GFD233A 3BHE022294R0101 ABB Control Processing Input Module

The application guide provides detailed methods for calculating overcurrent and earth fault relay settings and their coordination using the GFD233A 3BHE022294R0101 relay. Here are some key points from the guide:

1. GFD233A 3BHE022294R0101 Relay Overview:
   • The GFD233A 3BHE022294R0101 is a self-powered numerical relay primarily used in distribution networks.
2. Load or Branch Circuit Protection:
   • Before setting up the overcurrent and earth fault relays, individual load or branch circuit protection should be applied according to local electricity authority guidelines.
3. Definitions:
   • Start Current: Minimum current at which the relay senses overcurrent and initiates operation.
   • Definite Minimum Time (DMT): Relay operates after a set time delay, regardless of fault current magnitude.
   • Inverse Definite Minimum Time (IDMT): Operating time varies with fault current magnitude. Time multiplier setting (k) can be adjusted based on relay options.
4. Mounting Requirements:
   • The relay is designed for wall mounting with dimensions of 160x96x150 mm and weighs 800g without HMI (Human-Machine Interface) and 900g with HMI.
   • Mounting is facilitated by six 4mm² drill holes, and detailed mounting instructions are provided in section 7.6.
5. Connection Wiring:
   • Wiring to the relay should use single-strand wire or stranded wire with insulated crimp terminals to maintain insulation requirements.
   • Recommended wire cross-sections for wiring are 0.2 – 2.5 sq. mm for both single-core and finely stranded wires.

Overall, the guide emphasizes practical application and provides instructions for proper relay setup, mounting, and wiring to ensure effective protection within distribution networks.