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User Guide for NHP models including: Static Var Generator, Var Generator, Generator
14 nov 2024 — This guide also includes breaker, cable and CT selection guides which is a critical part to the installation and operation of the system. Page 3. 3. Step 1.
14 nov 2024 — The example below calculates required total compensation (kVAr) from the power factor (PF) value found on your electricity bill or meter data. Sizing tip: If ...
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DocumentDocumentNHP Electrical Engineering Products Selection Guide Static Var Generator (SVG) System selection guide and critical installation information Smart Distribution nhp.com.au | nhpnz.co.nz 1300 647 647 | 0800 647 647 nhpsales@nhp.com.au | sales@nhp-nz.com Selection Guide Static Var Generator (SVG) The Delta SVG System provides fast step-less compensation to correct leading and lagging power factor at a site. A poor power factor results in a phase angle difference between the current and voltage waveforms in an AC system. Improving power quality can reduce your energy costs, increase efficiency, and improve service life of infrastructure. There are five steps in selecting the right SVG system for you. This guide also includes breaker, cable and CT selection guides which is a critical part to the installation and operation of the system. 2 Step 1 How much compensation is needed (kVAr)? For an existing site: To determine the amount of kVAr needed you will ideally have available the following information: Existing power factor Total load kVA New target power factor This information may already be available via your electricity bill or can be requested from your energy retailer as part of your meter data. An NHP power quality audit can also be used to capture the exact power factor for the site as well as for individual loads. This audit would also help capture any other power quality issues that may not be initially visible such as harmonic distortion or load imbalance. The example below calculates required total compensation (kVAr) from the power factor (PF) value found on your electricity bill or meter data. Sizing tip: If the required system is to correct a current PF of 0.75 to a new PF of 0.98, then the information required is as follows: Existing power factor = 0.75 Total load kVA = 1333kVA New target power factor = 0.98 If the load power is 1000kW at a PF of 0.75, the displaced (reactive) power is 882 kVAr. With the new target PF of 0.98, at the load of 1000 kW, the displaced (reactive) power is reduced to 203 kVAr. The compensation SVG system size required to achieve this is: 882kVAr 203kVAr = 679kVAr. The total compensation in this case would need to be rounded up to the nearest 100th as the SVG system offered by NHP has modular increments of 100kVAr. Therefore, the total compensation: 700kVAr. Important note: Even though high kVAr can be a burden on the supply and electricity costs, inductive loads such as motors and welding equipment need some kVAr to maintain the electromagnetic fields required to operate. For sites that are at the design/construction stage: The kVAr required can be calculated using tools such as PowerCad or vendor tools. NHP's technical team can also assist with sizing up an appropriate system in accordance to the project details Step 2 How much spare capacity do you need in the cabinet? The power factor at a site can change with the type and number of loads that are running. If you plan to expand your site, add equipment or replace exciting products, accounting for spare capacity would be beneficial as a future proof option. The cabinet sizes are listed in the ordering guide, the incremental steps are by 100kVAr. The wall mount systems can be expanded by connecting two systems in parallel. Step 3 3 wire or 4 wire? The four-wire option is required when there is an imbalance in the network. Network imbalance is when differing line voltages across phases occurs, caused by unbalanced loads, single phase and phase-to-phase connections. This information can be found on your meter or power quality audit report. Use 3 wire For balanced networks 4 wire For an unbalanced network with a fully rated neutral wire Applicable industry examples Mining Industrial Food and beverage Manufacturing Commercial Office Education Shopping centers Step 4 IP rating requirement? The environment that the cabinet would be installed in has a major impact on the IP rating. NHP offers options for IP30 or IP54 floor standing cabinets and wall mount units. It is not recommended for any of the IP rated cabinets to be installed outdoors in direct sunlight or without cover from rain. Step 5 Colour of cabinet RAL7035 Light Grey or X15 Orange 3 Ordering guide Wall Mount System For a wall mount Static Var Generator (SVG) solution, the power module is included in the enclosure. Module Output (A) 50 IP Rating IP30 3 wire or 4 wire 4 wire 100 IP30, IP54 4 wire Catalogue No. PQSVGW5030G4XXT1A PQSVGWM10030G4XXT1A PQSVGWM10054G4XXT1A Floor Standing System Module Output (kVAr) 100 100 3 wire or 4 wire 3 Wire 4 Wire Cabinet Max Capacity (A) 200 500 700 300 200 500 700 300 Max. Number of Modules 2 5 7 3 2 5 7 3 IP rating IP30 IP30 IP30 IP54 IP30 IP30 IP30 IP54 Catalogue No. PQSVGM100XG3FFCX1A PQSVGM100XG4FFCX1A Colour Grey Grey Grey Grey Orange Orange Orange Orange Catalogue No. PQSVGC20030GXFFCX1A PQSVGC50030GXFFCX1A PQSVGC70030GXFFCX1A PQSVGC30054GXFFCX1A PQSVGC20030OXFFCX1A PQSVGC50030OXFFCX1A PQSVGC70030OXFFCX1A PQSVGC30054OXFFCX1A Ordering examples Example 1: To get a 200kVAr 3 wire SVG system with 100kVAr spare capacity and an IP54, orange cabinet. Order: 2 x PQSVGM100XG3FFCX1A and 4 1 x PQSVGC30054OXFFCX1A Example 2: To get a 400kVAr 4 wire SVG system with 300kVAr spare capacity and an IP30, grey cabinet. Order: 4 x PQSVGM100XG4FFCX1A 1 x PQSVGC70030GXFFCX1A Example 3: To get a 50kVAr 4 wire SVG wall mount system. Order: 1 x PQSVGW5030G4XXT1A Cable and breaker Selection Guide Appropriate cable and breaker selection are a vital part of ensuring the system will operate at its optimal capacity. Table 1 shows the required breaker rating and a guide to cable sizes for the respective SVG system. Note: The cable sizes are a guide only, always refer to AS/NZS3008 for specific requirements. Individual de-rating based on method of installation, cable lengths, volt drop, ambient temperature and cable configuration must be allowed for when sizing cable. Table 1 Cable and breaker selection guide for SVG Systems 50kVAr SVG PM Quantity 1 SVG Capacity (kVAr) 50 SVG Rated Current (A) @400V 75 MCCB Rated Current (A) 100 Min. Conductor Size R/S/T/N Phases 30mm2 Min. Conductor Size PE 16mm2 100kVAr SVG PM Quantity SVG Capacity (kVAr) SVG Rated Current (A) @400V MCCB Rated Current (A) Min. Conductor Size R/S/T/N Phases Min. Conductor Size PE 1 100 150 180 70mm2 25mm2 2 200 300 350 150mm2 50mm2 3 300 450 550 2x120mm2 95mm2 4 400 600 800 2x185mm2 150mm2 5 500 750 900 2x240mm2 185mm2 6 600 900 1100 2x300mm2 240mm2 7 700 1050 1250 2x300mm2 240mm2 Note: For 3P3W SVG, there are cooling fans in the cabinet rated for AC220V, so a 1.5mm2 cable should be connected to 3P3W SVG cabinet's neutral terminal powering AC220V fans in the cabinet. For 3P4W SVG, neutral cable diameter should follow the guideline in the above table. CT Selection Guide The correct CTs must be selected according to the electric condition of the installing site. Requirements of CT selection for SVG are shown in Table 2. Table 2 Requirements for SVG CT Selection Specification Requirement CT Ratio CT Primary Current: 5A CT Primary Current 1.5* Maximum Load Current CT Accuracy Class 0.5 or 1.0 1~2 modules 10VA CT Secondary Capacity (VA) 3~4 modules 15VA 5~7 modules 20VA >7 modules, consult Delta or Delta distributor Note: Recommended secondary current of CT is 5A. When actual CT secondary current is 1A, CT ratio setting should be changed accordingly, e.g., if actual CT ratio is 500:1A, the CT ratio setting in SVG Touch Screen HMI should be 2500:5A 5 Critical Installation Information The placement of the CTs during the installation is critical to the operation of the system. This section outlines the placement options for different applications. The following guides are for the most common installations. For applications where more than one SVG unit is required, solar panels are present or any other variations to the scenarios outlined above, please refer to the full CT selection and installation guide. 6 External CT Connection Guide Single SVG System 1) Closed loop, Unbalanced phases (4-wire system) In this single SVG system scenario, 3 CTs shall be installed at grid side (R/S/T phases). P1 should be facing the grid side, refer to Figures 1-1 and 1-2 for single line diagram (SLD) and detailed connection. If CT connection is following this pattern, CT related parameters should be set according to the following two tables for touch screen HMI. Figure 1-1 CT Connection for closed loop, unbalanced phases SLD scenario Transformer SVG CT P1 // // // P2 Figure 1-2 CT Connection for closed loop, unbalanced phase - Detailed Loads Loads GRI D R S T N P1 of CT facing the grid S1 S2 S1 S2 S1 S2 Loads SVG LO AD CT settings in Touch Screen HMI Setting Location CT Setting CT Position CT Setting CT Direction CT Setting CT Number CT Setting 1-CT Location CT Setting CT Ratio R-CT-S1 R-CT-S1 R-CT-S1 R-CT-S2 R-CT-S2 R-CT-S2 S-CT-S1 S-CT-S1 S-CT-S1 S-CT-S2 S-CT-S2 S-CT-S2 T-CT-S1 T-CT-S1 T-CT-S1 T-CT-S2 T-CT-S2 T-CT-S2 SV G Cabinet From left to right: XT_PIN1 to XT_PIN1 8 CT Terminal B) Detailed CT Connectio n Setting Value Grid Side Positive 3-CT No need to set Actual CT ratio CT T_S2 T_S1 S_S2 S_S1 R_S2 R_S1 SVG Wall Mount CT Terminal 7 2) Closed loop, Balanced phases (3-wire or 4-wire systems) In this single SVG system scenario, customer can use 3 CTs and follow the same CT connection configuration shown in Figures 1-1 and 1-2. Alternatively, only 1 CT can be installed at grid side (R phase), P1 should be facing the grid side. Refer to Figure 2-1 and 2-2 for single line diagram (SLD) and detailed connection. If CT connection is following this pattern, CT related parameters should be set according to the following two tables for touch screen HMI. Figure 2-1 CT Connection for closed loop, balanced phases-SLD Transformer SVG CT P1 // // P2 Loads Loads Loads SVG Figure 2-2 CT Connection for closed loop, balanced phase - Detailed GRI D R S T N P1 of CT facing the grid S1 S2 LO AD R-CT-S1 R-CT-S1 R-CT-S1 R-CT-S2 R-CT-S2 R-CT-S2 S-CT-S1 S-CT-S1 S-CT-S1 S-CT-S2 S-CT-S2 S-CT-S2 T-CT-S1 T-CT-S1 T-CT-S1 T-CT-S2 T-CT-S2 T-CT-S2 SV G Cabinet From left to right: XT_PIN1 to XT_PIN1 8 CT Terminal B) Detailed CT Connectio n CT T_S2 T_S1 S_S2 S_S1 R_S2 R_S1 SVG Wall Mount CT Terminal CT settings in Touch Screen HMI Setting Location CT Setting CT Position CT Setting CT Direction CT Setting CT Number CT Setting 1-CT Location CT Setting CT Ratio Setting Value Grid Side Positive 1-CT Phase-A Actual CT ratio 3) Open loop, Unbalanced phases (4-wire) In this single SVG system scenario, 3 CTs shall be installed at load side (R/S/T phases), P1 should be facing the grid side. Refer to Figures 3-1 and 3-2 for single line diagram (SLD) and detailed connection. If CT connection is following this pattern, CT related parameters should be set according to the following two tables for touch screen HMI. Figure 3-1 CT Connection for open loop, unbalanced phases - SLD CT // // // P1 P2 SVG Loads Loads Figure 3-2 CT Connection for open loop, unbalanced phases - Detailed GRI D R S T N P1 of CT facing the grid S1 S2 S1 S2 S1 S2 LO AD R-CT-S1 R-CT-S1 R-CT-S1 R-CT-S2 R-CT-S2 R-CT-S2 S-CT-S1 S-CT-S1 S-CT-S1 S-CT-S2 S-CT-S2 S-CT-S2 T-CT-S1 T-CT-S1 T-CT-S1 T-CT-S2 T-CT-S2 T-CT-S2 CT T_S2 T_S1 S_S2 S_S1 R_S2 R_S1 SVG Wall Mount CT Terminal SV G Cabinet CT Terminal From left to right: XT_PIN1 to XT_PIN18 B) Detailed CT Connectio n CT settings in Touch Screen HMI Setting Location CT Setting CT Position CT Setting CT Direction CT Setting CT Number CT Setting 1-CT Location CT Setting CT Ratio Setting Value Load Side Positive 3-CT No need to set Actual CT ratio 9 4) Open loop, Balanced phases (3 wire or 4 wire) In this single SVG system scenario, customer can use 3 CTs and follow the same CT connection configuration shown in Figures 3-1 and 3-2. Or only 1 piece of CT can be installed at grid side (R phase), P1 of which should be facing the grid side, refer to Figure 4-1 and 4-2 for single line diagram (SLD) and detailed connection. If CT connection is following this pattern, CT related parameters should be set according to the following two tables for touch screen HMI. Figure 4-1 CT Connection for open loop, balanced phases - SLD CT // // P1 P2 Figure 4-2 CT Connection for open loop, balanced phases-Detailed GRI D R S T N SVG Loads Loads P1 of CT facing the grid S1 S2 LO AD R-CT-S1 R-CT-S1 R-CT-S1 R-CT-S2 R-CT-S2 R-CT-S2 S-CT-S1 S-CT-S1 S-CT-S1 S-CT-S2 S-CT-S2 S-CT-S2 T-CT-S1 T-CT-S1 T-CT-S1 T-CT-S2 T-CT-S2 T-CT-S2 CT T_S2 T_S1 S_S2 S_S1 R_S2 R_S1 SVG Wall Mount CT Terminal SV G Cabinet CT Terminal From left to right: XT_PIN1 to XT_PIN18 B) Detailed CT Connectio n CT settings in Touch Screen HMI Setting Location CT Setting CT Position CT Setting CT Direction CT Setting CT Number CT Setting 1-CT Location CT Setting CT Ratio Setting Value Load Side Positive 1-CT Phase-A Actual CT ratio 10 Services and training solutions to improve your business To support our range of quality products, NHP also offer a wide range of service and training options, including technical support, field service, maintenance contracts, repair services and training all of which are delivered by qualified technicians. This access to NHP's expertise, combined with our extensive local stockholding further enables customers to experience a holistic approach across their automation, industrial switchgear, training and commissioning business requirements, for complete peace of mind. At NHP, we understand the complexities of your project and our product and service offering is designed to help you overcome them. If your project is focused on a profitable, safe and sustainable operation, NHP's customised value add service and training offering is the place to start. nhp.com.au 1300 NHP NHP | 0800 NHP NHP sales@nhp.com.au | sales@nhp-nz.com 11 nhp.com.au SALES 1300 647 647 nhpsales@nhp.com.au nhpnz.co.nz SALES 0800 647 647 sales@nhp-nz.com NHP Electrical Engineering Products A.B.N. 84 004 304 812 © COPYRIGHT NHP 2024 NHP49BCH 11/24