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Littelfuse SE-330HV-27-00 NGR Monitor, 48VDC, IEC 61850, NO
$5,222$6,266 (-17%)
Littelfuse SE-330HV-27-00 Neutral Grounding Resistor Monitor (NGR Monitor) — high-voltage protection relay with 28–52 V AC / 36–72 V DC supply and IEC 61850 communications. Genuine Littelfuse product from Batam, available with fast delivery across Indonesia & Southeast Asia.
The Littelfuse SE-330HV-27-00 is a Neutral Grounding Resistor (NGR) monitor / protection relay designed for high-voltage networks. This SE-330HV unit accepts 28–52 V AC or 36–72 V DC supply (nominal 48 VDC), supports IEC 61850 communications and provides continuous NGR supervision, shorted-resistor detection and ground-fault protection. Ideal for substations, power plants and industrial motor/distribution systems requiring reliable NGR monitoring and protection.
Key Features
- Continuous NGR monitoring with adjustable pickup sensitivity (2–100%) to avoid false trips.
- Shorted NGR and resistor-failure detection for fast isolation and reduced transient overvoltage risk.
- Communications: IEC 61850, USB, SC fiber and RJ45 for integration with substation automation.
- Programmable outputs with 2 Form A and 2 Form C contact arrangements and selectable operating modes.
- Analog 4–20 mA output and pulsing output (SE-330 models) for remote monitoring and trending.
- Universal CT compatibility, adjustable trip delay (0.1–10 s) for coordination with protection schemes.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-27-00 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | 28–52 V AC; 36–72 V DC |
| Contact Configuration | 2 Form A + 2 Form C (programmable) |
| Communications | USB; IEC 61850; SC fiber; RJ45 |
| Analog Output | 4–20 mA |
| Adjustable Pickup | 2–100 % (1% increments) |
| Time Delay | 0.1–10 s (adjustable) |
| CT Compatibility | Universal CT compatible |
| Protective Functions | IEEE 50G, 50N, 51G, 51N, 59N, 86 |
| Reset | Front-panel switch or remote N.O. contact |
| Conformal Coating | Yes |
| Pulsing Output | Available on SE-330 models |
Applications
Monitor and protect neutral grounding resistors in utility substations; detect ground faults on generator neutrals; provide backup NGR supervision in industrial power distribution; integrate into substation automation and IEC 61850 protection schemes.
We supply genuine Littelfuse protection relays through authorized distribution. Based in Batam, we deliver across Indonesia and Southeast Asia with competitive lead times. Contact us to request a quotation or confirm stock and delivery for SE-330HV-27-00.
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