The SIM-Q device is designed to monitor the insulation resistance of AC networks with isolated neutral and DC networks. Insulation resistance monitoring is carried out by applying a DC voltage to the monitored network and measuring the leakage current between the network and earth. The use of SIM-Q is possible in alternating current networks with a frequency of 5 to 200 Hz, to which loads of various types are connected. The scale in the device is replaceable.

Specifications:

• DC resistance (Ri): 300 kΩ ± 1%
• AC impedance (Zi): 251 kΩ ± 1% at 50 Hz
• Measuring output voltage: standard: +/- 25.5 V Max: +/- 27.3 V
• Current Measurement (Im) Max: 100 μA
• Input voltage (UN): 0 to 690 VAC + 20% continuous (828 VAC) 0 to 1000 V DC
• DC input voltage (Ufg): Max. up to 1000V DC continuously

Insulation resistance meter AAL-2 is designed to monitor the insulation resistance of alternating current networks with isolated neutral. The device applies a voltage of 12 V DC to the monitored network and measures the leakage current, which depends on the value of the insulation resistance. The scales are replaceable, with a red sector in the area of ​​low resistance.

Specifications:

• DC resistance (Ri): 22 kΩ or 220 kΩ ± 5% (for ranges 1 M / 10 M respectively)
• AC impedance (Zi):> 100 kΩ at 50 Hz
• Measuring output voltage: 12V DC ± 10%
• AC voltage of the monitored network (max.): 528 V AC continuous (440 V AC +20%)

Insulation resistance meter ADL is designed to monitor the insulation resistance of DC networks Insulation is monitored between the negative wire and the earth wire. The ADL injects DC voltage with alternating polarity across a known resistance and measures the current.