Building Protective System - Schneider
Order Code: MDG99610
Category: Schneider
Training Objectives Using an adjustable differential relay with separate ring core. Analysing the causes and effects of short circuit currents (calculation methods, choice of protection devices). Studying the operating principles of a therm...
SPECIFICATION
Training Objectives
- Using an adjustable differential relay with separate ring core.
- Analysing the causes and effects of short circuit currents (calculation methods, choice of protection devices).
- Studying the operating principles of a thermal-magnetic circuit breaker (tripping curves, breaking capacity).
- Using and drawing the tripping curve for a given rating.
- Implementing selectivity between upstream and downstream protection devices.
- Simulating situations of full selectivity, partial selectivity and non-selectivity.
- Studying the notions of selectivity with 2 or 3 stages (consequences and effect on an installation).
- Selecting the impedance of the fault loop via induction coils with modular values.
- Presenting, in a simplified way, the principle of breaking via an electrical arc under very low voltage.
- Limiting the short circuit current.
Presentation
This bench is designed to study and implement two selectivity strategies for protection devices in low voltage distribution systems:
- Ammeter selectivity.
- And chronometric selectivity.
Two isolating transformers enable limitation of the energy level involved when creating the deliberate faults required for the study.
Description
- The bench is mounted on a frame with locking wheels.
Contents
| Description | Quantity |
| Mimic diagram panels: ammeter selectivity and chronometric selectivity | 2 |
| Isolating transformers in the lower part: 220 V / 48 V and 220 V / 220 V | 2 |
| Set of induction coils (for ammeter selectivity. | 1 |
| Rheostat (for chronometric selectivity) | 1 |
Accessory Supplied
Set of Safety Leads: 1
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