Woodward WIC1 User Manual

WIC1 – CT Powered Time Overcurrent
and Earth Current Relay
Original Technical Manual WIC1 (Revision L)

Woodward WIC1 Specifications

General

Brand	Woodward
Model	WIC1
Category	Relays
Language	English

Summary

2.3 Product description

3.4 Connection Diagram for WIC1

4. Operating instructions

4.1 General information on the WIC1

Discusses WIC1's application in MV switchboards and user-friendly features.

4.2 User interface

Details the user interface for WIC1-1, WIC1-4, WIC1-2, and WIC1-3 versions.

4.3 CTs for the WIC1

Lists different wide-range CT types and their specifications for WIC1.

5. Technical Data, Characteristics and Features

5.1 Protective functions

Overview of protective functions like overcurrent and earth fault.

5.1.1 Minimal operating current and rated primary current

Defines minimal operating current and rated primary current settings.

5.1.2 Phase time over current protection

5.1.3 Earth current protection

5.2 Default Settings

5.5 Communication

5.5.1 Communication via PC adapter

Explains connection to PC via WIC1PC2 and WIC1PC3 adapters.

5.7 Technical Data

5.7.3 Accuracy

Details accuracy for tripping times, earth fault, and phase current measurements.

5.8 Characteristics and times

Normal Inverse and Very Inverse Characteristic Curves

Displays characteristic curves for Normal Inverse and Very Inverse time settings.

Extremely Inverse and Definite Time Curves

Long Time Inverse and HV-fuse Curves

RI-Inverse and FR-fuse Curves

5.8.2 Calculation formula for IMT characteristics

5.11 Selection of the CT transformation voltage ratio

5.12 Adjustment instruction for inverse characteristic

Estimation of the tripping time at inverse characteristics

6. Commissioning and Maintenance

6.7 Functional Test

6.7.2 Switching points for the overcurrent steps

6.7.3 Switching points for the short-circuit step

6.8 Special features for earth current tests

6.8.1 Switching points for the earth current step

Provides tables for setting IE> and Is values for earth current tests.

6.9 Test procedure by way of example

7. Product-Specific Features

7.1 Assignment of terminals

Lists terminal markings and their descriptions for WIC1 connections.