Current limiting resistor (current transformer CT, potential transformer PT) "KBL-□□"
KBL-□□
Resistors used together with grounding transformers! Please use them first. Instruments for distribution boards, control panels, sub-distribution boards, and panels.
KBL-□□ is our current-limiting resistor. The current-limiting resistor (CLR) installed on the tertiary side of grounding-type instrument transformers is necessary when using selective ground fault relays (SGR) and directional ground fault relays (DGR). It generates the active power required to operate the SGR and DGR, absorbs the third harmonic generated by the GPT tertiary broken delta connection circuit, and suppresses abnormal neutral point conditions, potential oscillations, and neutral point instability phenomena in ungrounded circuits.
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basic information
【Specifications】 - Primary Voltage: 220/√3V to 6600/√3V - Secondary Voltage: 110/√3V or 190/√3V - CLR Value [Ω]: Refer to the lineup below - CLR Capacity [W]: Refer to the lineup below - Allowable Current [A]: Refer to the lineup below - Material of the main body: Iron case - Dimensions: 172×141×104 (Width×Height×Depth. Unit: mm) - Weight: 1300g
Price information
KBL-□3: 8,550 yen KBL-□4: 9,750 yen
Price range
P1
Delivery Time
P3
※There is an agency in Yokohama, Japan, that has stock available.
Applications/Examples of results
It is a resistor used together with a grounding transformer.
Detailed information
Line up（2）
| Model number | overview |
|---|---|
| KBL-□3 | ・Primary voltage: 220/√3V~6600/√3V ・Secondary voltage: 110/3V n (primary/secondary): 3.5, 6.0, 6.9, 7.2, 7.6, 52.0, 103.9 ・CLR value [Ω]: 251, 145, 125, 120, 115, 17, 8 ・CLR capacity [W]: 48, 83, 97, 101, 105, 724, 1448 ・Allowable current [A]: 0.44, 0.76, 0.88, 0.92, 0.96, 6.58, 13.16 |
| KBL-□4 | ・Primary voltage: 220/√3V~6600/√3V ・Secondary voltage: 190/3V n (primary/secondary): 2.0, 3.5, 4.0, 4.2, 4.4, 30.1, 60.2 ・CLR value [Ω]: 748, 433, 374, 358, 343, 50, 25 ・CLR capacity [W]: 48, 83, 97, 101, 105, 724, 1448 ・Allowable current [A]: 0.22, 0.44, 0.51, 0.53, 0.55, 3.81, 7.62 |
catalog（1）
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Company information
Our company was founded in 1979 and has grown from producing early analog (needle-type) instruments to digital instruments, as well as products that allow for the observation of electrical data via wireless and the internet. This development reflects the strong commitment of our employees to walk alongside our customers. Additionally, we are making proactive investments in technology development at our affiliated research institute and are thoroughly operating our business processes with a customer-centric approach. We are dedicated to meeting the diverse needs of our customers through more differentiated services. In our case, we have become well-known in South Korea for our measuring instruments (analog, digital meters, and CT, VT). We have been exporting to Japanese companies for over a decade, and we have registered with Ipros to introduce our products to more Japanese customers. In 2022, we registered as a corporation in Tokyo and have since relocated our corporate office to Osaka under the name "LIGHTSTAR JAPAN." We also have Japanese staff on-site, and we look forward to serving you.
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