Battery Energy Storage Systems (BESS) are used to store power (often from a renewable source) for later use during a critical time. The benefits of these systems include cost savings, clean energy, and reducing downtime. It is vital that the electrical integrity of the systems are properly monitored to maintain the benefits.
BESS most commonly operate as ungrounded systems, which mean all line conductors are intentionally isolated from ground. Although these systems can continue to operate with a single ground fault, it is vital to indicate and clear the first fault as quickly as possible. If the fault is not cleared, a second fault develops and a line-to-line short will occur. Bender’s insulation monitoring devices (IMDs) will give advanced notice of a first fault condition which allows for time to properly identify and clear the fault before a catastrophic issue arises. Bender offers a wide range of IMDs for virtually all size BESS, from small-scale deployments to large-scale, utility grade systems.
Most BESS operate via an ungrounded system design, however there are grounded installations that must have proper ground fault protection to operate safely. These systems can be grounded on the + or – battery line, or at the neutral connection point on the inverter. It is critical to monitor for ground faults at low leakage current levels to detect and clear issues before they trip a protection device and/or damage the batteries. Bender’s residual current monitors are able to detect low level AC and DC grounds faults to indicate minor issues before they become major issues, such as equipment fires or system shut downs.
Minimize System Downtime
Electrical issues can be detected and located while keeping the installation fully energized.
Automatically Locate Faults
Automatic fault location provides remote diagnostic tools which eliminates the need to have technicians on site during the fault.
Increase Safety
Ground-fault location at packs and modules minimizes battery fire risk (with quick repair).
Reduce Maintenance Costs
Significant decrease in maintenance costs due to the accuracy of detection and decreased need for human interaction with the system.
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| Product Overview ISOMETER®/ISOSCAN® | Product Overviews | 5.3 MB | EN | 2024/02/1616.02.2024 | |
| Product Overview - Residual Current Monitoring | Product Overviews | 6.2 MB | EN | 2023/11/0909.11.2023 | |
| Insulation Fault Location - Planning and Setup | Technical article | 112.4 KB | EN | 2019/05/1313.05.2019 | |
| Electrical Safety in Control and Auxiliary Circuits | Technical article | 632.6 KB | EN | 2019/05/1313.05.2019 | |
| Electrical Safety and High Availability in Welding Systems | Technical article | 447.5 KB | EN | 2019/05/1313.05.2019 | |
| Battery Energy Storage Systems Flyer | Flyer | 2.5 MB | EN | 2021/04/2121.04.2021 |
Products
Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V
Insulation monitoring device for inverter applications and large industrial plants
Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V
Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Insulation fault locator for localisation of insulation faults in main circuits
Condition Monitor with an integrated gateway for the connection of Bender devices to Ethernet-TCP/IP networks
Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V
Insulation monitoring device for inverter applications and large industrial plants
Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V
Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor
Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel
Insulation fault locator for localisation of insulation faults in main circuits
Condition Monitor with an integrated gateway for the connection of Bender devices to Ethernet-TCP/IP networks
