Product Core Brief
- Model: /SP19
- Brand: LEM (commonly listed under ABB drive/inverter spare parts)
- Series: LEM LT series, LT2005 family
- Core Function: Isolated closed-loop Hall current sensor for AC, DC, and pulsed current measurement in high-power drives and converters.
- Product Type: Current transducer / current sensor (not a voltage sensor, not a power supply, not a relay)
- Key Specs: 2000 A RMS | ±400 mA secondary | ±15–24 V bipolar supply | closed-loop Hall
- Condition: New Original / New Surplus (subject to stock)
Key Technical Specifications
- Rated primary current: 2000 A RMS
- Measuring range: Up to approx. 3000 A peak, depending on variant and supply conditions
- Secondary rated output: 400 mA
- Technology: Closed-loop Hall effect
- Measurement type: AC, DC, and pulsed current
- Supply voltage: ±15 V to ±24 V bipolar
- Accuracy: Typically around ±0.3% at 25°C; confirm against the specific SP19 datasheet
- Isolation: Primary/secondary galvanic isolation
- Mounting: Panel-mounted current transducer with aperture for busbar/conductor
- SP19 suffix: Terminal/connector or mechanical option; exact pinout must be verified against the physical unit or LEM datasheet
- Typical applications: AC/DC drives, inverters, UPS, SMPS, welding power supplies, energy conversion systems
Product Introduction (No Fluff)
The LT2005-S/SP19 is a 2000A closed-loop Hall current sensor from LEM’s LT2005 family, widely used in high-power industrial drives, inverters, UPS systems, and converter equipment. It provides an isolated 400 mA secondary current signal proportional to the primary conductor current.
This part is often referenced as an ABB drive or inverter spare because it appears in ABB-associated power electronic systems. However, the component itself is manufactured by LEM. Always verify the SP19 terminal style and supply voltage before replacement.
QA & Inspection SOP
- Identity check: Confirm LEM branding, LT2005-S model marking, and SP19 suffix on the label or housing.
- Terminal verification: Check that the connector/pin layout matches the SP19 version. Different SP codes are not automatically interchangeable.
- Visual inspection: Inspect the aperture, housing, connector pins, and mounting flange for mechanical damage, burnt marks, or corrosion.
- Supply check: Verify the system provides ±15 V to ±24 V bipolar supply. Wrong supply polarity or voltage can damage the sensor.
- Output check: With no primary current, the secondary output should be near zero. Under load, the output should track primary current proportionally up to the rated range.
Installation Pitfalls & Guide
❗ Do not e with LF2005-S or -T. Different series and suffixes may have different apertures, terminals, accuracy, and supply requirements.
❗ Confirm SP19 before ordering. SP19 defines the terminal/connector option. A mismatched suffix may fit mechanically but have different pin assignments.
❗ Ensure the primary conductor is centered. Off-center busbars or poor contact can affect measurement accuracy and thermal performance.
❗ Observe polarity and supply limits. Reverse polarity or single-supply substitution can cause incorrect output or permanent damage.
Replacement steps:
- Power down the drive/converter and verify zero voltage.
- Photograph wiring, connector orientation, and busbar position.
- Remove the old sensor, checking aperture size and mounting holes.
- Install the LT2005-S/SP19 with correct orientation and secure mounting.
- Restore bipolar supply, verify zero-offset, then perform supervised current tests.
Technical FAQ
s19 an ABB product?
No. It is a LEM current sensor, but it is frequently used in ABB drives, inverters, and power conversion equipment.
2. Can I replace it with LT2005-T/SP19?
Not without confirmation. S and T variants may differ in accuracy, bandwidth, temperature range, or terminal configuration.
3. What does SP19 mean?
It is a LEM suffix for terminal/connector or mechanical option. The exact definition should be confirmed against the datasheet or physical sample.
4. What output does it provide?
A secondary current output, typically 400 mA at rated primary current. A measuring resistor is usually required to convert it to a voltage signal.
5. What should I check before commissioning?
Confirm supply voltage ±15–24 V, connector pinout, busbar size, zero-offset, polarity, and drive parameter mapping.
需要我继续为您生成同系列常见的 LTV2005、LTF2005 或 LTF2005-T/SP19 等型号的产品详情页吗？
