official WEHO English NDR-120 model table<\/a> identifies NDR-120-24 as a 24 V, 5 A output model. The exact approved sample is marked INPUT:100\u2013240 VAC 2.6 A, 50\/60 Hz, and OUTPUT:24 V followed by its original direct-current graphic and 5.0 A. Its approved drawing gives a 40 mm front width, 125.2 mm upright height and 113.5 mm front-to-rear envelope.<\/p>\nThe current public input row and approved sheet do not supply one reconciled sample specification. Keep the physical nominal marking, approved sheet revision and public description separately attributed; do not combine their broadest values into a guarantee. This article does not assign generic plastic-case, relay-contact or thermal marketing language to the actual metal-cased sample. Obtain the applicable exact revision and input instructions before accepting the rack branch.<\/p>\n
The output label is a model characteristic, not the measured consumption of the rack. It does not establish the number of pack positions, instrument channels or interface boards that may be operated. Those quantities remain outside this example until the actual receiver inventory and operating conditions are documented.<\/p>\nIllustrative test-bench scene, not a test result: an NDR-120-24 is shown on a workbench with instruments and hardware around it. No measurement, test condition, discharge profile, fixture or acceptance outcome is depicted; the battery test channel and the rack auxiliary branch must be assessed separately. Model identity and its ratings come from the complete source sheet.<\/figcaption><\/figure>\n<\/span>Build an auxiliary-receiver inventory by operating state<\/span><\/h2>\nList the actual 24 V receivers with full identifier, document revision, input limits and connection point. Separate startup behavior from sustained demand where the receiver documentation provides that distinction. Record which devices remain active during an idle rack state, which change state with a test request and which have a different supply interface altogether.<\/p>\n
The load record should remain traceable to those receiver documents. Do not infer demand from a rack’s size, a screen image or a battery pack capacity. A larger pack test does not automatically imply a larger auxiliary-electronics load, and an increased channel count should not be converted into an assumed current without the actual interface evidence.<\/p>\n
Keep the source conditions, receiver limits and distribution design together. Actual conductor routes, protective arrangements and installation requirements belong to the qualified rack design. The source’s repeated positive and negative terminals do not turn it into several independently regulated or independently protected test channels.<\/p>\n
<\/span>Preserve the evidence chain through a rack event<\/span><\/h2>\nIf the rack reports a communication interruption or interface reset, preserve the actual operating state and original records before replacing the auxiliary source. Identify which receiver was affected and whether the test instrument continued, stopped or reported a separate condition. A controller log is not, by itself, a measured source-terminal voltage waveform.<\/p>\n
Qualified investigation should keep source-terminal and receiver-input observations comparable in timing and scope. The record must state how the observation was obtained and what remains uncertain. This article supplies no reset threshold, transient trace, captured reading or proof that a particular source caused a battery-test interruption.<\/p>\n
The auxiliary branch and the battery energy channel may influence the same test sequence while remaining different electrical circuits. That is precisely why the architecture drawing and instrument records matter. Keep their connection and control boundaries explicit instead of treating every test-rack symptom as an ordinary supply fault.<\/p>\nEnd-of-line test rack: rear-rail mechanical-fit inspection before conductor termination in a separate dry electronics compartment. Four upper and three lower connections remain empty; this is not a powered battery cycle or an accepted channel interface.<\/figcaption><\/figure>\n<\/span>Use the complete rear-rail geometry and actual entry mouths<\/span><\/h2>\nThe complete approved mechanical drawing gives a 40 mm front width, 125.2 mm upright height and 113.5 mm depth. Its original rear fitting geometry supports a horizontal DIN rail fixed against the rack backplate behind the full housing. The rail is not a shelf under the source and must not pass through the center of the case. A narrow front face does not eliminate the depth and service-access requirements.<\/p>\n
The physical sample has four upper DC connection points, printed \u2212V, \u2212V, +V and +V, and three lower input points printed protective earth, N and L. The visible front circular openings provide screw access. Source photographs and the drawing identify separate top and underside conductor entry mouths; the roof honeycomb holes are ventilation, not cable routes. The original voltage adjustment sits above the smaller DC OK indicator on this NDR-120 sample.<\/p>\n
The laboratory-rack illustration shows a proposed connected auxiliary branch whose conductors route only to rack-electronics distribution. The second illustration shows a different end-of-line rack during mechanical-fit inspection before termination, with all four upper and three lower connection points empty. Neither scene establishes a powered charge-discharge test, accepted battery connection, verified hidden latch engagement or validated thermal operating orientation.<\/p>\n
<\/span>Make the rack procurement brief unambiguous<\/span><\/h2>\nA useful procurement package has separate sections for the programmable test instrument, pack fixture and auxiliary source. For the latter, provide the exact full model, approved source photographs, sample revision, actual input condition, receiver inventory, connection map and mechanical drawing. Include the rack enclosure and service-access requirements without assigning the source an unsupported ingress or certification rating.<\/p>\n
At receiving inspection, compare the original model, trademark, four-upper\/three-lower terminal order, adjustment control and fixing geometry with the approved evidence. If the delivered revision differs, reconcile it before assembly. Do not modify a label or article statement to make an unsupported electrical capability appear valid.<\/p>\nConceptual equipment architecture, not a complete circuit, accepted installation or test result.<\/figcaption><\/figure>\n<\/span>Frequently asked questions<\/span><\/h2>\n<\/span>Is NDR-120-24 the battery charge-discharge instrument?<\/span><\/h3>\nNo such role is established here. It is a conditional candidate for documented 24 V rack electronics. The actual battery energy channel requires its own instrument and fixture specifications.<\/p>\n
<\/span>Does 5.0 A establish the test rack’s channel count?<\/span><\/h3>\nNo. It is the exact source’s nominal output marking, not a pack-test current, receiver demand or channel-count approval.<\/p>\n
<\/span>Do the repeated upper DC connections create separate test channels?<\/span><\/h3>\nNo. The original four upper connection points have two negative and two positive markings, but that does not establish independently regulated channels or branch protection. The actual rack distribution and test-instrument design determine those functions.<\/p>\n
<\/span>Why is the second application not wired?<\/span><\/h3>\nIt illustrates a mechanical-fit stage before conductor termination in a different test rack, not a powered acceptance or successful battery cycle.<\/p>","protected":false},"excerpt":{"rendered":"
Specify programmable battery-test energy channels separately from documented 24 V rack auxiliary electronics, and preserve the exact source model and complete rear-rail mounting envelope.<\/p>","protected":false},"author":2,"featured_media":18943,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-18947","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/18947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/comments?post=18947"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/18947\/revisions"}],"predecessor-version":[{"id":18948,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/18947\/revisions\/18948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media\/18943"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media?parent=18947"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news_category?post=18947"}],"curies":[{"name":"\u0e2b\u0e19\u0e49\u0e32","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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