Control electrical enclosure

equippedmobilemetal

Product overview
The fully automated Transformer Control Cabinet GY is a dedicated support console for transformer power-frequency withstand-voltage testing, designed to meet GB/T16927.1-2001. It integrates a control board and a voltage regulator in a compact, mobile enclosure to provide reliable, safe and repeatable test control.

Key features

• 7-inch high-resolution LCD showing real-time parameters (voltage, current, time), system status and prompts.
• Localized Chinese interface on-site for intuitive operation across applications.
• Tactile push-button controls for secure configuration and improved operational safety.
• Digital calibration replaces potentiometers for precise field adjustments (password-protected).
• Programmable test transformer ratio settings (button-configured, password-protected) to enable multi-voltage testing with a single console.
• Guided workflow with status prompts reduces need for manual reference during testing.
• Auto-Timing Mode: automatic timing start at target voltage, result display and auto-reset.
• Manual Timing Mode: operator-started timing with auto-reset at withstand completion.
• Manual voltage ramping (button-controlled) with automatic limit detection and overvoltage protection; ramp speed configurable (default 1 kV/s).
• Hybrid hardware/software noise suppression for industrial stability and EMI immunity.

Technical specifications

• Capacity: 3 kVA
• Input voltage: 0–220 V
• Transformer ratio: 500:1 (set according to the step-up transformer)
• Output voltage: 0–250 V
• Measurement voltage (instrument terminal): 0–100 V
• Voltage measurement accuracy: 1.0% FS ±3 digits
• Current measurement accuracy: 1.0% FS ±3 digits
• Timing range: 0–9999 s (special mode available for long-duration tests)
• Supply voltage: AC 220 V ±10%; 50 Hz ±2 Hz
• Operating environment: ambient temperature 0–50 °C; relative humidity ≤85% RH