The Hebei Kepin Electric KPFT-2T Small Current Grounding Selector Unit manual provides overview, specifications, operation, and communication instructions.
The KPFT-2T is a micro‑computer grounding selector designed for single‑phase ground fault detection in 3 kV–66 kV power plants and substations. It combines transient and steady‑state analysis to improve line‑selection accuracy, especially in systems with arc‑suppressing coils, and offers alarm, remote transmission, and up to 40 output lines.
The manual describes system parameters, line settings, data queries, and time adjustments via the front‑panel keys, as well as communication options (RS‑232/RS‑485) and wiring diagrams for installation. It also lists the hardware dimensions, power requirements, and a full catalog of zero‑sequence current transformers that can be connected. This manual is written in Chinese.
| Maximum bus count | 4 segments |
|---|---|
| Maximum output lines | ≤40 |
| Startup voltage | 10 V–100 V (configurable) |
| Minimum measurement resolution | 10 mA |
| Ground current measurement accuracy | ±5 % |
| Power supply | AC or DC 220 V ±10 % 40 VA |
| Dimensions (H×W×D) | 134 mm × 430 mm × 235 mm |
| Weight | ≤20 kg |
The device can handle up to 40 output lines.
It provides both RS‑232 and RS‑485 interfaces that can operate simultaneously.
The startup voltage can be set between 10 V and 100 V.