Tweaking transformer presets

Title casing labels and adding the frequency field

data/presets/fields/devices.json

@@ -1,6 +1,6 @@
 {
     "key": "devices",
     "type": "number",
-    "label": "Number of devices",
+    "label": "Number of Devices",
     "placeholder": "2"
 }

data/presets/fields/frequency.json

@@ -0,0 +1,6 @@
+{
+    "key": "frequency",
+    "type": "number",
+    "label": "Operating Frequency",
+    "placeholder": "50"
+}

data/presets/fields/phases.json

@@ -1,6 +1,6 @@
 {
     "key": "phases",
     "type": "number",
-    "label": "Number of phases",
+    "label": "Number of Phases",
     "placeholder": "3"
 }

data/presets/fields/transformer.json

@@ -1,7 +1,7 @@
 {
     "key": "transformer",
     "type": "combo",
-    "label": "Type of transformer",
+    "label": "Type of Transformer",
     "strings": {
         "options": {
             "distribution": "Distribution",
@@ -9,7 +9,7 @@
             "converter": "Converter",
             "traction": "Traction",
             "auto": "Autotransformer",
-            "phase_angle_regulator": "Phase angle regulator",
+            "phase_angle_regulator": "Phase Angle Regulator",
             "auxiliary": "Auxiliarty",
             "yes": "Unknown"
         }

data/presets/fields/voltage/secondary.json

@@ -2,5 +2,5 @@
     "key": "voltage:secondary",
     "type": "number",
     "label": "Secondary Voltage",
-    "placeholder": "225000"
+    "placeholder": "400"
 }

data/presets/fields/voltage/tertiary.json

@@ -2,5 +2,5 @@
     "key": "voltage:tertiary",
     "type": "number",
     "label": "Tertiary Voltage",
-    "placeholder": "225000"
+    "placeholder": "20000"
 }

data/presets/fields/windings.json

@@ -1,6 +1,6 @@
 {
     "key": "windings",
     "type": "number",
-    "label": "Number of windings",
+    "label": "Number of Windings",
     "placeholder": "3"
 }

data/presets/fields/windings/configuration.json

@@ -1,13 +1,13 @@
 {
     "key": "windings:configuration",
     "type": "combo",
-    "label": "Windings configuration",
+    "label": "Windings Configuration",
     "strings": {
         "options": {
             "star": "Star",
             "delta": "Delta",
-            "open-delta": "Open delta",
-            "zigzag": "Zig zag",
+            "open-delta": "Open Delta",
+            "zigzag": "Zig Zag",
             "open": "Open",
             "scott": "Scott",
             "leblanc": "Leblanc"

data/presets/presets/power/transformer.json

@@ -4,6 +4,7 @@
         "transformer",
         "location",
         "phases",
+        "frequency",
         "voltage/primary",
         "voltage/secondary",
         "voltage/tertiary",