This document is an instruction manual for a Switch Power Supply manufactured by Changzhou Kaidi Electrical Co., Ltd. The manual provides a comprehensive overview of the product, including its function, technical specifications, installation, usage, maintenance, and waste disposal guidelines.

Function Description

The Kaidi AC/DC series switch regulated power supply is a modern power supply unit designed to convert AC input to DC output. It incorporates the latest technology, including a new PWM control chip and rapid TMOS switch tube, ensuring high reliability. The power supply is designed to meet the requirements of full voltage AC input and includes multiple protection features such as short circuit, overload, over-temperature, and over-voltage protection. A key feature is its low no-load power consumption, which is less than 0.5W at 240VAC, complying with the California Energy Commission (CEC) standards. This makes it suitable for a wide range of household appliances requiring a DC power supply.

Important Technical Specifications

The manual details electrical specifications for various models, including KDD Y008/KDD Y001B and KDD Y008/KDD Y001C.

Output Specifications:

Direct Voltage: 29V for all listed models.
Rated Current: 2A for KDD Y008/KDD Y001B, and 1.5A for KDD Y008/KDD Y001C.
Rated Power: 58W for KDD Y008/KDD Y001B, and 43.5W for KDD Y008/KDD Y001C.
Ripple & Noise (Maximum): 290mVp-p.
Voltage Accuracy: ±3%.
Line Regulation: ±1%.
Load Regulation: ±2%.

Input Specifications:

Startup, Rise Time: 6000mS, 20mS (full load).
Retention Time: 50mS/230V, 15mS/115V (full load).
Voltage Range: 90V-264VAC or 127V-370VDC.
Frequency Range: 47-63Hz.
Efficiency: ≥ 85%.
Surge Current (Maximum): 70A/230V.

Protection Features:

Over-current: Less than 8A, with Hiccup mode protection.
Over-voltage: Less than 42.4V, with output voltage restriction protection.
Over-temperature: Recovery at 85°C ± 10°C, with output voltage cut-off protection.

Environmental Conditions:

Operating Temperature: -5°C to 35°C.
Operating Humidity: 20-95% RH non-condensing.
Storage Temperature, Humidity: -5°C to 70°C, 20-95% RH.
Temperature Coefficient: ±0.3%/°C.
Vibration Resistance: 10-500Hz, 2G for 10 min/round, 60 min separately for X, Y.

Safety and Electromagnetic Compatibility:

Safety Specification: I/P-O/P 3KVAC.
Insulation Resistance: I/P-O/P 100MΩ/500VDC/25°C/70%RH.
Electromagnetic Interference, Harmonic Current, Electromagnetic Susceptibility: Not explicitly detailed but implied to meet standards.

Other Specifications:

Service Life: Average life is expected to be 6 years (12 hours operation).
MTBF: Not specified in detail.
Dimension (LWH):
- KDDY008B/KDDY008C: 1285838.2
- KDDY001B/KDDY001C: 1388338
Package: See the Comparison Table of Electrical Performance and Appearance for Different Modes.
Plug: Standard Mode: DIN-02.
Wiring: Standard Mode: NISPT-1, 200mm, 18AWG*2C.
Maximum Output Current: < 8A for KDDY008B/KDDY001B, < 5A for KDDY008C/KDDY001C.
Emergency Power Output: Indicated by a checkmark (√) for all models, implying presence.
Power Wire: NISPT-1, specified by clients.

Usage Features

The manual emphasizes several key usage features and restrictions to ensure safe and optimal operation:

Pre-use Precautions: Users must read the product introduction and instructions, observe wiring marks, and confirm input voltage compatibility before use.
Load Balancing: For power supplies with multiple output terminals, these are internally connected, and the output should be accessed with load balance.
Power Disconnection during Wiring: Always cut off the input power supply before wiring to prevent electric shock.
Ventilation and Dust-proofing: The switch power supply is a heating element and must be installed in a ventilated and dust-proof environment to prolong its service life. It should not be used in flammable, explosive, or humid environments (e.g., outdoors).
Heat Dissipation: The power supply cabinet often acts as a heat sink. During installation, maximize the contact area between the cabinet and the shelf for optimal heat dissipation, which extends the power supply's life.
Pre-power On Checks: Before powering on after installation, re-check all wiring terminals to ensure correct connections for input/output, AC/DC, single-phase/multi-phase, positive/negative poles, and voltage/current values. Reversal or misconnection is strictly prohibited.
Environmental Impact on Performance: The manual includes a diagram showing that as ambient temperature rises, the output power gradually decreases, and the service life shortens. The power supply's output power is 100% at -10°C to approximately 40°C, then linearly decreases to 25% at 70°C.
No Disassembly: Users are strictly forbidden from opening the cabinet or disassembling the product, as this can lead to electric shock, product damage, and hinder fault analysis.
Approved Use: The switch power supply must only be used with terminal devices approved by Kaidi. Unauthorized modifications or use of unapproved parts will void responsibility for damages.
Frequent On/Off Cycles: Repeatedly turning the power supply on and off will shorten its service life.
Plug Pin Definition: The DIN-2 plug has two pins: Pin 1 for +V and Pin 2 for -V.
Power-on Procedure: After confirming all conditions (correct connection, environmental parameters, approved terminal devices, correct voltage, normal operating environment, dry hands), plug the battery socket into a power socket. The indicator should turn on within 3 seconds, signaling normal operation.
Emergency Disconnection: In emergencies, the power supply can be immediately unplugged. Ensure the plug is easily accessible at all times.
No Destructive Disassembly: The power supply mainframe, power wire, and terminal connecting wire must not be destructively disassembled.

Maintenance Features

The manual outlines essential maintenance procedures to ensure the longevity and safe operation of the switch power supply:

Regular Checks: A regular check of the product is recommended every 6 months. This maintenance must be performed by an appliance specialist or specially trained personnel.
Inspection Points: During checks, inspect the following:
- Presence of cracks or fracture signs on the cabinet.
- Clamped or damaged signs on the connecting wire.
- Loose connectors and screws.
Troubleshooting Guide: The manual provides a troubleshooting table for common faults:
- Indicator not responding: Check connecting wire, ensure correct connection, or contact supplier/dealer.
- Sudden stop during operation: Check connecting wire, ensure normal connection, or contact supplier/dealer.
- High temperature: Cabinet temperature at 75°C or below is normal. If above 75°C, contact supplier/dealer.
- Indicator flashing: Check connecting wire, ensure normal connection, check terminal device for normal operation, or contact supplier/dealer.
Cleaning:
- Always unplug the power supply before cleaning.
- Clean dust from all surfaces with a humid rag, preventing water drops from entering the parts.
- Ensure connecting wires and plugs remain normally connected during cleaning.
- Do not clean with benzene, alcohol, or similar solvents.
- Prohibit watering, high-pressure washing, or splashing liquids onto the device to prevent damage.

Waste Disposal

Environmental Responsibility: Switch power supplies, being composed of electronic components, wires, metals, and plastics, must be disposed of according to relevant environmental laws of different countries.
Not Household Waste: The product cannot be disposed of as regular household waste.

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