{"product_id":"metering-ct-500a-5a","title":"Custom CT","description":"\u003ch1 data-start=\"239\" data-end=\"273\"\u003eCustom Current Transformers (CT)\u003c\/h1\u003e\n\u003cp data-start=\"275\" data-end=\"620\"\u003eWe supply a comprehensive range of custom built current transformers (CTs) designed for metering, protection, and specialised monitoring applications. Our CTs are engineered for high accuracy, reliability, and durability, making them suitable for switchboards, substations, industrial facilities, utilities, and power monitoring systems.\u003c\/p\u003e\n\u003cp data-start=\"622\" data-end=\"804\"\u003eAvailable constructions include solid core, split core, tape wound, busbar type, and resin cast designs, allowing flexible installation across a wide range of electrical systems.\u003c\/p\u003e\n\u003ch1 data-start=\"811\" data-end=\"856\"\u003eMetering Current Transformers (Metering CT)\u003c\/h1\u003e\n\u003cp data-start=\"858\" data-end=\"1077\"\u003eMetering CTs are designed to accurately measure primary current in electrical feeders and provide a proportional 1A or 5A secondary output to power meters, energy management systems, and power quality analysers.\u003c\/p\u003e\n\u003cp data-start=\"1079\" data-end=\"1192\"\u003eThese CTs ensure precise current measurement for energy monitoring, billing, and system performance analysis.\u003c\/p\u003e\n\u003cp data-start=\"1194\" data-end=\"1300\"\u003eMetering CTs are available in split core or solid core designs depending on installation requirements.\u003c\/p\u003e\n\u003cp data-start=\"1302\" data-end=\"1330\"\u003eAvailable types include:\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-start=\"1334\" data-end=\"1358\"\u003ePVC tape insulated CTs\u003c\/li\u003e\n\u003cli data-start=\"1361\" data-end=\"1378\"\u003eBusbar type CTs\u003c\/li\u003e\n\u003cli data-start=\"1381\" data-end=\"1397\"\u003eResin cast CTs\u003c\/li\u003e\n\u003cli data-start=\"1400\" data-end=\"1415\"\u003eRing type CTs\u003c\/li\u003e\n\u003cli data-start=\"1418\" data-end=\"1462\"\u003eCustom built CTs for specific applications\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1 data-start=\"1469\" data-end=\"1516\"\u003eSummation Current Transformers (Summation CT)\u003c\/h1\u003e\n\u003cp data-start=\"1518\" data-end=\"1647\"\u003eSummation CTs are used when multiple feeder currents need to be combined and measured by a single meter or monitoring device.\u003c\/p\u003e\n\u003cp data-start=\"1649\" data-end=\"1856\"\u003eThese CTs contain two or more primary windings, each connected to different feeders. The internal design sums the currents and delivers a single secondary output proportional to the combined current.\u003c\/p\u003e\n\u003cp data-start=\"1858\" data-end=\"1875\"\u003eExample ratio\u003c\/p\u003e\n\u003cp data-start=\"1877\" data-end=\"1893\"\u003e5 + 5 + 5 \/ 5A\u003c\/p\u003e\n\u003cp data-start=\"1895\" data-end=\"2013\"\u003eThis indicates that three 5A primary inputs are summed to produce a single 5A secondary output for a single meter.\u003c\/p\u003e\n\u003cp data-start=\"2015\" data-end=\"2128\"\u003eSummation CTs can be designed with multiple combinations of 1A or 5A inputs depending on system requirements.\u003c\/p\u003e\n\u003cp data-start=\"2130\" data-end=\"2165\"\u003eCustomisable parameters include\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-start=\"2169\" data-end=\"2184\"\u003eCurrent Ratio\u003c\/li\u003e\n\u003cli data-start=\"2187\" data-end=\"2203\"\u003eClass Accuracy\u003c\/li\u003e\n\u003cli data-start=\"2206\" data-end=\"2231\"\u003eNumber of feeder inputs\u003c\/li\u003e\n\u003cli data-start=\"2234\" data-end=\"2254\"\u003eBurden (VA rating)\u003c\/li\u003e\n\u003cli data-start=\"2257\" data-end=\"2281\"\u003eMaximum system voltage\u003c\/li\u003e\n\u003cli data-start=\"2284\" data-end=\"2295\"\u003eFrequency\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1 data-start=\"2302\" data-end=\"2353\"\u003eInterposing Current Transformers (Interposing CT)\u003c\/h1\u003e\n\u003cp data-start=\"2355\" data-end=\"2628\"\u003eInterposing CTs are used to match or convert current signals between devices with different current ratings or burden requirements. They are commonly installed when the existing CT output does not match the input requirements of meters, relays, or monitoring equipment.\u003c\/p\u003e\n\u003cp data-start=\"2630\" data-end=\"2785\"\u003eThese CTs provide accurate signal transformation and electrical isolation, ensuring compatibility between different measurement and protection devices.\u003c\/p\u003e\n\u003cp data-start=\"2787\" data-end=\"2803\"\u003eKey Features\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-start=\"2807\" data-end=\"2836\"\u003eHigh accuracy Class 0.5\u003c\/li\u003e\n\u003cli data-start=\"2839\" data-end=\"2883\"\u003eDesigned for AC current transformation\u003c\/li\u003e\n\u003cli data-start=\"2886\" data-end=\"2911\"\u003e1A secondary output\u003c\/li\u003e\n\u003cli data-start=\"2914\" data-end=\"2957\"\u003eCapable of accepting 5A input signals\u003c\/li\u003e\n\u003cli data-start=\"2960\" data-end=\"2997\"\u003eDurable resin cast construction\u003c\/li\u003e\n\u003cli data-start=\"3000\" data-end=\"3054\"\u003eSupplied with L brackets for easy panel mounting\u003c\/li\u003e\n\u003cli data-start=\"3057\" data-end=\"3101\"\u003eCustom ratios and configurations available\u003c\/li\u003e\n\u003cli data-start=\"3104\" data-end=\"3150\"\u003eHigher accuracy classes available on request\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1 data-start=\"3157\" data-end=\"3206\"\u003eProtection Current Transformers (Protection CT)\u003c\/h1\u003e\n\u003cp data-start=\"3208\" data-end=\"3451\"\u003eProtection CTs are specifically designed for protective relay systems and circuit breaker tripping applications. These CTs are built to accurately reproduce current during fault conditions, ensuring protection relays operate correctly.\u003c\/p\u003e\n\u003cp data-start=\"3453\" data-end=\"3638\"\u003eUnlike metering CTs, protection CTs must handle very high fault currents without saturating, allowing protection systems to detect abnormal conditions and isolate the fault quickly.\u003c\/p\u003e\n\u003cp data-start=\"3640\" data-end=\"3656\"\u003eKey Features\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-start=\"3660\" data-end=\"3722\"\u003eAvailable in a wide range of protection accuracy classes\u003c\/li\u003e\n\u003cli data-start=\"3725\" data-end=\"3778\"\u003eTape wound or resin cast ring-type construction\u003c\/li\u003e\n\u003cli data-start=\"3781\" data-end=\"3832\"\u003e5A secondary output (1A available on request)\u003c\/li\u003e\n\u003cli data-start=\"3835\" data-end=\"3897\"\u003eM6 or M8 secondary terminal studs for secure connections\u003c\/li\u003e\n\u003cli data-start=\"3900\" data-end=\"3958\"\u003eDesigned for high fault current withstand capability\u003c\/li\u003e\n\u003cli data-start=\"3961\" data-end=\"4024\"\u003eCan be customised to required burden ratings and dimensions\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4026\" data-end=\"4062\"\u003eProtection CTs are commonly used in:\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-start=\"4066\" data-end=\"4085\"\u003eFeeder protection\u003c\/li\u003e\n\u003cli data-start=\"4088\" data-end=\"4112\"\u003eTransformer protection\u003c\/li\u003e\n\u003cli data-start=\"4115\" data-end=\"4137\"\u003eGenerator protection\u003c\/li\u003e\n\u003cli data-start=\"4140\" data-end=\"4171\"\u003eSwitchgear protection systems\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1 data-start=\"4178\" data-end=\"4206\"\u003eCustomisable CT Parameters\u003c\/h1\u003e\n\u003cp data-start=\"4208\" data-end=\"4309\"\u003eAll CTs can be manufactured to suit your project requirements with configurable parameters including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"4313\" data-end=\"4328\"\u003eCurrent Ratio\u003c\/li\u003e\n\u003cli data-start=\"4331\" data-end=\"4347\"\u003eAccuracy Class\u003c\/li\u003e\n\u003cli data-start=\"4350\" data-end=\"4370\"\u003eBurden (VA rating)\u003c\/li\u003e\n\u003cli data-start=\"4373\" data-end=\"4398\"\u003eNumber of feeder inputs\u003c\/li\u003e\n\u003cli data-start=\"4401\" data-end=\"4425\"\u003eMaximum system voltage\u003c\/li\u003e\n\u003cli data-start=\"4428\" data-end=\"4455\"\u003eFrequency (50 Hz \/ 60 Hz)\u003c\/li\u003e\n\u003cli data-start=\"4458\" data-end=\"4496\"\u003eCore type (split core or solid core)\u003c\/li\u003e\n\u003cli data-start=\"4499\" data-end=\"4523\"\u003eMounting configuration\u003c\/li\u003e\n\u003cli data-start=\"4526\" data-end=\"4559\"\u003eInsulation and enclosure design\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"My Store","offers":[{"title":"Metering CT","offer_id":43142569164865,"sku":"CHKCT0029","price":300.0,"currency_code":"AUD","in_stock":true},{"title":"Summation CT","offer_id":43142569197633,"sku":"CHKCT0030","price":300.0,"currency_code":"AUD","in_stock":true},{"title":"Interposing CT","offer_id":43644958507073,"sku":null,"price":300.0,"currency_code":"AUD","in_stock":true},{"title":"Protection CT","offer_id":43644958539841,"sku":null,"price":300.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6667\/7825\/files\/Screenshot_17_1.png?v=1765152965","url":"https:\/\/www.chkshop.com.au\/products\/metering-ct-500a-5a","provider":"CHK Shop","version":"1.0","type":"link"}