Insulation monitor - GMWISO 1.05 - gts generator. technik. systeme.

Insulation monitor - GMWISO 1.05Insulation monitor - GMWISO 1.05GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-251

Insulation monitor - GMWISO 1.05CopyrightNo part of this Operation Manual may be reproduced, published or transmitted inany form or by any means without the express permission of Generator-TechnikSchwäbisch Gmünd GmbH &Co. KG.© 2001 Generator-Technik Schwäbisch Gmünd GmbH & Co. KG. All rightsreserved.General informationTechnical modifications after date of printing are not considered. Subject tochange without notice.Issue date: August 2001Manufacturer's addressFor any information and support concerning technical problems, services andorders please contact us.Generator-Technik Schwäbisch Gmünd GmbH & Co. KGZiegelfeldstraße 18D-73563 MögglingenTelefon +49 7174 89 80 0 0Telefax +49 7174 89 80 0 25www.gts-generator.cominfo@gts-generator.com2GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-25

Insulation monitor - GMWISO 1.05ConceptionGMWISO insulation monitors are insulation monitoring modules taking especially intoaccount the increased safety need and the current regulations for portable,combustion?engined stand?by electricpower units.Ungrounded, portable stand-by electric-power units with the optimum system ofprotection "Fuse disconneetion with insulation monitoring and cut-off" realised withthe GMWISO insulation monitor may also be commissioned by non-electricians andbe operated in areas with an increased threat to persons (for ex. damp areas).Several consumers may be connected to the stand-by electric-power generator atthe same time. A "built" and measured grounding device is not necessary. Extensiveelectricity distribution supply networks are admissible.GMWISO insulation monitors have been developed especially for the difficultoperating conditions in the case of direct mounting to portable stand-by electricpowergenerators.GMWISO insulation monitors can be supplied as individual modules for OEMs to beintegrated into newly-designed electric-power generators and as retrofitting kit forgenerators already available on the market.Product descriptionThe GMWISO insulation monitors serve for the insulation monitoring in ungroundedA.C. networks (as well as chained threephase networks in star connection) ofportable stand?by electric-power generators. With GMWISO insulation monitors, it iseasy to generate electric-power generators according to regulations (for ex.GW308, VDE 1) 0100.728) with little time needed for assembly and wiring.The distribution supply network of the stand-by electric-power generator mayinclude pure A.C. consumers as well as non-electrically separated, D.C. fed devices(for ex. frequency converter, threephase to single-phase rotary welding converter,D.C. operated solenoid valves and brakes etc.). Spurious releases due to deviceswith D.C. components connected to the generator are largely impossible because ofthe new circuit technology with automatic sign-dependant sensitivity adaptation. Itmust, however, be taken into account that faulty insulation on the D.C. side canlead to a release, but with diverging sensitivity. The threshold value indicated forthe devices for faulty insulation is valid for faults in the A.C. network. In theTechnical Data of the GMWISO insulation monitors you flind a typical threshold valueindicated for a faulty insulation on the D.C. side of the connected devices. Theindications are valid for the D.C. circuits used mostly.Regarding the threshold value and the behaviour during switch-off time GMWISOinsulation monitors have been matched with the valid regulations and are fail-safe.The stand-by electric-power units must be built according to DIN 6280, part 10, andon the altemator side laid out according to VDE 0530. They must be laid out andtested for the network structure (IT network) provided for in VDE 0100, part 728/4.2.2. with the method 4.2.4.2.1.1)*VDE = German Electric Engineers RegulationsGTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-253

Insulation monitor - GMWISO 1.05according to DIN 62 80T.10§5.7.1.1 are met the generator is suitable forretrofitting.− GMWISO insulation monitors have been conceived for altemators with a largelysinusoidal output voltage. lf altemators with a high relative harmonic contentor very asymmetric courses of the curves are used, an influence on theresponse level is possible. In such cases the usability must be checked beforethe use.− Altemators with speeial voltages or special frequencies cannot be equipped withGMWISO insulation monitors. See also "Technical Data GMWISO 1.05".− lf the altemator has got several electrically separated output windings, for eachoutput circuit an individual insulation monitoring must be carried out. It is usuallynot allowed to use combined welding electric power generators with nonelectricallyseparated welding winding or generators with load winding tap withinthe scope of the VDE rules.− The installation, the ftmctional test and the first commissioning of stand-byelectric-power generators retrofit with GMWISO insulation monitors may only becarried out by an electrician.− GMWISO insulation monitors must be installed carefully (particular attention mustbe paid to abrasion when the connecting lines are installed) and the correctconnection must be tested before the commissioning. A wrong connection maylead to the destruction of the GMWISO insulation monitor!− The functional test during the first commissioning should be carried out with anextemal test resistance (R test= 22 kΩ/tol.: ± 5 %/at least 5W). For this all liveconnections of all sockets (including a possible neutral wire) must be connectedbriefly − one after the other − with the PE via the resistance. In all cases thecut-off must be effected after max. 1 s.− In connection with GMWISO insulation monitors it is only allowed to use loadcurrent releases remote releases approved by GMW.− Only VDE tested devices with approval for a direct connection to the stand-byelectric-power generator network are admissible for the extemal test buttonand signal lamp. When selecting these components, for the accommodation ofthe components and regarding the power switch, the system of protectionrequired for the switch box of the generator must be complied with. Onlysignal lamps which are resistant to vibration (glow lamp or LED) should beused.− Before the stand-by electric-power generator is handed over to the client, hemust be informed about the particular features and the operation of thegenerator with the system of protection "potential segregation with insulationmonitoring and cut-off".− The supplied test protocol must be handed over to the client of the stand-byelectric-power generator (completely filled in) together with the brief operator'sguide, as a supplement to the Operator's Guide.GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-255

Insulation monitor - GMWISO 1.05− Before insulation or voltage tests are carried out at the stand-by electric-powergenerators (for example in the case of high-voltage tests/earth contact tests) orat parts of the installation, the GMWISO insulation monitor must be separatedfrom the generator and all parts of the installation for the duration of the test.− In each electrically connected distribution system only one insulation monitor maybe connected (i. e. in the case of an insulation monitoring with GMWISOinsulation monitor at the generator, socalled "Solid-rubber distributors" or similarwith insulation monitor are not admissible!) because insulation monitors can havean influence on each other.− It is possible to connect D.C. powered devices (solenoid valves, brakes,converters etc.) in the network of the stand-by electric-power generator to bemonitored. It must be taken into account, however, that faulty insulation in theD.C. circuit is registered with an increased sensitivity in both current directions.− Distributions and devices with built-in residual current operated devices are notfail-safe with ungrounded, portable stand-by electric-power generators (due tothe missing grounding installation/potential segregation), but they are notnecessary when the system of protection "potential segregation with insulationmonitoring and cut-off" is used.− If the GMWISO insulation monitor is used within the scope of GW308 a briefoperator's guide for the insulation monitoring must be attached at the stand-byelectric-power generator pointing out the daily functional test.− Further inforination and regulations for the use of generators with the system ofprotection "Fuse disconnection with insulation monitoring and cut-off" can befound in VDE 0 100, part 728 and GW 308.− Additional provisions or regulations limiting the operation of the generator in thecase of particular operating conditions (for ex. rules for prevention of accidents/VBG, VDE 0706, conditions by the (German) employer's liability insuranceassociation or similar) must be taken into account.6GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-25

Insulation monitor - GMWISO 1.05Warnings and informations on generatots with GMWISOSince the stand-by electric-power generators equipped with the system ofprotection "Fuse disconnection with insulation monitoring and cut-off" have mainlybeen conceived for the use by non-electricians, it must be possible for all users ofthe stand-by electric-power generator to safely operate the stand-by electric-powergenerator and to test the additional safety measure against direct contact. Bothmust be identified at the device.At least the following instructions must be attached visibly and permanently to theelectric-power generator.COMMENT: Depending on the electric-power generator or its purpose, it might benecessary to attach or enclose further instructions. The exemplary text refers tothe operation of the GMW-SYNCHRO stand-by electric-power generator.Short operator's guide/information− Used safety measure: "Fuse disconnection with insulation monitoring and all-poloCut-off".− This device can be operated without grounding.− The following tests must be carried out daily with the motor running:1. Unplug all devices; open the cover; safety switch in position "ON",2. press the test button,3. check whether the safety switch has triggered and the signal lainp has beenactivated,4. stop the electric?power generator,5. safety switch in position "ON", close the cover.− NOTICE: The electric-power generator may only be used if the safety switchtriggered during the test.− The total length of all lines connected to the electric-power generator mustntexceed 250 m.− If several stand-by electric-power generators are used or if the general networkis also available, the networks mustn't be connected to each other.− Corrective maintenance at the electrical components of the stand-by electricpower generator and at the electric equipment may only be carried out byelectricians.− For further safety and operating inforination, please refer to the Operator'sGuide and the relevant regulations.GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-257

Insulation monitor - GMWISO 1.05Technische DatenNominal supply voltage(supply/voltage/output) U NAC 230 VOperating area0.7..1.2 x U NNominal supply frequency (V./M./A.) f N50 HzOperating area35 Hz..65 HzOwn consumption P 0.5 VA typ.Operating time/Operating mode ED 100 %/S1=DB(duty cycle)Measuring D.C. voltage (R ISO6 4) U MDC 11 VHolding wire current (at R ISO=23 kΩ) I MDC 125 µALeakage holding-wire current (R ISO=0) I MKDC 165 µAD.C. internal resistance R I80 kΩImpedance (at 50 Hz) Z I100 kΩMax. admissible external D.C. voltage U Nx 2.4Max. admissible test voltage (1s)AC 1500 VThreshold value (static i. e. t A6 4 = VDE 0413T2/$6.1.1.)U1, U2 or L1, N/PE () R ISO30 kΩ ± 15 %L2, L3/PE () R ISO40 kΩ ± 15 %response lag (sudden modification t Amax< 1 sR ISO6 4 9 R ISO# 23 kΩ = 100 kΩ/V -Kriterium VDE 01000T728/§4.2.4.2.1)ExampleThreshold value in the case of faulty insulation/behind rectifiers E1 (L1, N) R ISO100 kΩ ± 25 %(examples) B2 (L1, N) R ISO125 kΩ ± 25 %M3, B6 R ISO400 kΩ ± 25 %Outputfor automatically switching load current releases/remote releasesOutput current max. AC 1A (semiconductor output TRIAC ch.) to connection (2)Admissible ambient temperaturefor storage T AmbSt-30°C..+85°C/243 K..358 Kfor function (VDE 0413T2/§4.6.) T Amb-10°C..+70°C/263 K..343 K(0..+40°C/f.gr. VDE 0413T2§4.4)Fitting positionanyAttachment Fast attachment on mounting rail DIN 50022;chassis assembly with adapter (on request)weight m approx. 180 g (including connecting line)8GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-25

Insulation monitor - GMWISO 1.05Dimensions (height x width x depth)ConnectionConnection methodSystem of protection(DIN40050)Build77 mm x 35 mm (2 T-N) x 44 mmapprox. 400 mm connecting line with end spliceswith 5 leadsLoad current switch - supply circuit identical withvoltage circuit (input voltage - switched internally)IP 65 for compund-filled moduleShakeproof in the completely compound-filled modulehousingRegulations Device corresponds to VDE 0413 part 2/1.73;Applicationfor applications acc. to VDE 0100T728§4.2.4.2.1as well as GW 308GTS GmbH & Co. KG, Ziegelfeldstraße 18, D - 73563 Mögglingen,Telefon: +49 (0) 7174/89800-0, Telefax: +49 (0) 7174/89800-259