LRM-ST | HR-ST
Voltage indicator for capacitive measuring points
LRM-ST and HR-ST type voltage indicators are portable parts of a voltage detecting system with capacitive single-pole coupling to live parts.
The LRM/ HR function tester allows testing of the display and the overall function of the device.
According to the German accident prevention standard DGUV Regulation 3 (Table 1c), the device is subject to maintenance tests with minimum intervals of at least 6 years.
Product features
- LRM-ST: Voltage indicator for low-resistance modified systems according to IEC 62271-213 and IEC 61243-5
- HR-ST: Voltage indicator for low-resistance modified systems according to IEC 61243-5
- Voltage indication via flashing LED
- Also suitable for permanent operation on socket modules
Your added value
- Non-contact and therefore reliable measurement
- Fast and reliable voltage detection
- Clear display of the voltage status
- No direct connection to live parts necessary
- No battery supply required – Low maintenance
- Fully encapsulated electronics – High operational reliability under all environmental conditions
- Gold-plated contacts – Long service life
Technical data
| LRM-ST | HR-ST | |
|---|---|
| Response voltage Vt | LRM-ST: 4 – 5 V HR-ST: 70 – 90 V |
| Rated frequency | 50 Hz |
| Input impedance | LRM-ST: 2.0 – 2.4 MΩ HR-ST: 36.0 – 43.2 MΩ |
| Flashing frequency | ≥1 Hz with response voltage |
| Circuit | Waterproof in cast resin |
| Housing | Polycarbonate, IP 54 |
| Temperature range | -25 °C to +55 °C |
All important documents for the device
Do you need additional information about our device? In our download area you will find all relevant documents such as brochures and product catalogs, technical reports, operating instructions and dimensional drawings (login required). Simply click on the download area to obtain the documents you require.
Matching articles
PERFECT MATCH
Here you will find the matching equipment set and accessories for this item. All components are technically matched to each other and guarantee optimum functionality. For customer-specific requirements and individual offers, please contact our sales department.
Equipment set
- 1 Display unit LRM-ST | HR-ST
Other short-circuit and earth fault indicators
ComPass A 2.0
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- Detection of earth faults and short circuits for NOSPE/ KNOSPE networks
- Fault indication without directional information
ComPass B
- Highly accurate monitoring
- Detection of earth faults and short circuits for all networks
- Remote signaling via RS485 / Modbus interface
ComPass B 2.0
- Highly accurate monitoring
- Detection of earth faults and short circuits for all networks
- Directional fault indication
ComPass Bs 2.0
- Fault direction indicator with monitoring
- Detection of earth faults and short circuits for all networks
- Switching ComPass Bs 2.0 for controlling a switch-disconnector or circuit-breaker remotely