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Littelfuse SE-330HV-28-01 NGR Monitor 48VDC Dual SC Fiber IEC 61850 NC
$5,222$6,266 (-17%)
Littelfuse SE-330HV-28-01 NGR monitor — high-voltage neutral grounding resistor monitor (nominal 48 VDC supply) for resistance-grounded AC systems. Genuine Littelfuse product, authentic stock and technical support, available from Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330HV-28-01 is a high-voltage neutral grounding resistor (NGR) monitor designed for resistance-grounded AC systems. Powered from a wide DC supply (nominal 48 VDC; 28–72 VDC depending on revision), the unit delivers continuous NGR monitoring, shorted-NGR and ground-fault detection with programmable outputs. It supports modern protection networks with USB, IEC 61850 and dual SC fiber options, making it suitable for substations, distribution switchgear and industrial protection relay applications.
Key Features
- Continuous NGR monitoring with adjustable sensitivity in 1% increments.
- Fast detection of shorted NGR, ground faults and resistor failures to reduce transient overvoltage risk.
- Configurable output contacts: 1 Form A, 1 Form B or 2 Form C; selectable fail‑safe/non‑fail‑safe operation.
- Adjustable pickup 2–100% and configurable trip time delay 0.1–10 s for coordination.
- Analog 4–20 mA output and pulsing output (SE‑330 models); universal CT compatibility.
- Communications: USB, IEC 61850 and optional dual SC fiber; front‑panel or remote reset.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-28-01 |
| Component | Neutral Grounding Resistor Monitor (NGR monitor) |
| Supply Voltage | 28–72 VDC (nominal 48 VDC, depends on revision/configuration) |
| Output Contacts | 1 Form A, 1 Form B or 2 Form C (programmable; fail‑safe/non‑fail‑safe) |
| Pickup Range | Adjustable 2–100% (1% increments) |
| Time Delay | Adjustable 0.1–10 s |
| Analog Output | 4–20 mA |
| Pulsing Output | Yes (SE-330 models) |
| CT Compatibility | Universal CT compatibility |
| Communications | USB, IEC 61850, optional dual SC fiber |
| Reset | Front-panel or remote reset |
Applications
Protects neutral grounding resistors and detects ground faults in utility substations, medium-voltage distribution switchgear, industrial plants, generator sets and transformer-neutral protection for renewable-energy installations. Integrates with SCADA and IEC 61850 protection schemes for coordinated, fast response.
We supply genuine Littelfuse SE-330HV-28-01 units through authorized distribution channels. Wulan Dari (Batam) holds stock and ships quickly across Indonesia and Southeast Asia with competitive pricing and technical support. Contact us to check availability and request a formal quotation for your project.
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