The Utility Relay Company B-290 is a secondary injection test set that is specifically designed for testing the ZERO-Hertz DC trip unit. The B-290 can be used to quickly and easily test the pick-up and multiple points on the time-current curves of the ZERO-Hertz DC trip unit. The test set can perform pick-up and time delay trip tests for either the transducer inputs or the shunt inputs depending on the model ZERO-Hertz DC trip unit.
Here are some of the key features of the B-290:
Features:
Specifications:
Resources:
Features:
- Designed for testing the ZERO-Hertz DC trip unit
- Can test pick-up and multiple points on the time-current curves
- Can test transducer inputs or shunt inputs
- Built-in LCD display
- Self-calibration function
- Built-in reference voltage
Specifications:
- Case Information: 8 x 8 x 16 inches
- Weight: 8 lbs (3.6 kg)
- Power Requirement: 120 VAC, 1 AMP
- Time Display: .001 second resolution LCD Time Display with Reset
- Transducer Input with current direction switch
- Shunt Input with current direction switch
Resources:
