Description
The Terasaki HT21-001 is a dedicated remote control device designed for use with Terasaki TemPower2 and other compatible Air Circuit Breaker (ACB) systems. This module provides operators with the ability to safely perform remote switching (Open/Close) and status monitoring of circuit breakers from a distance, significantly enhancing workplace safety by keeping personnel outside the arc flash boundary during manual operation sequences.
📋 Technical Specifications
- Model Number: HT21-001
- Manufacturer: Terasaki Electric
- Primary Function: Remote Operation of Air Circuit Breakers (ACB)
- Control Voltage: Compatible with standard Terasaki ACB control coils
- Interface: Manual push-button control with status LED feedback
- Dimensions: 6.0 x 4.0 x 2.5 inches (Approx. handheld/panel mount housing)
- Weight: 0.9 lbs (0.4 kg)
- Country of Origin: Japan
⚙️ Application Areas
- Low Voltage Power Distribution Systems
- Industrial Switchgear Panels
- Data Center Electrical Infrastructure
- Marine and Offshore Power Control
- Automated Load Management Systems
🛠️ Operating Instructions & Guidelines
- Installation: Ensure the unit is wired to the ACB control circuit according to the official Terasaki wiring diagram. Use shielded control cables to prevent induced noise from high-voltage busbars from causing unintended operation.
- Environmental Requirements: Operate in clean, dry environments. While the unit is designed for industrial use, it should be housed in a protected enclosure or control desk to avoid mechanical impact.
- Maintenance: Regularly test the continuity of the control wiring and the functionality of the push-buttons. Verify that the “Close” and “Open” signals are properly interlocked with the ACB’s internal safety features.
⚡ Power Sequence & Operation
- Power-On Sequence: 1. Ensure the main ACB control power (AC or DC) is active. 2. Verify that the HT21-001 unit is properly connected to the terminal block. 3. Confirm the ACB is in the “Ready” state (springs charged). 4. Check that no local lockout mechanisms are engaged.
- Power-Off Sequence: 1. Cease remote operations. 2. If performing maintenance on the ACB, use the local mechanical lockout/tagout (LOTO) procedure on the breaker itself, rather than relying solely on the remote control module.
- Step-by-Step Operation: 1. Select the desired command (Open or Close) using the integrated buttons. 2. Observe the status feedback light to confirm the command was accepted and executed. 3. Monitor the physical position indicator on the ACB front panel to verify the breaker state has changed.
❓ Frequently Asked Questions (Q&A)
- Why does the breaker fail to close when I press the button? Verify the closing spring is fully charged. If the springs are not charged, the internal electrical interlock will prevent the control signal from engaging the closing coil.
- Can I operate multiple breakers with one HT21-001? No, the HT21-001 is designed for dedicated control of a single circuit breaker unit. Attempting to bridge it to multiple units may overload the control circuit.
- What is the purpose of the LED status indicator? The indicator provides visual confirmation of the circuit status (e.g., green for Open, red for Closed). If the light fails to illuminate, check for a blown control fuse or a failed indicator bulb/LED.
- Is the HT21-001 intrinsically safe? It is a standard industrial control device, not intrinsically safe. Do not use it in explosive or hazardous (ATEX) atmospheres.
