Subject to changes without notice !
Änderungen vorbehalten !
Annex to the EC Type-Examination Certificate
No. EU-BD 908 of 2016-03-18
Note:
The English text is a translation of the German original. In case of any discrepancy, the German version is valid only.
Page 1 of 2
1
Scope of application
1.1
Use as braking device – part of the the protection device against overspeed for the car mov-
ing in upwards direction – permissible brake force and tripping speed
1.1.1
Permissible brake force when the braking device acts on the
brake disk while the car is moving upward
6011 N
The brake force refers to a single brake on the brake disc diameter effectivley
1.1.2
Maximum tripping speed of the overspeed governor and maximum rated speed of the lift
The maximum tripping speed of the overspeed governor and the maximum rated speed of the lift
must be calculated on the basis of the brake disc maximum tripping speed (gliding speed) as out-
lined below taking into account the brake disk diameter effectively, traction sheave diameter and
car suspension.
v =
D
TS
x v
BS
D
BS
x i
v
= Tripping (rated) speed (m/s)
D
TS
= Diameter of the traction sheave from rope’s center to rope’s center (m)
D
BS
= Diameter of the brake disk effectively (m)
v
BS
= Gliding speed on the brake disk diameter effectively (m/s)
i
= Ratio of the car suspension
Maximum tripping speed on the brake disk diameter effectively
19.02 m/s
1.2
Use as braking element – part of the protection device against unintended car movement (act-
ing in up and down direction) – permissible brake force, tripping speed and characteristics
1.2.1
Nominal brake force and response times with relation to a brand-new brake element
Nominal
brake force*
[N]
Maximum response times**
[ms]
without / with overexcitation
t
10
t
50
t
90
6011
57 / 68
119 / 131
181 / 194
Interim values can be interpolated
Explanations:
* Nominal brake force:
Brake force assured for installation operation by the safety component manufacturer.
** Response times:
t
X
time difference between the drop of the braking power until establishing X% of
the nominal brake force, t
50
optionally calculated t
50
= (t
10
+ t
90
)/2 or value taken from
the examination recording
1.2.2
Assigned execution features
Type of powering / deactivation
continuous current / continuous current end
Brake control
single
Nominal air gap
0.35 mm
Damping elements
YES
Overexcitation
at double non-release voltage
Maximum tripping speed on the brake disc diameter effectively
19.02 m/s
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date:
07. May 2019
Version: 0.13a
Page: 42
