Bachmann|GM260| Grid Measurement Module
Description
The Bachmann GM260 is a high-precision grid measurement module for three-phase electrical networks, supporting two independent three-phase branches with common voltage monitoring.
Features
- Measures current, voltage, frequency, power, power factor, phase angle
- Direct input up to 480 VRMS line-to-line
- True RMS calculation including harmonics up to the 40th
- Two integrated 4-quadrant energy meters
- Compact design for dual three-phase branch measurement
- Fully integrated in Bachmann SolutionCenter
Technical Specifications
Voltage Measurement
- Quantity: 3
- Max rated voltage: 480 VRMS (L-L), 277 VRMS (L-N)
- Measuring range: 70–625 VRMS (L-L), 36–361 VRMS (L-N)
- Accuracy: ≤ ±0.1%
- Overload (continuous): 680 VRMS (L-L), 390 VRMS (L-N)
- Short-term overload: 1039 VRMS (L-L), 600 VRMS (L-N)
- Input impedance: > 2 MΩ
Current Measurement
- Quantity: 6
- CT rated current: 1 ARMS
- Measuring range: 0.01–1.2 ARMS
- Accuracy: ≤ ±0.3%
- Continuous overload: 1.2 ARMS
- Short-term overload: 20 ARMS (1s, 5x, 300s interval)
- Burden: 75 mVA
Frequency Measurement
- Rated: 50/60 Hz
- Range: 45–65 Hz
- Accuracy: ≤ ±0.010 Hz (≤ ±0.005 Hz with filtering)
- Update interval: 20 ms (50Hz), 16.67 ms (60Hz)
Power Measurement
- Types: Active (P), Reactive (Q), Apparent (S), per phase and total
- Accuracy: ≤ ±0.4%
- Calculation standard: DIN 40110-2
- Update interval: 20 ms (50Hz), 16.67 ms (60Hz)
Energy Metering
- Counters: 2 (independent 4Q)
- Accuracy: ≤ ±0.4%
- Resolution: 1 Wh
- Memory: Nonvolatile, update cycle: 1s
Bachmann|GM260| Grid Measurement Module



Bachmann|GM260| Grid Measurement Module
Description
The Bachmann GM260 is a high-precision grid measurement module for three-phase electrical networks, supporting two independent three-phase branches with common voltage monitoring.
Features
- Measures current, voltage, frequency, power, power factor, phase angle
- Direct input up to 480 VRMS line-to-line
- True RMS calculation including harmonics up to the 40th
- Two integrated 4-quadrant energy meters
- Compact design for dual three-phase branch measurement
- Fully integrated in Bachmann SolutionCenter
Technical Specifications
Voltage Measurement
- Quantity: 3
- Max rated voltage: 480 VRMS (L-L), 277 VRMS (L-N)
- Measuring range: 70–625 VRMS (L-L), 36–361 VRMS (L-N)
- Accuracy: ≤ ±0.1%
- Overload (continuous): 680 VRMS (L-L), 390 VRMS (L-N)
- Short-term overload: 1039 VRMS (L-L), 600 VRMS (L-N)
- Input impedance: > 2 MΩ
Current Measurement
- Quantity: 6
- CT rated current: 1 ARMS
- Measuring range: 0.01–1.2 ARMS
- Accuracy: ≤ ±0.3%
- Continuous overload: 1.2 ARMS
- Short-term overload: 20 ARMS (1s, 5x, 300s interval)
- Burden: 75 mVA
Frequency Measurement
- Rated: 50/60 Hz
- Range: 45–65 Hz
- Accuracy: ≤ ±0.010 Hz (≤ ±0.005 Hz with filtering)
- Update interval: 20 ms (50Hz), 16.67 ms (60Hz)
Power Measurement
- Types: Active (P), Reactive (Q), Apparent (S), per phase and total
- Accuracy: ≤ ±0.4%
- Calculation standard: DIN 40110-2
- Update interval: 20 ms (50Hz), 16.67 ms (60Hz)
Energy Metering
- Counters: 2 (independent 4Q)
- Accuracy: ≤ ±0.4%
- Resolution: 1 Wh
- Memory: Nonvolatile, update cycle: 1s