Portable Test Power Supply

Portable Test Power Supply

TheMOEORW-WKD10 Portable Test Power Supply is a general-purpose power supply device engineered for relay protection testing, high-voltage equipment testing, and loop testing in power systems. Built on advanced PWM switching power supply technology, this device integrates high-precision voltage regulation, LED digital display, and a 3-channel intelligent millisecond meter, delivering a wide voltage regulation range, high voltage stabilization accuracy, and strong current impact resistance. The millisecond meter, implemented via a dedicated single-chip microcomputer, can be triggered by either the power supply output signal or external switch input signals, enabling synchronous timing of 3 independent channels of external switch input signals, with significantly enhanced timing accuracy and intelligent operability.

TheMOEORW-WKD10 Portable Test Power Supply operates based on two core functional modules, with independent circuit design to ensure non-interfering, synchronous operation of power supply and timing functions:

1. Adjustable DC Power Supply Module: Adopting an advanced PWM (Pulse Width Modulation) switching power supply topology, the module converts AC input power into stable, continuously adjustable DC output power. The output voltage is regulated via a precision multi-turn potentiometer, with real-time voltage feedback and closed-loop control to maintain high voltage stabilization accuracy. The module is integrated with full-range hardware protection circuits for over-current, over-voltage, short circuit, overload, and over-temperature, ensuring safe and stable long-term operation.

2. Intelligent Millisecond Meter Module: Implemented via a high-performance single-chip microcomputer, the module achieves high-precision timing measurement with independent 3-channel signal acquisition and processing circuits. It supports two selectable trigger modes: power supply output start and external switch input start. After triggering, the module synchronously detects the on/off state changes of 3 channels of switch input signals, records the duration of each state, and stores up to 8 sets of time data for each channel, enabling accurate measurement of the action time interval of relays and actuators.

1. Integrated Dual-Function Portable Hardware Design

• Technical Design/Hardware Configuration: Integrates a general-purpose adjustable DC power supply and a 3-channel intelligent millisecond meter into a single monolithic device, with a compact structure that occupies a footprint smaller than an A4 paper sheet.
• Performance Index: Achieves synchronous power supply output and high-precision timing measurement without the need for additional auxiliary equipment, with a net weight of only 7kg for convenient on-site carrying and deployment.
• Practical Use Value: Eliminates the need for separate power supply and timing devices in field test scenarios, reduces equipment carrying burden for power system commissioning and maintenance teams, and significantly improves on-site test work efficiency.

2. High-Precision Wide-Range DC Power Output

• Technical Design/Hardware Configuration: Adopts advanced PWM switching power supply technology, closed-loop voltage regulation control architecture, and precision multi-turn potentiometer for stepless, continuous voltage adjustment.
• Performance Index: Delivers a wide DC output voltage range of 10V~260V, voltage stabilization accuracy ≤5%, conversion efficiency ≥85%, and supports long-term continuous 10A output without derating.
• Practical Use Value: Fully meets the 20% and 80% rated voltage test requirements for relay protection devices and switch operation circuits, as well as the DC test power demand for various 0~260V electrical devices, and can be directly used for charging DC panels and storage batteries in power distribution systems.

3. High-Precision 3-Channel Synchronous Timing Measurement

• Technical Design/Hardware Configuration: Implemented via a dedicated high-performance single-chip microcomputer, with independent 3-channel signal acquisition and processing circuits, and dual selectable trigger modes.
• Performance Index: Achieves 1ms timing resolution and accuracy, a measurement range of 1ms~60000ms, can synchronously record the on/off time and state of 3 channels of switch signals, and stores up to 8 sets of time data for each channel for subsequent traceability.
• Practical Use Value: Enables accurate measurement of the time interval from command reception to actual execution of relays and actuators in power systems, fully meets the action time test requirements of power system protection devices, and supports multi-channel synchronous measurement to improve test accuracy and work efficiency.

4. Intuitive Digital Display & Simplified Field Operation

• Technical Design/Hardware Configuration: Equipped with a large-size high-brightness LED digital display screen, independent precision adjustment knobs for voltage and current, and simplified operation buttons for the millisecond meter function.
• Performance Index: The display screen can simultaneously show the set voltage/current values and actual output voltage/current values, with clear digital display and stepless parameter adjustment via the multi-turn potentiometer.
• Practical Use Value: Enables field operators to quickly set and monitor output parameters in real time, simplifies the operation process of on-site tests, reduces the probability of misoperation in complex field environments, and improves the overall efficiency of test work.

5. Comprehensive Hardware Protection & Industrial-Grade Reliability

• Technical Design/Hardware Configuration: Integrated with full-range hardware protection circuits for over-current, over-voltage, short circuit, overload, and over-temperature, with industrial-grade component selection and stable anti-interference circuit design.
• Performance Index: Can withstand instantaneous current impact from inductive loads, automatically triggers protection actions in abnormal operating states, and ensures long-term stable operation in harsh power system field environments.
• Practical Use Value: Effectively protects the device itself and the tested equipment from damage caused by abnormal operating conditions, reduces equipment failure rate during long-term field use, and ensures the safety and continuity of on-site test work.

TheMOEORW-WKD10 Portable Test Power Supply is an ideal general-purpose test power supply for power systems, with a wide range of applications in the following power industry scenarios:1. 20% and 80% rated voltage withstand tests for relay protection devices and switch operation circuits2. Startup performance and dynamic characteristic testing of switching power supplies for relay protection devices3. DC experimental power supply for various electrical devices within the 0~260V voltage range4. Action time interval measurement of relays, contactors and actuators in power systems5. Floating charging and equalizing charging operations for DC panels and storage batteries in power distribution systems6. Field commissioning, routine maintenance, and type testing of power system secondary equipment

TheMOEORW-WKD10 Portable Test Power Supply is designed, manufactured and tested in full compliance with the following national and industry standards for power supply equipment:1. GB/T1471.4-93: General Technical Conditions for Standby Switching Power Supplies of Micro and Small Computer Systems2. SJ2811.1-87: Terms and Definitions, Performance and Rating for General DC Stabilized Power Supplies3. SJ2811.2-87: Test Methods for General DC Stabilized Power Supplies4. GB/T2423.1-2001: Basic Environmental Testing Procedures for Electric and Electronic Products

The standard delivery package of theMOEORW-WKD10 Portable Test Power Supply includes the following items:1. MOEORW-WKD10 Portable Test Power Supply Main Unit × 12. Matching Test Wire Kit × 13. Factory Test Report × 14. Operation Manual × 15. Product Qualification Certificate & Warranty Card × 1

To ensure the long-term safe and stable operation of theMOEORW-WKD10 Portable Test Power Supply, regular maintenance and inspection must be performed during equipment storage and on-site use, in accordance with the following requirements:

The cooling fan and bus aluminum electrolytic capacitor are the main wearing parts of the device. To ensure long-term safe operation, regular replacement is required. Under the standard operating conditions of ambient temperature below 30℃, load rate below 80%, and daily operation time of 12 hours, the replacement cycles are as follows:· Cooling Fan: Must be replaced after 3 years of continuous operation· Aluminum Electrolytic Capacitor: Must be replaced after 5 years of continuous operation