This checklist will be an aid to maintain quality design of Single Line Diagram.
| No. | Done | Check Item |
|---|---|---|
| 1 | | Verify Client Name |
| 2 | | Verify Project Title |
| 3 | | Verify Drawing Title |
| 4 | | Verify Drawing No. & Revision No. |
| 5 | | Verify Project No. |
| 6 | | Verify Reference Drawing numbers and Titles. |
| 7 | | Verify notes and legends with Project template? |
| 8 | | Verify symbols based on Client’s requirements, i.e. IEC, ANSI, etc. |
| 9 | | Verify size of symbol and character appropriate to the size and scale of the drawing? |
| 10 | | Verify type and width of lines suitable to the size and scale of the drawing? |
| 11 | | Configurations for Power distribution system into the Drawing, such as Simple Radial, Loop, Ring Main, etc. |
| 12 | | Verify grounding system, such as, Ungrounded, Floating, High-Resistance, Low-Resistance and Solidly grounded. |
| 13 | | Are the transformer phase displacement and winding connection (Delta or Wyes) suitable for the grounding system? |
| 14 | | Verify if Tie-in point/condition with Utility Company are clearly shown. |
| 15 | | Verify if future circuit breakers are provided as per Client’s requirements. |
| 16 | | Are protective relays and meters (inc. remote metering) properly allocated on the drawing as per the requirements stipulated on Client’s document/drawings? |
| 17 | | Show the secondary circuits of CT and PT connected to relays and/or meters by thin solid line. |
| 18 | | Indicate interlocking/intertripping signals by dash lines with arrow marks. |
| 19 | | Verify Name of Utility Company |
| 20 | | Verify Utility Company Phase/Wire |
| 21 | | Verify Utility Company Voltage (kV) and Frequency (Hz) |
| 22 | | Verify Utility Company Short Circuit Capacity (MVA) and X/R ratio |
| 23 | | Verify Power Generator Equipment No. |
| 24 | | Verify Power Generator Type of Driver (ex. STG, GTG, DEG, EDG) |
| 25 | | Verify Power Generator Phase/Wire |
| 26 | | Verify Power Generator Voltage (kV) and Frequency (Hz) |
| 27 | | Verify Power Generator Capacity (kW) and Power Factor |
| 28 | | Verify Power Generator Number of Pole (i.e. 2P, 4P, etc.) |
| 29 | | Verify Power Generator Provision of Self Balance CT |
| 30 | | Verify Large Motor Equipment No. , Service Name |
| 31 | | Verify Large Motor Type of Motor (ex. SM, IM, etc.) |
| 32 | | Verify Large Motor Output (kW) |
| 33 | | Verify Large Motor Provision of Lightning Arrestor |
| 34 | | Verify Large Motor Provision of Self Balance CT |
| 35 | | Verify Transformer Equipment No. |
| 36 | | Verify Transformer Capacity (kVA or MVA) for each cooling condition (OA/FA, etc.) |
| 37 | | Verify Transformer Voltage Ratio and Required Taps |
| 38 | | Verify Transformer Winding Connection (Delta or Wye) |
| 39 | | Verify Transformer % Impedance (%) |
| 40 | | Verify Cable Rated Voltage |
| 41 | | Verify Cable Number of Core |
| 42 | | Verify Cable Cross Sectional Area |
| 43 | | Verify Cable Insulation Materia |
| 44 | | Verify Cable Type of Protection Armor, if any |
| 45 | | Verify Bus Duct Rated Voltage (kA) |
| 46 | | Verify Bus Duct Rated Continuous Current (A) |
| 47 | | Verify Switchgear Bus-Bar identification (A or B) |
| 48 | | Verify Switchgear Bus-Bar Phase and Wire (i.e. 3Phase, 4Wire) |
| 49 | | Verify Switchgear Bus-Bar Rated Voltage (kV) and Frequency (Hz) |
| 50 | | Verify Switchgear Bus-Bar Rated Continuous Current (A) |
| 51 | | Verify Switchgear Bus-Bar Bus Bracing (kA SYM) |
| 52 | | Verify Switchgear Circuit Breaker identification No. |
| 53 | | Verify Switchgear Circuit Breaker Type of Breaker (ex. GCB, VCB and etc.) |
| 54 | | Verify Switchgear Circuit Breaker Rated Voltage (kV) |
| 55 | | Verify Switchgear Circuit Breaker Rated Continuous Current (A) |
| 56 | | Verify Switchgear Circuit Breaker Rated Short Circuit Current (kA) (MVA for MV) |
| 57 | | Verify Switchgear CT & PT Current or Voltage Ratio |
| 58 | | Verify Switchgear CT & PT Number of Instrument Transformer |
| 59 | | Verify Switchgear CT, PT Winding connection (Delta, Wye and etc.) |
| 60 | | Verify Switchgear Power Fuse Rated Voltage (kV) |
| 61 | | Verify Switchgear Power Fuse Rated Continuous Current (A) |
| 62 | | Verify Switchgear Disconnection Switch Rated Voltage (kV) |
| 63 | | Verify Switchgear Disconnection Switch Rated Continuous Current (A) |
| 64 | | Verify Switchgear Lightning Arrestor Rated Voltage (kV) |
| 65 | | Verify Switchgear Lightning Arrestor Rated Current (kA) |
| 66 | | Verify Switchgear Surge Capacitor Rated Voltage (kV) |
| 67 | | Verify Switchgear Surge Capacitor Capacitance (micro F) |
| 68 | | Verify single line diagrams with cable run, connection diagram and cable schedule for cable tagging consistency and cable information. |