Description
The GE WES5302 WES5302-111 is a high-density discrete input module designed for the WESDAC D20 and D200 substation controller series. It functions as a critical interface for monitoring the status of field devices such as circuit breakers, disconnect switches, and protective relays within a power utility environment.
Product Introduction
The GE WES5302 is engineered to provide reliable data acquisition from digital field contacts. It translates physical open/closed states into digital signals for the D20 processor. The WES5302-111 Module is specifically designed to handle “Status” or “Digital” inputs with high precision and includes advanced filtering to prevent false triggering caused by electrical noise or contact bounce in substation environments.
GE WES5302-111
Technical Specifications (Datasheet)
The following specifications define the hardware capabilities of the WES5302-111:
| Parameter | Specification |
| Model Number | WES5302-111 |
| Input Type | Discrete / Digital Status Inputs |
| Number of Channels | 64-Channel (High Density) |
| Input Voltage Range | 24V DC / 48V DC / 125V DC (Option Dependent) |
| Isolation | Optical Isolation for Surge Protection |
| Time Tagging | 1 millisecond resolution (Sequence of Events) |
| Filtering | Software-selectable debounce and chatter filtering |
| Interface | D20 Peripheral Bus |
| Form Factor | Standard D20 Module Housing |
| Country of Origin | USA / Canada |
Usage & Installation Instructions
To ensure accurate status monitoring and system safety, follow these guidelines:
- Mounting: Install the WES5302-111 into an available peripheral slot of the D20 or D200 chassis. Ensure the module is firmly seated into the backplane connectors.
- Field Wiring: Connect field contacts (e.g., auxiliary breaker switches) to the terminal blocks at the rear of the chassis. Use twisted-pair shielded cable to minimize electromagnetic interference.
- Wetting Voltage: Ensure the appropriate wetting voltage (typically 48V or 125V DC) is supplied to the field contacts as required by the module’s hardware configuration.
- Configuration: Use the GE WESMAINT™ software tool to define point names, polarity (Normally Open/Normally Closed), and to set the Sequence of Events (SOE) priority for each channel.
GE WES5302 WES5302-111
Common Questions Q&A
- Q: What is the difference between WES5302 and WES5302-111?
- A: The “-111” suffix typically denotes a specific revision or a factory-set hardware configuration regarding input voltage levels and connector styles.
- Q: Does this module support Sequence of Events (SOE)?
- A: Yes, it is optimized for SOE, providing 1ms time-stamped status changes for post-fault analysis.
- Q: How does the module handle “Contact Chatter”?
- A: The module features a programmable chatter filter that ignores rapid, repetitive oscillations of a contact that may occur during a mechanical failure.
Recommended Similar Models
For expansion or alternative I/O requirements within the GE D20/D200 ecosystem, consider the following:
- GE D20S: The standard 64-channel digital status input module.
- GE D20A: An analog input module for measuring current and voltage levels.
- GE D20K: A control output module used for executing trip and close commands.
- GE WES5301: A lower density or specialized variant of the status input module.
- GE D20ME II: The main processing engine that manages data from the WES5302.
