Neutral earthing resistor
Outdoor neutral earthing resistor: stacks of stainless grid elements on post insulators with mica plates and series links, in a ventilated 316 stainless enclosure (louvred sides, roof with overhang) on galvanised legs. Neutral entry by a cable box with ring CT and gland or by a roof bushing; LV earth bushing to the earth bar, two enclosure earth bosses, rating plate with the resistance from kV and amps, HV warning and tag. Energy (kV, A, s) sets the number of stacks; open removes a side panel.
Installation
Copies electrical/neutral-earthing-resistor.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.
Usage
import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { NeutralEarthingResistor } from './components/deck-twin/electrical/neutral-earthing-resistor'
export default function Scene() {
return (
<Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
<Stage>
<NeutralEarthingResistor />
</Stage>
<OrbitControls makeDefault />
</Canvas>
)
}
Props
| Prop | Type | Default | Range |
|---|---|---|---|
kv | 3.3 | 6.6 | 11 | 13.8 | 33 | null | |
amps | number (A) | null | 50 – 2000 |
seconds | number (s) | null | 5 – 30 |
entry | "cable" | "bushing" | null | |
open | boolean | null | |
tag | string | null | |
...group | position, rotation, scale… |
P&ID
Rectangle (IEC resistor) in the line from the transformer or generator star point down to the earth symbol (three shortening horizontal lines), often with a CT on the neutral.
IEC draws resistors as rectangles; ANSI drawings use a zig-zag. A rectangle in a neutral-to-earth connection is an NER; an earthing transformer is a zig-zag winding symbol instead.
kvampssecondsentrytagTypical suppliers
Vishay · Pestech. The geometry is generic and sized from public standards. It is not vendor CAD.
For agents
Machine-readable entry with props, ranges, defaults and ports:
Or fetch /r/neutral-earthing-resistor.json, or copy a ready-made instruction:
Add the Deck Twin "Neutral earthing resistor" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add neutral-earthing-resistor` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info neutral-earthing-resistor` for its props, ranges and ports. Render <NeutralEarthingResistor /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md