The WHB-52A series microcomputer-based comprehensive protection device can be configured through different software settings to provide protection for lines, motors, capacitors, and plant transformers. The device is preset for line protection upon delivery, with a default initial password of "9999". Users must ensure to set the device type according to engineering requirements during actual use. The specific setup method is as follows:

1.2 Product Features

Wide-range operating power supply design from 85V to 500V, compatible with both AC and DC at 220V and 110V.

Digital input power uses high-voltage design with strong anti-interference capability, supporting both AC and DC at 220V and 110V.

Protection current designed for universal 5A and 1A applications, eliminating the need to specify protection current ratings when ordering.

Utilizes independent high-precision ADC for high protection accuracy and strong anti-interference capability.

Relay outputs feature matrix configuration, allowing on-site programming for convenient use.

Adopts an all-in-one design concept with four built-in protection object types for ease of use.

Standard RS485 communication interface supporting multiple protocols including IEC103 and MODBUS.

Compact integrated chassis design, suitable for installation in various cabinet types.

Features graphical LCD with Chinese display and menu-driven operation.

Eight sets of protection settings with secure and convenient setting group switching.