DOLD SK 9173 – Undervoltage Relay, Single-Phase
Undervoltage Relay, Single-Phase
- Preventive maintenance
- For better productivity
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Monitoring devices
273 products
DOLD SK 9179 – Phase Sequence Monitor (Phase Sequence Relay)
Phase Sequence Monitor (Phase Sequence Relay)
- According to IEC/EN 60255-1
- Detection of phase sequence in 3-phase systems
- Without auxiliary voltage
DOLD SK 9270 – Overcurrent Relay
Overcurrent Relay
DOLD SK 9271 – Undercurrent Relay
Undercurrent Relay
DOLD SK 9272 – Overcurrent Relay
Overcurrent Relay
- Adjustable switching delay
- Closed circuit operation (output relay not activated in case of error)
- Optionally open circuit operation (output relay activated in case of error)
- Optionally manual reset, reset button on the front
DOLD SK 9273 – Undercurrent Relay
Undercurrent Relay
DOLD SL 5201/20007CT – Overcurrent Relay
Overcurrent Relay
DOLD SL 5880 – Insulation monitor
Insulation monitor
- Preventive fire and system protection
- For single and 3-phase AC-systems up to 0 … 500 V and 10 … 10000 Hz
- Monitors also disconnected voltage systems
- Easy adjustment of response values
DOLD SL 5881 – Insulation monitor
Insulation monitor
- Preventive fire and system protection
- For DC voltage systems up to 12 … 280 V
- Wide voltage range of measuring input UN DC 12 … 280 V (on request DC 24 … 500 V with separate auxiliary supply, Measuring range 20 … 500 kΩ)
- Easy adjustment of response value
- Selective ground fault indication for L+ and L- allows fast fault finding
DOLD SL 5882 – Residual current monitor, Type A
Residual current monitor, Type A
- Preventive fire and system protection
- Increasing the availability of plants by early fault detection
- With external residual current transformer
- Protection against manipulation by sealable transparent cover over setting switches
DOLD SL 5990 – Fault Annunciator System
Fault Annunciator System
DOLD SL 5991 – Fault Annunciator System
Fault Annunciator System
DOLD SL 9059 – Phase-sequence relay
Phase-sequence relay
- Protects mobile equipment against damage or destruction coming from wrong phase sequence
DOLD SL 9065CT – Underload monitor (Cos-phi monitor)
Underload monitor (Cos-phi monitor)
DOLD SL 9069 – Neutral Monitor
Neutral Monitor
- Protects systems from damage caused by excessively high or low voltages with unbalanced loads
- Preventive maintenance
- For better productivity
DOLD SL 9070 – Overvoltage Relay
Overvoltage Relay
DOLD SL 9071 – Undervoltage Relay
Undervoltage Relay
- Preventive maintenance
- For better productivity
DOLD SL 9075 – Fuse Monitor
Fuse Monitor
- Increased system availability through early detection of fuse failures, which can cause considerable damage to systems
- Rapid detection of fuse failures, even when consumers are switched off, ensures system availability at the earliest possible point in time
- Reliable detection of fuse failure, even with an unbalanced or harmonic network and with regenerative motors
DOLD SL 9077 – Over- and undervoltage relay
Over- and undervoltage relay
- Preventive maintenance
- For better productivity
DOLD SL 9077/800 – Over- and undervoltage relay
Over- and undervoltage relay
- Preventive maintenance
- For better productivity
DOLD SL 9079 – Short-time Voltage Drop Relay
Short-time Voltage Drop Relay
- Preventive maintenance
- For better productivity
DOLD SL 9086 – Phase monitor with thermistor motor protection
Phase monitor with thermistor motor protection
DOLD SL 9087 – Phase monitor
Phase monitor
DOLD SL 9094 – Temperature Monitoring Relay
Temperature Monitoring Relay
- Preventive maintenance
- For better productivity
- Quicker fault locating