The Tektronix A621 is a passive, high-current AC current probe designed for use with oscilloscopes and digital multimeters. It measures AC currents from 100 mA to 2000 A peak over a frequency range of 5 Hz to 50 kHz. Featuring a large clamp-on jaw, it accommodates conductors up to 54 mm in diameter, making it ideal for industrial and power utility applications.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | BNC (integrated cable) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Passive (no battery or external power required) |
| Operating Temperature | -10 °C to +55 °C |
| Dimensions (W×H×D) | 97 mm × 231 mm × 36 mm |
| Weight | 0.65 kg |
| Maximum Busbar Size | 50 mm x 5 mm (2.0 in. x 0.2 in.) |
Electrical & Measurement Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 5 Hz to 50 kHz (-3 dB) |
| Maximum Peak AC Current | 2000 A |
| Maximum Continuous AC Current | 1000 A RMS |
| AC Current Range | 100 mA to 2000 A peak |
| Output Sensitivity Settings | 1 mV/A, 10 mV/A, 100 mV/A |
Safety & Isolation Ratings
| Parameter | Value |
|---|---|
| Maximum Working Voltage | 600 V RMS |
| Measurement Category | CAT III 600 V |
Physical & Mechanical Specifications
| Parameter | Value |
|---|---|
| Maximum Conductor Diameter (Jaw Opening) | 54 mm (2.13 in.) |
| Cable Length | 1.5 m (5 ft.) |
| Output Connector Type | BNC |
Power Source & Management
| Parameter | Value |
|---|---|
| Power Requirements | Passive (none) |
Compatibility & Ordering
| Parameter | Value |
|---|---|
| Recommended Instrument Input Impedance | 1 MΩ |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -40 °C to +70 °C |
| Operating Altitude | 2000 m |
| Storage Altitude | 12000 m |
Performance
| Parameter | Value |
|---|---|
| Accuracy (100 mV/A Range) | 3% of reading + 50 mA (48 Hz to 65 Hz) |
| Accuracy (10 mV/A Range) | 2% of reading + 0.5 A (48 Hz to 65 Hz) |
| Accuracy (1 mV/A Range) | 2% of reading (100 A to 1000 A), 3% of reading (1000 A to 2000 A) (48 Hz to 65 Hz) |
| Phase Shift (100 mV/A Range) | ≤ 2° at 50/60 Hz (for currents 0.1 A to 10 A) |
| Phase Shift (10 mV/A Range) | ≤ 1° at 50/60 Hz (for currents 1 A to 100 A) |
| Phase Shift (1 mV/A Range) | ≤ 1° at 50/60 Hz (for currents 10 A to 2000 A) |
| Conductor Position Influence | ≤ 0.5% of reading (at 50/60 Hz) |
| Adjacent Conductor Influence | ≤ 15 mA/A (at 50 Hz) |
Compliance
| Parameter | Value |
|---|---|
| Pollution Degree | 2 |
Compliance & Safety
| Parameter | Value |
|---|---|
| Safety Standards | UL 61010-1, CAN/CSA-C22.2 No. 61010-1, EN 61010-2-032, IEC 61010-2-032 |
Technology
Passive electromagnetic transformer
Applications
AC current measurement for oscilloscopes and multimeters