drafts:dc_distribution
Differences
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drafts:dc_distribution [2018-07-30 08:56] – [Lynx DC distribution system] mleeftink | drafts:dc_distribution [2019-10-17 14:11] – [Lynx shunt] guy_stewart | ||
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It consists of the following modules: | It consists of the following modules: | ||
- | * Lynx Power In | + | * [[https:// |
- | * Lynx Shunt | + | * [[https:// |
- | * Lynx Distributor | + | * [[https:// |
+ | |||
+ | You can use the Lynx Distributor or Lynx Power In without the Lynx Shunt. | ||
Information on these 3 parts can be found below, but also in this [[https:// | Information on these 3 parts can be found below, but also in this [[https:// | ||
---- | ---- | ||
+ | {{: | ||
===== Lynx Power in ===== | ===== Lynx Power in ===== | ||
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{{: | {{: | ||
- | The lynx power in module is used to connect batteries. It contains a negative and positive DC bus-bar with M8 bolts to connect batteries cables | + | The lynx power in module is used to connect batteries. It contains a negative and positive DC bus-bar with M8 bolts in which to connect batteries cables. |
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The Lynx shunt contains a positive bus-bar with space to mount a fuse and a negative bus-bar with a shunt. | The Lynx shunt contains a positive bus-bar with space to mount a fuse and a negative bus-bar with a shunt. | ||
- | It also contains battery | + | It also contains battery |
- | + | ||
- | The Lynx shunt is available in two models: | + | |
- | * VE.CAN | + | |
- | * VE.NET (depreciated) | + | |
+ | The Lynx shunt is available with a VE.Can connection. A previous model had a VE.Net connection and is now discontinued. | ||
==== Fuse ==== | ==== Fuse ==== | ||
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+ | ==== Why Fuse the Bus? ==== | ||
+ | Batteries are special. | ||
+ | They are both a source and destination of energy. | ||
+ | Power can flow from them to a load (or a fault). | ||
+ | It can also flow to them from a charge source (eg other batteries or solar). | ||
+ | |||
+ | It is important that in cases where batteries are combined, and there is the opportunity for current to flow from one connection to another in fault, that there is sufficient and robust circuit protection. | ||
+ | |||
+ | For example, the BYD Lithium IP55 cabinets. | ||
+ | |||
+ | In this case the 4 module battery cabinets are each protected by individual 85A circuit breakers and also collectively protected by a 125A circuit breaker at the cabinet end. | ||
+ | |||
+ | These cabinets are then connected through the Lynx Distributor, | ||
+ | |||
+ | Both the 125A circuit breaker and the 125A fuse are as close as possible to their respective sources of current. The battery cells, where the internal wire is protected inside the cabinet. And the shared bus bar (where current can flow from other batteries or a charge source). | ||
+ | |||
+ | This means that if there is a short circuit fault somewhere along the battery cabinet take off cable, there is sufficient protection. | ||
+ | |||
+ | Without the 125A bus bar MEGA fuse. There is the possibility of the battery take off cables fault that the 125A cabinet circuit breaker trips, but that the fault is continued by the supply of the other batteries (up to their combined 375A) and this exceeds the current rating of the cable to the fault and starts a fire. | ||
+ | |||
+ | This is an unlikely scenario, but consequences of a fire in an energy storage situation are so serious that it is a recommended level of protection. | ||
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Contains positive and negative bus-bar and provides a connection for for 4 individual DC equipment or load or DC groups. It has a space for a individual DC fuses per DC group and a led for each fuse to indicate if fuse is blown. | Contains positive and negative bus-bar and provides a connection for for 4 individual DC equipment or load or DC groups. It has a space for a individual DC fuses per DC group and a led for each fuse to indicate if fuse is blown. | ||
- | * Green led = fuse is okay | + | * Green led = all 4 fuses are okay |
* Red led = blown fuse | * Red led = blown fuse | ||
==== Fuses ==== | ==== Fuses ==== | ||
- | Uses MEGA fuses (please | + | Uses MEGA fuses. Please |
==== Installation ==== | ==== Installation ==== | ||
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+ | ==== Customer Images ==== | ||
+ | |||
+ | Here are some images from customer' | ||
+ | **[[https:// | ||
+ | https:// | ||
+ | https:// | ||
+ | **[[http:// | ||
+ | https:// | ||
+ | **[[https:// | ||
+ | ** | ||
+ | [[https:// |
drafts/dc_distribution.txt · Last modified: 2019-10-18 13:14 by guy_stewart