Difference Between Integrating and Non-Integrating Ross Hill AC Modules

Last Updated: 01 January 2000 | Written by Gary Barnes | Hits: 0 |
User Rating / 5
Score

Your rating... 1 2 3 4 5

Rig electricians may be confused by the terms 'integrating' and 'non-integrating' with respect to Ross Hill AC Modules. This article explains the difference.

Older Ross Hill and Hill Graham SCR Systems may have been fitted with 'non-integrating' AC Modules, typically of revision W and earlier. Later systems would have been fitted with the newer 'integrating' type. Rigs which were originally fitted with 'non-integrating' modules may have been upgraded to the newer type, or have had the older revision modules modified. But what does 'integrating' and 'non-integrating' mean?

The 'integrating' or 'non-integrating' refers to the characteristic of the KW regulator portion of the AC Module.

The non-integrating type have only proportional control, which essentially means they are not as accurate in KW load sharing, and require the engine actuators' geometry to be set up so that the engines share KW load. Typically this set up is made so that the AC Module delivers 20-30mA throttle current at full-speed, no-load. This does not guarantee good load sharing across the range, and there may be an imbalance at light or heavy loads. In general, fine tuning is done to achieve the best load sharing at full load.

The integrating KW regulator was introduced to address these load sharing issues. By incorporating an integral term into the regulator load sharing is greatly improved across the range, and the need fo fine tune the actuator geometry is eliminated because the integrating term will compensate to achieve good load balance (the actuator still requires an initial set-up at full-speed, no-load). There is a slight trade-off in that the some throttle instability may be introduced which may require tuning out.

Can I mix Integrating and Non-Integrating modules on the same bus?

Emphatically NO. Load sharing will be poor or non-existent, and may even lead to reverse power trips and blackouts.

Can I replace all my modules with integrating types?

Yes you can - but be sure to include spare modules in the change-out. Changing to the newer type will make sourcing replacement spare modules easier and cheaper.

Can I upgrade my modules to the integrating type?

Yes you can - Contrelec has a modification scheme to convert these modules. Contact sales@contrelec.co.uk for more details. The down-side is that all modules have to be done at once because you can not mix module types, so the opportunity only arises at planned outages.

Can I convert an integrating module to non-integrating?

Not easily - but Contrelec have a standard modification scheme to achieve this. The down-side is that all modules have to be done at once because you can not mix module types, so the opportunity only arises at planned outages. Contact sales@contrelec.co.uk for more details.

Add Comment

* Required information

1000

Drag & drop images (max 3)

---UKUS---AfghanistanAlbaniaAlgeriaAndorraAngolaArgentinaArmeniaAustraliaAustriaAzerbaijanBahrainBangladeshBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBosnia and HerzegovinaBotswanaBrazilBruneiBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCentral African RepublicChadChileChinaColombiaCongoCosta RicaCroatiaCubaCyprusCzech RepublicDenmarkDjiboutiDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalklandsFinlandFranceGabonGambiaGeorgiaGermanyGhanaGreeceGreenlandGuatemalaGuineaGuinea-BissauGuyanaHaitiHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsraelItalyIvory CoastJamaicaJapanJordanKazakhstanKenyaKosovoKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaMadagascarMalawiMalaysiaMaliMauritaniaMexicoMoldovaMonacoMongoliaMontenegroMoroccoMozambiqueMyanmarNamibiaNepalNetherlandsNew ZealandNicaraguaNigerNigeriaNorth KoreaNorwayOmanPakistanPalestinePanamaPapua New GuineaParaguayPeruPhilippinesPolandPortugalPuerto RicoQatarRomaniaRussiaRwandaSan MarinoSaudi ArabiaSenegalSerbiaSierra LeoneSingaporeSlovakiaSloveniaSomaliaSouth AfricaSouth KoreaSouth SudanSpainSri LankaSudanSurinameSwazilandSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTogoTrinidad and TobagoTunisiaTurkeyTurkmenistanUgandaUkraineUnited Arab EmiratesUruguayUzbekistanVenezuelaVietnamWestern SaharaYemenZambiaZimbabwe

Type the numbers for four hundred seventy-two.

Notify me of new comments via email

Remember my form inputs on this computer

I have read and understand the privacy policy

I have read and agree to the terms and conditions

Powered by Commentics

x

Insert Bullet List

Please enter at least one item.

Item:

Item:

Item:

Item:

Item:

x

Insert Numeric List

Please enter at least one item.

Item:

Item:

Item:

Item:

Item:

x

Insert Link

Please enter the link of the website

Optionally you can add display text

x

Insert Email

Please enter the email address

Optionally add any display text

x

Insert Image

Please enter the link of the image

x

Insert YouTube Video

Please enter the link of the video

x

Image Upload

x

Privacy Policy

This policy contains information about your privacy. By posting, you are declaring that you understand this policy:

• Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
• Aside from the data entered into these form fields, other stored data about your comment will include:
  • Your IP address (not displayed)
  • The time/date of your submission (displayed)
• Your email address will not be shared. It is collected for only two reasons:
  • Administrative purposes, should a need to contact you arise.
  • To inform you of new comments, should you subscribe to receive notifications.
• A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.

This policy is subject to change at any time and without notice.

x

Terms and Conditions

These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:

• Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
• You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
• You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
• The administrator has the right to edit, move or remove any comment for any reason and without notice.

Failure to comply with these rules may result in being banned from further commenting.

These terms and conditions are subject to change at any time and without notice.

Comments

No comments yet. Be the first!