions (LxHxDwithout mounting ears)
8112-1, 8112-3: 43.9 x 4.4 x 6.2 cm
8112-2, 8112-4: 43.9 x 4.4 x 11.2 cm (without mounting ears)

Accessories
Jack plug adapter, table/wall mount, IEC extension cable

Availability
Immediately available from the manufacturer and distributors

GUDE Systems – PDU virranjakeluyksiköt

PDU (virranjakeluyksikkö) on periaatteessa jatkojohto, joka asennetaan ennen kaikkea 19 tuuman palvelinkaappeihin joko vaaka- tai pystysuunnassa. Nämä kaapit ovat usein palvelinkokoja, joita käytetään palvelinkeskuksissa ja palvelintiloissa. PDU jakaa virran eri laitteille, kuten palvelimille ja kytkimille. Erilaiset laiteliitännät ovat mahdollisia, joista yleisimmät ovat IEC C13, IEC C19 ja turvapistorasiat.

PDU-laitteita on periaatteessa kahta tyyppiä:

✔ Passiivinen PDU: Se on yksinkertainen jatkojohto, joka vain jakaa virtaa.

✔ Aktiivinen PDU: Tehonjaon lisäksi aktiivisella PDU:lla on lisätoimintoja. Sitä voidaan valvoa ja ohjata dataliitännän kautta. Siten aktiivinen PDU kommunikoi LAN-liitännänsä käyttäen TCP/IP:tä sekä protokollia kuten SNMP, Modbus ja HTTP/HTTPS. Tällä tavalla PDU mahdollistaa etäohjauksen ja integroinnin valvontaohjelmistoihin.

Lisäksi PDU-laitteeseen voidaan liittää erilaisia antureita mittaamaan esimerkiksi laitetilan lämpötilaa ja kosteutta. Määrittämällä antureille kynnysarvot ja jos joku tallennetuista kynnysarvoista ylitetään, aktiivinen PDU-laite lähettää hälytyksen välittömästi sähköpostitse halutuille henkilöille.

Aktiivisten PDU:iden sisällä voidaan lisäksi tehdä ero kytkettävien ja mittarillisten virranjakeluyksiköiden välillä. Näitä PDU-laitteita kutsutaan usein myös älykkäiksi virtalähteiksi.