Battery Energy Storage System

Battery Energy Storage Systems (BESS)

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.

Ungrounded BESS

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.

Grounded BESS

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.

Downloads

CategoryNameSizeLanguageTimestampD-/B-Number
Product Overviews ISOMETER®/ISOSCAN® 3.7 MB EN2022/05/25 08:08:1025.05.2022 08:08:10
Product Overviews Residual Current Monitoring 2.2 MB EN2022/05/24 12:26:4924.05.2022 12:26:49
Technical article Electrical Safety and High Availability in Welding Systems 447.5 KB EN2019/05/13 10:29:2213.05.2019 10:29:22

Products

Insulation monitoring

ISOMETER® isoPV425 mit AGH420
ISOMETER® isoPV425 with AGH420

Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V

ISOMETER® iso685…
ISOMETER® iso685…

Insulation monitoring device for inverter applications and large industrial plants

ISOMETER® isoPV1685/isoPV1685PFR
ISOMETER® isoPV1685RTU/isoPV1685P

Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V

ISOMETER® iso1685DP-425/isoHV1685D-425/isoLR1685DP-325
ISOMETER® iso1685DP/isoHV1685D/isoLR1685DP

Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)

Residual current monitoring

LINETRAXX® RCMS460-D
LINETRAXX® RCMS460-D

Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor

LINETRAXX® RCMS490-D
LINETRAXX® RCMS490-D

Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel

Insulation fault location

ISOSCAN® EDS440
ISOSCAN® EDS440

Insulation fault locator for localisation of insulation faults in main circuits

Communication

COMTRAXX® COM465IP

Condition Monitor with an integrated gateway for the connection of Bender devices to Ethernet-TCP/IP networks

Current transformers

Measuring current transformers

  • Window-type current transformers
  • Cable-type current transformers

Insulation monitoring

ISOMETER® isoPV425 mit AGH420
ISOMETER® isoPV425 with AGH420

Insulation monitoring device for photovoltaic systems up to AC 690 V/DC 1000 V

Details
ISOMETER® iso685…
ISOMETER® iso685…

Insulation monitoring device for inverter applications and large industrial plants

Details
ISOMETER® isoPV1685/isoPV1685PFR
ISOMETER® isoPV1685RTU/isoPV1685P

Insulation monitoring device for unearthed systems in photovoltaic installations up to AC 1000 V/DC 1500 V

Details
ISOMETER® iso1685DP-425/isoHV1685D-425/isoLR1685DP-325
ISOMETER® iso1685DP/isoHV1685D/isoLR1685DP

Insulation monitoring device for unearthed AC, AC/DC and DC power supplies (IT systems)

Details

Residual current monitoring

LINETRAXX® RCMS460-D
LINETRAXX® RCMS460-D

Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor

Details
LINETRAXX® RCMS490-D
LINETRAXX® RCMS490-D

Multichannel AC, pulsed DC and AC/DC sensitive residual current monitor with one alarm contact per channel

Details

Insulation fault location

ISOSCAN® EDS440
ISOSCAN® EDS440

Insulation fault locator for localisation of insulation faults in main circuits

Details

Communication

COMTRAXX® COM465IP

Condition Monitor with an integrated gateway for the connection of Bender devices to Ethernet-TCP/IP networks

Details

Current transformers

Measuring current transformers

  • Window-type current transformers
  • Cable-type current transformers

Details
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